Fix decrypt by searching for secret key based on keyId not masterKeyId, new ApgService for RPC

40 files changed, 2160 insertions, 1268 deletions

diff --git a/org_apg/AndroidManifest.xml b/org_apg/AndroidManifest.xml
index 6194e39ca..27045c738 100644
--- a/org_apg/AndroidManifest.xml
+++ b/org_apg/AndroidManifest.xml
@@ -336,7 +336,21 @@
             android:label="@string/title_help" />
 
         <service android:name=".service.PassphraseCacheService" />
-        <service android:name=".service.ApgService" />
+        <service android:name=".service.ApgIntentService" />
+        <service
+            android:name=".service.ApgService"
+            android:enabled="true"
+            android:exported="true"
+            android:permission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS"
+            android:process=":remote" >
+            <intent-filter>
+                <action android:name="org.thialfihar.android.apg.service.IApgService" />
+            </intent-filter>
+
+            <meta-data
+                android:name="api_version"
+                android:value="3" />
+        </service>
 
         <provider
             android:name=".provider.ApgProvider"
@@ -344,31 +358,34 @@
             android:readPermission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS" />
 
         <!-- DEPRECATED: -->
-<!--         <provider -->
-<!--             android:name=".deprecated.DataProvider" -->
-<!--             android:authorities="org.thialfihar.android.apg.provider" -->
-<!--             android:readPermission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS" /> -->
+        <!-- <provider -->
+        <!-- android:name=".deprecated.DataProvider" -->
+        <!-- android:authorities="org.thialfihar.android.apg.provider" -->
+        <!-- android:readPermission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS" /> -->
+
 
         <!-- TODO: need to be moved into new service model -->
-<!--         <service -->
-<!--             android:name=".deprecated.ApgService2" -->
-<!--             android:enabled="true" -->
-<!--             android:exported="true" -->
-<!--             android:permission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS" -->
-<!--             android:process=":remote" > -->
-<!--             <intent-filter> -->
-<!--                 <action android:name="org.thialfihar.android.apg.service.IApgService2" /> -->
-<!--             </intent-filter> -->
-
-<!--             <meta-data -->
-<!--                 android:name="api_version" -->
-<!--                 android:value="2" /> -->
-<!--         </service> -->
-
-<!--         <provider -->
-<!--             android:name=".deprecated.ApgServiceBlobProvider" -->
-<!--             android:authorities="org.thialfihar.android.apg.provider.apgserviceblobprovider" -->
-<!--             android:permission="org.thialfihar.android.apg.permission.STORE_BLOBS" /> -->
+        <!-- <service -->
+        <!-- android:name=".deprecated.ApgService2" -->
+        <!-- android:enabled="true" -->
+        <!-- android:exported="true" -->
+        <!-- android:permission="org.thialfihar.android.apg.permission.READ_KEY_DETAILS" -->
+        <!-- android:process=":remote" > -->
+        <!-- <intent-filter> -->
+        <!-- <action android:name="org.thialfihar.android.apg.service.IApgService2" /> -->
+        <!-- </intent-filter> -->
+
+
+        <!-- <meta-data -->
+        <!-- android:name="api_version" -->
+        <!-- android:value="2" /> -->
+        <!-- </service> -->
+
+
+        <!-- <provider -->
+        <!-- android:name=".deprecated.ApgServiceBlobProvider" -->
+        <!-- android:authorities="org.thialfihar.android.apg.provider.apgserviceblobprovider" -->
+        <!-- android:permission="org.thialfihar.android.apg.permission.STORE_BLOBS" /> -->
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/org_apg/src/org/thialfihar/android/apg/Constants.java b/org_apg/src/org/thialfihar/android/apg/Constants.java
index c0ae2794e..97e70bbea 100644
--- a/org_apg/src/org/thialfihar/android/apg/Constants.java
+++ b/org_apg/src/org/thialfihar/android/apg/Constants.java
@@ -59,12 +59,4 @@ public final class Constants {
         public static final String KEY_SERVERS = "pool.sks-keyservers.net, subkeys.pgp.net, pgp.mit.edu";
     }
 
-    // TODO: rework!
-    public static final class extras {
-        public static final String PROGRESS = "progress";
-        public static final String PROGRESS_MAX = "max";
-        public static final String STATUS = "status";
-        public static final String MESSAGE = "message";
-        public static final String KEY_ID = "keyId";
-    }
 }
diff --git a/org_apg/src/org/thialfihar/android/apg/helper/PGPHelper.java b/org_apg/src/org/thialfihar/android/apg/helper/PGPHelper.java
index a5d5ced5e..91b0bfbc0 100644
--- a/org_apg/src/org/thialfihar/android/apg/helper/PGPHelper.java
+++ b/org_apg/src/org/thialfihar/android/apg/helper/PGPHelper.java
@@ -384,10 +384,10 @@ public class PGPHelper {
     }
 
     public static String getPubkeyAsArmoredString(Context context, long keyId) {
-        PGPPublicKey key = ProviderHelper.getPGPPublicKey(context, keyId);
+        PGPPublicKey key = ProviderHelper.getPGPPublicKeyByKeyId(context, keyId);
         // if it is no public key get it from your own keys...
         if (key == null) {
-            PGPSecretKey secretKey = ProviderHelper.getPGPSecretKey(context, keyId);
+            PGPSecretKey secretKey = ProviderHelper.getPGPSecretKeyByKeyId(context, keyId);
             if (secretKey == null) {
                 Log.e(Constants.TAG, "Key could not be found!");
                 return null;
@@ -415,10 +415,10 @@ public class PGPHelper {
     }
 
     public static String getFingerPrint(Context context, long keyId) {
-        PGPPublicKey key = ProviderHelper.getPGPPublicKey(context, keyId);
+        PGPPublicKey key = ProviderHelper.getPGPPublicKeyByKeyId(context, keyId);
         // if it is no public key get it from your own keys...
         if (key == null) {
-            PGPSecretKey secretKey = ProviderHelper.getPGPSecretKey(context, keyId);
+            PGPSecretKey secretKey = ProviderHelper.getPGPSecretKeyByKeyId(context, keyId);
             if (secretKey == null) {
                 Log.e(Constants.TAG, "Key could not be found!");
                 return null;
diff --git a/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java b/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java
index 902c996b8..adccaf038 100644
--- a/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java
+++ b/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java
@@ -73,7 +73,7 @@ import org.spongycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder;
 import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder;
 import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator;
 import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.util.HkpKeyServer;
 import org.thialfihar.android.apg.util.InputData;
 import org.thialfihar.android.apg.util.PositionAwareInputStream;
@@ -599,9 +599,9 @@ public class PGPMain {
             // nothing to do, we are done
         }
 
-        returnData.putInt(ApgService.RESULT_IMPORT_ADDED, newKeys);
-        returnData.putInt(ApgService.RESULT_IMPORT_UPDATED, oldKeys);
-        returnData.putInt(ApgService.RESULT_IMPORT_BAD, badKeys);
+        returnData.putInt(ApgIntentService.RESULT_IMPORT_ADDED, newKeys);
+        returnData.putInt(ApgIntentService.RESULT_IMPORT_UPDATED, oldKeys);
+        returnData.putInt(ApgIntentService.RESULT_IMPORT_BAD, badKeys);
 
         updateProgress(progress, R.string.progress_done, 100, 100);
 
@@ -646,83 +646,42 @@ public class PGPMain {
             ++numKeys;
         }
         out.close();
-        returnData.putInt(ApgService.RESULT_EXPORT, numKeys);
+        returnData.putInt(ApgIntentService.RESULT_EXPORT, numKeys);
 
         updateProgress(progress, R.string.progress_done, 100, 100);
 
         return returnData;
     }
 
-    // public static PGPKeyRing getKeyRing(int keyRingId) {
-    // return (PGPKeyRing) mDatabase.getKeyRing(keyRingId);
-    // }
-
-    // public static PGPSecretKeyRing getSecretKeyRing(long keyId) {
-    // byte[] data = mDatabase.getKeyRingDataFromKeyId(Id.database.type_secret, keyId);
-    // if (data == null) {
-    // return null;
-    // }
-    // return PGPConversionHelper.BytesToPGPSecretKeyRing(data);
-    // }
-    //
-    // public static PGPPublicKeyRing getPublicKeyRing(long keyId) {
-    // byte[] data = mDatabase.getKeyRingDataFromKeyId(Id.database.type_public, keyId);
-    // if (data == null) {
-    // return null;
-    // }
-    // return PGPConversionHelper.BytesToPGPPublicKeyRing(data);
-    // }
-
-    // public static Vector<Integer> getKeyRingIds(int type) {
-    // SQLiteDatabase db = mDatabase.db();
-    // Vector<Integer> keyIds = new Vector<Integer>();
-    // Cursor c = db.query(KeyRings.TABLE_NAME, new String[] { KeyRings._ID }, KeyRings.TYPE
-    // + " = ?", new String[] { "" + type }, null, null, null);
-    // if (c != null && c.moveToFirst()) {
-    // do {
-    // keyIds.add(c.getInt(0));
-    // } while (c.moveToNext());
-    // }
-    //
-    // if (c != null) {
-    // c.close();
-    // }
-    //
-    // return keyIds;
-    // }
-
-    // public static String getMainUserId(long keyId, int type) {
-    // SQLiteDatabase db = mDatabase.db();
-    // Cursor c = db.query(Keys.TABLE_NAME + " INNER JOIN " + KeyRings.TABLE_NAME + " ON ("
-    // + KeyRings.TABLE_NAME + "." + KeyRings._ID + " = " + Keys.TABLE_NAME + "."
-    // + Keys.KEY_RING_ID + ") " + " INNER JOIN " + Keys.TABLE_NAME + " AS masterKey ON ("
-    // + KeyRings.TABLE_NAME + "." + KeyRings._ID + " = " + "masterKey."
-    // + Keys.KEY_RING_ID + " AND " + "masterKey." + Keys.IS_MASTER_KEY + " = '1') "
-    // + " INNER JOIN " + UserIds.TABLE_NAME + " ON (" + UserIds.TABLE_NAME + "."
-    // + UserIds.KEY_ID + " = " + "masterKey." + Keys._ID + " AND " + UserIds.TABLE_NAME
-    // + "." + UserIds.RANK + " = '0')", new String[] { UserIds.USER_ID }, Keys.TABLE_NAME
-    // + "." + Keys.KEY_ID + " = ? AND " + KeyRings.TABLE_NAME + "." + KeyRings.TYPE
-    // + " = ?", new String[] { "" + keyId, "" + type, }, null, null, null);
-    // String userId = "";
-    // if (c != null && c.moveToFirst()) {
-    // do {
-    // userId = c.getString(0);
-    // } while (c.moveToNext());
-    // }
-    //
-    // if (c != null) {
-    // c.close();
-    // }
-    //
-    // return userId;
-    // }
-
-    public static void encrypt(Context context, InputData data, OutputStream outStream,
-            boolean armored, long encryptionKeyIds[], long signatureKeyId,
-            String signaturePassPhrase, ProgressDialogUpdater progress, int symmetricAlgorithm,
-            int hashAlgorithm, int compression, boolean forceV3Signature, String passPhrase)
-            throws IOException, ApgGeneralException, PGPException, NoSuchProviderException,
-            NoSuchAlgorithmException, SignatureException {
+    /**
+     * Encrypt and Sign data
+     * 
+     * @param context
+     * @param progress
+     * @param data
+     * @param outStream
+     * @param useAsciiArmor
+     * @param compression
+     * @param encryptionKeyIds
+     * @param symmetricEncryptionAlgorithm
+     * @param encryptionPassphrase
+     * @param signatureKeyId
+     * @param signatureHashAlgorithm
+     * @param signatureForceV3
+     * @param signaturePassphrase
+     * @throws IOException
+     * @throws ApgGeneralException
+     * @throws PGPException
+     * @throws NoSuchProviderException
+     * @throws NoSuchAlgorithmException
+     * @throws SignatureException
+     */
+    public static void encryptAndSign(Context context, ProgressDialogUpdater progress,
+            InputData data, OutputStream outStream, boolean useAsciiArmor, int compression,
+            long encryptionKeyIds[], String encryptionPassphrase, int symmetricEncryptionAlgorithm,
+            long signatureKeyId, int signatureHashAlgorithm, boolean signatureForceV3,
+            String signaturePassphrase) throws IOException, ApgGeneralException, PGPException,
+            NoSuchProviderException, NoSuchAlgorithmException, SignatureException {
 
         if (encryptionKeyIds == null) {
             encryptionKeyIds = new long[0];
@@ -731,7 +690,7 @@ public class PGPMain {
         ArmoredOutputStream armorOut = null;
         OutputStream out = null;
         OutputStream encryptOut = null;
-        if (armored) {
+        if (useAsciiArmor) {
             armorOut = new ArmoredOutputStream(outStream);
             armorOut.setHeader("Version", getFullVersion(context));
             out = armorOut;
@@ -742,27 +701,27 @@ public class PGPMain {
         PGPSecretKeyRing signingKeyRing = null;
         PGPPrivateKey signaturePrivateKey = null;
 
-        if (encryptionKeyIds.length == 0 && passPhrase == null) {
+        if (encryptionKeyIds.length == 0 && encryptionPassphrase == null) {
             throw new ApgGeneralException(
                     context.getString(R.string.error_noEncryptionKeysOrPassPhrase));
         }
 
         if (signatureKeyId != Id.key.none) {
-            signingKeyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId(context,
+            signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context,
                     signatureKeyId);
             signingKey = PGPHelper.getSigningKey(context, signatureKeyId);
             if (signingKey == null) {
                 throw new ApgGeneralException(context.getString(R.string.error_signatureFailed));
             }
 
-            if (signaturePassPhrase == null) {
+            if (signaturePassphrase == null) {
                 throw new ApgGeneralException(
                         context.getString(R.string.error_noSignaturePassPhrase));
             }
             if (progress != null)
                 progress.setProgress(R.string.progress_extractingSignatureKey, 0, 100);
             PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
-                    BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassPhrase.toCharArray());
+                    BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray());
             signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor);
             if (signaturePrivateKey == null) {
                 throw new ApgGeneralException(
@@ -773,26 +732,28 @@ public class PGPMain {
 
         // encrypt and compress input file content
         JcePGPDataEncryptorBuilder encryptorBuilder = new JcePGPDataEncryptorBuilder(
-                symmetricAlgorithm).setProvider(BOUNCY_CASTLE_PROVIDER_NAME)
+                symmetricEncryptionAlgorithm).setProvider(BOUNCY_CASTLE_PROVIDER_NAME)
                 .setWithIntegrityPacket(true);
 
         PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(encryptorBuilder);
 
         if (encryptionKeyIds.length == 0) {
-            // symmetric encryption
+            // Symmetric encryption
             Log.d(Constants.TAG, "encryptionKeyIds length is 0 -> symmetric encryption");
 
             JcePBEKeyEncryptionMethodGenerator symmetricEncryptionGenerator = new JcePBEKeyEncryptionMethodGenerator(
-                    passPhrase.toCharArray());
+                    encryptionPassphrase.toCharArray());
             cPk.addMethod(symmetricEncryptionGenerator);
-        }
-        for (int i = 0; i < encryptionKeyIds.length; ++i) {
-            PGPPublicKey key = PGPHelper.getEncryptPublicKey(context, encryptionKeyIds[i]);
-            if (key != null) {
-
-                JcePublicKeyKeyEncryptionMethodGenerator pubKeyEncryptionGenerator = new JcePublicKeyKeyEncryptionMethodGenerator(
-                        key);
-                cPk.addMethod(pubKeyEncryptionGenerator);
+        } else {
+            // Asymmetric encryption
+            for (int i = 0; i < encryptionKeyIds.length; ++i) {
+                PGPPublicKey key = PGPHelper.getEncryptPublicKey(context, encryptionKeyIds[i]);
+                if (key != null) {
+
+                    JcePublicKeyKeyEncryptionMethodGenerator pubKeyEncryptionGenerator = new JcePublicKeyKeyEncryptionMethodGenerator(
+                            key);
+                    cPk.addMethod(pubKeyEncryptionGenerator);
+                }
             }
         }
         encryptOut = cPk.open(out, new byte[1 << 16]);
@@ -806,10 +767,10 @@ public class PGPMain {
 
             // content signer based on signing key algorithm and choosen hash algorithm
             JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(
-                    signingKey.getPublicKey().getAlgorithm(), hashAlgorithm)
+                    signingKey.getPublicKey().getAlgorithm(), signatureHashAlgorithm)
                     .setProvider(BOUNCY_CASTLE_PROVIDER_NAME);
 
-            if (forceV3Signature) {
+            if (signatureForceV3) {
                 signatureV3Generator = new PGPV3SignatureGenerator(contentSignerBuilder);
                 signatureV3Generator.init(PGPSignature.BINARY_DOCUMENT, signaturePrivateKey);
             } else {
@@ -832,7 +793,7 @@ public class PGPMain {
             bcpgOut = new BCPGOutputStream(compressGen.open(encryptOut));
         }
         if (signatureKeyId != Id.key.none) {
-            if (forceV3Signature) {
+            if (signatureForceV3) {
                 signatureV3Generator.generateOnePassVersion(false).encode(bcpgOut);
             } else {
                 signatureGenerator.generateOnePassVersion(false).encode(bcpgOut);
@@ -852,7 +813,7 @@ public class PGPMain {
         while ((n = in.read(buffer)) > 0) {
             pOut.write(buffer, 0, n);
             if (signatureKeyId != Id.key.none) {
-                if (forceV3Signature) {
+                if (signatureForceV3) {
                     signatureV3Generator.update(buffer, 0, n);
                 } else {
                     signatureGenerator.update(buffer, 0, n);
@@ -868,7 +829,7 @@ public class PGPMain {
 
         if (signatureKeyId != Id.key.none) {
             updateProgress(progress, R.string.progress_generatingSignature, 95, 100);
-            if (forceV3Signature) {
+            if (signatureForceV3) {
                 signatureV3Generator.generate().encode(pOut);
             } else {
                 signatureGenerator.generate().encode(pOut);
@@ -878,16 +839,16 @@ public class PGPMain {
             compressGen.close();
         }
         encryptOut.close();
-        if (armored) {
+        if (useAsciiArmor) {
             armorOut.close();
         }
 
         updateProgress(progress, R.string.progress_done, 100, 100);
     }
 
-    public static void signText(Context context, InputData data, OutputStream outStream,
-            long signatureKeyId, String signaturePassPhrase, int hashAlgorithm,
-            boolean forceV3Signature, ProgressDialogUpdater progress) throws ApgGeneralException,
+    public static void signText(Context context, ProgressDialogUpdater progress, InputData data,
+            OutputStream outStream, long signatureKeyId, String signaturePassphrase,
+            int signatureHashAlgorithm, boolean forceV3Signature) throws ApgGeneralException,
             PGPException, IOException, NoSuchAlgorithmException, SignatureException {
 
         ArmoredOutputStream armorOut = new ArmoredOutputStream(outStream);
@@ -902,19 +863,19 @@ public class PGPMain {
             throw new ApgGeneralException(context.getString(R.string.error_noSignatureKey));
         }
 
-        signingKeyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId(context, signatureKeyId);
+        signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, signatureKeyId);
         signingKey = PGPHelper.getSigningKey(context, signatureKeyId);
         if (signingKey == null) {
             armorOut.close();
             throw new ApgGeneralException(context.getString(R.string.error_signatureFailed));
         }
 
-        if (signaturePassPhrase == null) {
+        if (signaturePassphrase == null) {
             armorOut.close();
             throw new ApgGeneralException(context.getString(R.string.error_noSignaturePassPhrase));
         }
         PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
-                BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassPhrase.toCharArray());
+                BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray());
         signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor);
         if (signaturePrivateKey == null) {
             armorOut.close();
@@ -930,7 +891,7 @@ public class PGPMain {
 
         // content signer based on signing key algorithm and choosen hash algorithm
         JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(signingKey
-                .getPublicKey().getAlgorithm(), hashAlgorithm)
+                .getPublicKey().getAlgorithm(), signatureHashAlgorithm)
                 .setProvider(BOUNCY_CASTLE_PROVIDER_NAME);
 
         if (forceV3Signature) {
@@ -948,7 +909,7 @@ public class PGPMain {
 
         updateProgress(progress, R.string.progress_signing, 40, 100);
 
-        armorOut.beginClearText(hashAlgorithm);
+        armorOut.beginClearText(signatureHashAlgorithm);
 
         InputStream inStream = data.getInputStream();
         final BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
@@ -992,11 +953,11 @@ public class PGPMain {
         updateProgress(progress, R.string.progress_done, 100, 100);
     }
 
-    public static void generateSignature(Context context, InputData data, OutputStream outStream,
-            boolean armored, boolean binary, long signatureKeyId, String signaturePassPhrase,
-            int hashAlgorithm, boolean forceV3Signature, ProgressDialogUpdater progress)
-            throws ApgGeneralException, PGPException, IOException, NoSuchAlgorithmException,
-            SignatureException {
+    public static void generateSignature(Context context, ProgressDialogUpdater progress,
+            InputData data, OutputStream outStream, boolean armored, boolean binary,
+            long signatureKeyId, String signaturePassPhrase, int hashAlgorithm,
+            boolean forceV3Signature) throws ApgGeneralException, PGPException, IOException,
+            NoSuchAlgorithmException, SignatureException {
 
         OutputStream out = null;
 
@@ -1018,7 +979,7 @@ public class PGPMain {
             throw new ApgGeneralException(context.getString(R.string.error_noSignatureKey));
         }
 
-        signingKeyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId(context, signatureKeyId);
+        signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, signatureKeyId);
         signingKey = PGPHelper.getSigningKey(context, signatureKeyId);
         if (signingKey == null) {
             throw new ApgGeneralException(context.getString(R.string.error_signatureFailed));
@@ -1118,7 +1079,7 @@ public class PGPMain {
         if (passphrase == null || passphrase.length() <= 0) {
             throw new ApgGeneralException("Unable to obtain passphrase");
         } else {
-            PGPPublicKeyRing pubring = ProviderHelper.getPGPPublicKeyRingByMasterKeyId(context,
+            PGPPublicKeyRing pubring = ProviderHelper.getPGPPublicKeyRingByKeyId(context,
                     pubKeyId);
 
             PGPSecretKey signingKey = PGPHelper.getSigningKey(context, masterKeyId);
@@ -1185,7 +1146,7 @@ public class PGPMain {
             if (obj instanceof PGPPublicKeyEncryptedData) {
                 gotAsymmetricEncryption = true;
                 PGPPublicKeyEncryptedData pbe = (PGPPublicKeyEncryptedData) obj;
-                secretKey = ProviderHelper.getPGPSecretKey(context, pbe.getKeyID());
+                secretKey = ProviderHelper.getPGPSecretKeyByKeyId(context, pbe.getKeyID());
                 if (secretKey != null) {
                     break;
                 }
@@ -1232,12 +1193,13 @@ public class PGPMain {
         return false;
     }
 
-    public static Bundle decrypt(Context context, InputData data, OutputStream outStream,
-            String passPhrase, ProgressDialogUpdater progress, boolean assumeSymmetric)
+    public static Bundle decryptAndVerify(Context context, ProgressDialogUpdater progress,
+            InputData data, OutputStream outStream, String passphrase, boolean assumeSymmetric)
             throws IOException, ApgGeneralException, PGPException, SignatureException {
-        if (passPhrase == null) {
-            passPhrase = "";
+        if (passphrase == null) {
+            passphrase = "";
         }
+        
         Bundle returnData = new Bundle();
         InputStream in = PGPUtil.getDecoderStream(data.getInputStream());
         PGPObjectFactory pgpF = new PGPObjectFactory(in);
@@ -1289,7 +1251,7 @@ public class PGPMain {
                     .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build();
             PBEDataDecryptorFactory decryptorFactory = new JcePBEDataDecryptorFactoryBuilder(
                     digestCalcProvider).setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(
-                    passPhrase.toCharArray());
+                    passphrase.toCharArray());
 
             clear = pbe.getDataStream(decryptorFactory);
 
@@ -1306,7 +1268,7 @@ public class PGPMain {
                 Object obj = it.next();
                 if (obj instanceof PGPPublicKeyEncryptedData) {
                     PGPPublicKeyEncryptedData encData = (PGPPublicKeyEncryptedData) obj;
-                    secretKey = ProviderHelper.getPGPSecretKey(context, encData.getKeyID());
+                    secretKey = ProviderHelper.getPGPSecretKeyByKeyId(context, encData.getKeyID());
                     if (secretKey != null) {
                         pbe = encData;
                         break;
@@ -1323,7 +1285,7 @@ public class PGPMain {
             PGPPrivateKey privateKey = null;
             try {
                 PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder()
-                        .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(passPhrase.toCharArray());
+                        .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(passphrase.toCharArray());
                 privateKey = secretKey.extractPrivateKey(keyDecryptor);
             } catch (PGPException e) {
                 throw new PGPException(context.getString(R.string.error_wrongPassPhrase));
@@ -1363,11 +1325,11 @@ public class PGPMain {
         if (dataChunk instanceof PGPOnePassSignatureList) {
             if (progress != null)
                 progress.setProgress(R.string.progress_processingSignature, currentProgress, 100);
-            returnData.putBoolean(ApgService.RESULT_SIGNATURE, true);
+            returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE, true);
             PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk;
             for (int i = 0; i < sigList.size(); ++i) {
                 signature = sigList.get(i);
-                signatureKey = ProviderHelper.getPGPPublicKey(context, signature.getKeyID());
+                signatureKey = ProviderHelper.getPGPPublicKeyByKeyId(context, signature.getKeyID());
                 if (signatureKeyId == 0) {
                     signatureKeyId = signature.getKeyID();
                 }
@@ -1377,17 +1339,17 @@ public class PGPMain {
                     signatureIndex = i;
                     signatureKeyId = signature.getKeyID();
                     String userId = null;
-                    PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByMasterKeyId(
+                    PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId(
                             context, signatureKeyId);
                     if (signKeyRing != null) {
                         userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signKeyRing));
                     }
-                    returnData.putString(ApgService.RESULT_SIGNATURE_USER_ID, userId);
+                    returnData.putString(ApgIntentService.RESULT_SIGNATURE_USER_ID, userId);
                     break;
                 }
             }
 
-            returnData.putLong(ApgService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
+            returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
 
             if (signature != null) {
                 JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider()
@@ -1395,7 +1357,7 @@ public class PGPMain {
 
                 signature.init(contentVerifierBuilderProvider, signatureKey);
             } else {
-                returnData.putBoolean(ApgService.RESULT_SIGNATURE_UNKNOWN, true);
+                returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN, true);
             }
 
             dataChunk = plainFact.nextObject();
@@ -1432,7 +1394,7 @@ public class PGPMain {
                     try {
                         signature.update(buffer, 0, n);
                     } catch (SignatureException e) {
-                        returnData.putBoolean(ApgService.RESULT_SIGNATURE_SUCCESS, false);
+                        returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS, false);
                         signature = null;
                     }
                 }
@@ -1454,9 +1416,9 @@ public class PGPMain {
                 PGPSignatureList signatureList = (PGPSignatureList) plainFact.nextObject();
                 PGPSignature messageSignature = signatureList.get(signatureIndex);
                 if (signature.verify(messageSignature)) {
-                    returnData.putBoolean(ApgService.RESULT_SIGNATURE_SUCCESS, true);
+                    returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS, true);
                 } else {
-                    returnData.putBoolean(ApgService.RESULT_SIGNATURE_SUCCESS, false);
+                    returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS, false);
                 }
             }
         }
@@ -1478,8 +1440,8 @@ public class PGPMain {
         return returnData;
     }
 
-    public static Bundle verifyText(Context context, InputData data, OutputStream outStream,
-            boolean lookupUnknownKey, ProgressDialogUpdater progress) throws IOException,
+    public static Bundle verifyText(Context context, ProgressDialogUpdater progress,
+            InputData data, OutputStream outStream, boolean lookupUnknownKey) throws IOException,
             ApgGeneralException, PGPException, SignatureException {
         Bundle returnData = new Bundle();
 
@@ -1509,7 +1471,7 @@ public class PGPMain {
         byte[] clearText = out.toByteArray();
         outStream.write(clearText);
 
-        returnData.putBoolean(ApgService.RESULT_SIGNATURE, true);
+        returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE, true);
 
         updateProgress(progress, R.string.progress_processingSignature, 60, 100);
         PGPObjectFactory pgpFact = new PGPObjectFactory(aIn);
@@ -1523,7 +1485,7 @@ public class PGPMain {
         PGPPublicKey signatureKey = null;
         for (int i = 0; i < sigList.size(); ++i) {
             signature = sigList.get(i);
-            signatureKey = ProviderHelper.getPGPPublicKey(context, signature.getKeyID());
+            signatureKey = ProviderHelper.getPGPPublicKeyByKeyId(context, signature.getKeyID());
             if (signatureKeyId == 0) {
                 signatureKeyId = signature.getKeyID();
             }
@@ -1531,8 +1493,8 @@ public class PGPMain {
             if (signatureKey == null && lookupUnknownKey) {
 
                 returnData = new Bundle();
-                returnData.putLong(ApgService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
-                returnData.putBoolean(ApgService.RESULT_SIGNATURE_LOOKUP_KEY, true);
+                returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
+                returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_LOOKUP_KEY, true);
 
                 // return directly now, decrypt will be done again after importing unknown key
                 return returnData;
@@ -1543,20 +1505,20 @@ public class PGPMain {
             } else {
                 signatureKeyId = signature.getKeyID();
                 String userId = null;
-                PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByMasterKeyId(
+                PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId(
                         context, signatureKeyId);
                 if (signKeyRing != null) {
                     userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signKeyRing));
                 }
-                returnData.putString(ApgService.RESULT_SIGNATURE_USER_ID, userId);
+                returnData.putString(ApgIntentService.RESULT_SIGNATURE_USER_ID, userId);
                 break;
             }
         }
 
-        returnData.putLong(ApgService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
+        returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId);
 
         if (signature == null) {
-            returnData.putBoolean(ApgService.RESULT_SIGNATURE_UNKNOWN, true);
+            returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN, true);
             if (progress != null)
                 progress.setProgress(R.string.progress_done, 100, 100);
             return returnData;
@@ -1584,7 +1546,7 @@ public class PGPMain {
             } while (lookAhead != -1);
         }
 
-        returnData.putBoolean(ApgService.RESULT_SIGNATURE_SUCCESS, signature.verify());
+        returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS, signature.verify());
 
         updateProgress(progress, R.string.progress_done, 100, 100);
         return returnData;
@@ -1822,7 +1784,7 @@ public class PGPMain {
         return size;
     }
 
-    public static void deleteFileSecurely(Context context, File file, ProgressDialogUpdater progress)
+    public static void deleteFileSecurely(Context context, ProgressDialogUpdater progress, File file)
             throws FileNotFoundException, IOException {
         long length = file.length();
         SecureRandom random = new SecureRandom();
diff --git a/org_apg/src/org/thialfihar/android/apg/provider/ApgProvider.java b/org_apg/src/org/thialfihar/android/apg/provider/ApgProvider.java
index 5d2ef6506..ad0bd4a41 100644
--- a/org_apg/src/org/thialfihar/android/apg/provider/ApgProvider.java
+++ b/org_apg/src/org/thialfihar/android/apg/provider/ApgProvider.java
@@ -286,17 +286,21 @@ public class ApgProvider extends ContentProvider {
     }
 
     private SQLiteQueryBuilder buildKeyRingQuery(SQLiteQueryBuilder qb,
-            HashMap<String, String> projectionMap, int match, String sortOrder) {
+            HashMap<String, String> projectionMap, int match, boolean isMasterKey, String sortOrder) {
         qb.appendWhere(Tables.KEY_RINGS + "." + KeyRingsColumns.TYPE + " = ");
         qb.appendWhereEscapeString(Integer.toString(getKeyType(match)));
 
+        String isMasterKeyQuery = "";
+        if (isMasterKey) {
+            isMasterKeyQuery = " AND " + Tables.KEYS + "." + KeysColumns.IS_MASTER_KEY + " = '1'";
+        }
+
         qb.setTables(Tables.KEY_RINGS + " INNER JOIN " + Tables.KEYS + " ON " + "("
                 + Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + Tables.KEYS + "."
-                + KeysColumns.KEY_RING_ROW_ID + " AND " + Tables.KEYS + "."
-                + KeysColumns.IS_MASTER_KEY + " = '1'" + ") " + " INNER JOIN " + Tables.USER_IDS
-                + " ON " + "(" + Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + Tables.USER_IDS
-                + "." + UserIdsColumns.KEY_RING_ROW_ID + " AND " + Tables.USER_IDS + "."
-                + UserIdsColumns.RANK + " = '0')");
+                + KeysColumns.KEY_RING_ROW_ID + isMasterKeyQuery + ") " + " INNER JOIN "
+                + Tables.USER_IDS + " ON " + "(" + Tables.KEY_RINGS + "." + BaseColumns._ID + " = "
+                + Tables.USER_IDS + "." + UserIdsColumns.KEY_RING_ROW_ID + " AND "
+                + Tables.USER_IDS + "." + UserIdsColumns.RANK + " = '0')");
 
         projectionMap.put(BaseColumns._ID, Tables.KEY_RINGS + "." + BaseColumns._ID);
         projectionMap.put(KeyRingsColumns.MASTER_KEY_ID, Tables.KEY_RINGS + "."
@@ -326,7 +330,7 @@ public class ApgProvider extends ContentProvider {
         switch (match) {
         case PUBLIC_KEY_RING:
         case SECRET_KEY_RING:
-            qb = buildKeyRingQuery(qb, projectionMap, match, sortOrder);
+            qb = buildKeyRingQuery(qb, projectionMap, match, true, sortOrder);
 
             if (TextUtils.isEmpty(sortOrder)) {
                 sortOrder = Tables.USER_IDS + "." + UserIdsColumns.USER_ID + " ASC";
@@ -336,7 +340,7 @@ public class ApgProvider extends ContentProvider {
 
         case PUBLIC_KEY_RING_BY_ROW_ID:
         case SECRET_KEY_RING_BY_ROW_ID:
-            qb = buildKeyRingQuery(qb, projectionMap, match, sortOrder);
+            qb = buildKeyRingQuery(qb, projectionMap, match, true, sortOrder);
 
             qb.appendWhere(" AND " + Tables.KEY_RINGS + "." + BaseColumns._ID + " = ");
             qb.appendWhereEscapeString(uri.getLastPathSegment());
@@ -349,7 +353,7 @@ public class ApgProvider extends ContentProvider {
 
         case PUBLIC_KEY_RING_BY_MASTER_KEY_ID:
         case SECRET_KEY_RING_BY_MASTER_KEY_ID:
-            qb = buildKeyRingQuery(qb, projectionMap, match, sortOrder);
+            qb = buildKeyRingQuery(qb, projectionMap, match, true, sortOrder);
 
             qb.appendWhere(" AND " + Tables.KEY_RINGS + "." + KeyRingsColumns.MASTER_KEY_ID + " = ");
             qb.appendWhereEscapeString(uri.getLastPathSegment());
@@ -362,9 +366,9 @@ public class ApgProvider extends ContentProvider {
 
         case SECRET_KEY_RING_BY_KEY_ID:
         case PUBLIC_KEY_RING_BY_KEY_ID:
-            qb = buildKeyRingQuery(qb, projectionMap, match, sortOrder);
+            qb = buildKeyRingQuery(qb, projectionMap, match, false, sortOrder);
 
-            qb.appendWhere(" AND " + Tables.KEYS + KeysColumns.KEY_ID + " = ");
+            qb.appendWhere(" AND " + Tables.KEYS + "." + KeysColumns.KEY_ID + " = ");
             qb.appendWhereEscapeString(uri.getLastPathSegment());
 
             if (TextUtils.isEmpty(sortOrder)) {
diff --git a/org_apg/src/org/thialfihar/android/apg/provider/ProviderHelper.java b/org_apg/src/org/thialfihar/android/apg/provider/ProviderHelper.java
index 1b4ddad8a..ae4b1520c 100644
--- a/org_apg/src/org/thialfihar/android/apg/provider/ProviderHelper.java
+++ b/org_apg/src/org/thialfihar/android/apg/provider/ProviderHelper.java
@@ -59,8 +59,19 @@ public class ProviderHelper {
     }
 
     /**
-     * Retrieves the actual PGPPublicKeyRing object from the database blob associated with the
-     * maserKeyId
+     * Retrieves the actual PGPPublicKeyRing object from the database blob based on the rowId
+     * 
+     * @param context
+     * @param rowId
+     * @return
+     */
+    public static PGPPublicKeyRing getPGPPublicKeyRingByRowId(Context context, long rowId) {
+        Uri queryUri = KeyRings.buildPublicKeyRingsUri(Long.toString(rowId));
+        return (PGPPublicKeyRing) getPGPKeyRing(context, queryUri);
+    }
+
+    /**
+     * Retrieves the actual PGPPublicKeyRing object from the database blob based on the maserKeyId
      * 
      * @param context
      * @param masterKeyId
@@ -72,14 +83,50 @@ public class ProviderHelper {
         return (PGPPublicKeyRing) getPGPKeyRing(context, queryUri);
     }
 
-    public static PGPPublicKeyRing getPGPPublicKeyRing(Context context, long rowId) {
-        Uri queryUri = KeyRings.buildPublicKeyRingsUri(Long.toString(rowId));
+    /**
+     * Retrieves the actual PGPPublicKeyRing object from the database blob associated with a key
+     * with this keyId
+     * 
+     * @param context
+     * @param keyId
+     * @return
+     */
+    public static PGPPublicKeyRing getPGPPublicKeyRingByKeyId(Context context, long keyId) {
+        Uri queryUri = KeyRings.buildPublicKeyRingsByKeyIdUri(Long.toString(keyId));
         return (PGPPublicKeyRing) getPGPKeyRing(context, queryUri);
     }
 
     /**
-     * Retrieves the actual PGPSecretKeyRing object from the database blob associated with the
-     * maserKeyId
+     * Retrieves the actual PGPPublicKey object from the database blob associated with a key with
+     * this keyId
+     * 
+     * @param context
+     * @param keyId
+     * @return
+     */
+    public static PGPPublicKey getPGPPublicKeyByKeyId(Context context, long keyId) {
+        PGPPublicKeyRing keyRing = getPGPPublicKeyRingByKeyId(context, keyId);
+        if (keyRing == null) {
+            return null;
+        }
+
+        return keyRing.getPublicKey(keyId);
+    }
+
+    /**
+     * Retrieves the actual PGPSecretKeyRing object from the database blob based on the rowId
+     * 
+     * @param context
+     * @param rowId
+     * @return
+     */
+    public static PGPSecretKeyRing getPGPSecretKeyRingByRowId(Context context, long rowId) {
+        Uri queryUri = KeyRings.buildSecretKeyRingsUri(Long.toString(rowId));
+        return (PGPSecretKeyRing) getPGPKeyRing(context, queryUri);
+    }
+
+    /**
+     * Retrieves the actual PGPSecretKeyRing object from the database blob based on the maserKeyId
      * 
      * @param context
      * @param masterKeyId
@@ -91,26 +138,34 @@ public class ProviderHelper {
         return (PGPSecretKeyRing) getPGPKeyRing(context, queryUri);
     }
 
-    public static PGPSecretKeyRing getPGPSecretKeyRing(Context context, long rowId) {
-        Uri queryUri = KeyRings.buildSecretKeyRingsUri(Long.toString(rowId));
+    /**
+     * Retrieves the actual PGPSecretKeyRing object from the database blob associated with a key
+     * with this keyId
+     * 
+     * @param context
+     * @param keyId
+     * @return
+     */
+    public static PGPSecretKeyRing getPGPSecretKeyRingByKeyId(Context context, long keyId) {
+        Uri queryUri = KeyRings.buildSecretKeyRingsByKeyIdUri(Long.toString(keyId));
         return (PGPSecretKeyRing) getPGPKeyRing(context, queryUri);
     }
 
-    public static PGPSecretKey getPGPSecretKey(Context context, long keyId) {
-        PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId(context, keyId);
-        if (keyRing == null) {
-            return null;
-        }
-        return keyRing.getSecretKey(keyId);
-    }
-
-    public static PGPPublicKey getPGPPublicKey(Context context, long keyId) {
-        PGPPublicKeyRing keyRing = ProviderHelper.getPGPPublicKeyRingByMasterKeyId(context, keyId);
+    /**
+     * Retrieves the actual PGPSecretKey object from the database blob associated with a key with
+     * this keyId
+     * 
+     * @param context
+     * @param keyId
+     * @return
+     */
+    public static PGPSecretKey getPGPSecretKeyByKeyId(Context context, long keyId) {
+        PGPSecretKeyRing keyRing = getPGPSecretKeyRingByKeyId(context, keyId);
         if (keyRing == null) {
             return null;
         }
 
-        return keyRing.getPublicKey(keyId);
+        return keyRing.getSecretKey(keyId);
     }
 
     /**
diff --git a/org_apg/src/org/thialfihar/android/apg/service/ApgIntentService.java b/org_apg/src/org/thialfihar/android/apg/service/ApgIntentService.java
new file mode 100644
index 000000000..e3290ae65
--- /dev/null
+++ b/org_apg/src/org/thialfihar/android/apg/service/ApgIntentService.java
@@ -0,0 +1,881 @@
+/*
+ * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.thialfihar.android.apg.service;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Vector;
+
+import org.spongycastle.openpgp.PGPPublicKeyRing;
+import org.spongycastle.openpgp.PGPSecretKey;
+import org.spongycastle.openpgp.PGPSecretKeyRing;
+import org.thialfihar.android.apg.Constants;
+import org.thialfihar.android.apg.Id;
+import org.thialfihar.android.apg.R;
+import org.thialfihar.android.apg.helper.FileHelper;
+import org.thialfihar.android.apg.helper.OtherHelper;
+import org.thialfihar.android.apg.helper.PGPMain;
+import org.thialfihar.android.apg.helper.Preferences;
+import org.thialfihar.android.apg.helper.PGPMain.ApgGeneralException;
+import org.thialfihar.android.apg.helper.PGPConversionHelper;
+import org.thialfihar.android.apg.provider.ApgContract.DataStream;
+import org.thialfihar.android.apg.provider.ProviderHelper;
+import org.thialfihar.android.apg.util.HkpKeyServer;
+import org.thialfihar.android.apg.util.InputData;
+import org.thialfihar.android.apg.util.KeyServer.KeyInfo;
+import org.thialfihar.android.apg.util.ProgressDialogUpdater;
+
+import android.app.IntentService;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+
+import org.thialfihar.android.apg.util.Log;
+
+/**
+ * This Service contains all important long lasting operations for APG. It receives Intents with
+ * data from the activities or other apps, queues these intents, executes them, and stops itself
+ * after doing them.
+ */
+public class ApgIntentService extends IntentService implements ProgressDialogUpdater {
+
+    /* extras that can be given by intent */
+    public static final String EXTRA_MESSENGER = "messenger";
+    public static final String EXTRA_ACTION = "action";
+    public static final String EXTRA_DATA = "data";
+
+    /* possible EXTRA_ACTIONs */
+    public static final int ACTION_ENCRYPT_SIGN = 10;
+
+    public static final int ACTION_DECRYPT_VERIFY = 20;
+
+    public static final int ACTION_SAVE_KEYRING = 30;
+    public static final int ACTION_GENERATE_KEY = 31;
+    public static final int ACTION_GENERATE_DEFAULT_RSA_KEYS = 32;
+
+    public static final int ACTION_DELETE_FILE_SECURELY = 40;
+
+    public static final int ACTION_IMPORT_KEY = 50;
+    public static final int ACTION_EXPORT_KEY = 51;
+
+    public static final int ACTION_UPLOAD_KEY = 60;
+    public static final int ACTION_QUERY_KEY = 61;
+
+    public static final int ACTION_SIGN_KEY = 70;
+
+    /* keys for data bundle */
+
+    // encrypt, decrypt, import export
+    public static final String TARGET = "target";
+    // possible targets:
+    public static final int TARGET_BYTES = 1;
+    public static final int TARGET_FILE = 2;
+    public static final int TARGET_STREAM = 3;
+
+    // encrypt
+    public static final String SECRET_KEY_ID = "secretKeyId";
+    public static final String USE_ASCII_AMOR = "useAsciiAmor";
+    public static final String ENCRYPTION_KEYS_IDS = "encryptionKeysIds";
+    public static final String COMPRESSION_ID = "compressionId";
+    public static final String GENERATE_SIGNATURE = "generateSignature";
+    public static final String SIGN_ONLY = "signOnly";
+    public static final String MESSAGE_BYTES = "messageBytes";
+    public static final String INPUT_FILE = "inputFile";
+    public static final String OUTPUT_FILE = "outputFile";
+    public static final String PROVIDER_URI = "providerUri";
+
+    // decrypt/verify
+    public static final String SIGNED_ONLY = "signedOnly";
+    public static final String RETURN_BYTES = "returnBinary";
+    public static final String CIPHERTEXT_BYTES = "ciphertextBytes";
+    public static final String ASSUME_SYMMETRIC = "assumeSymmetric";
+    public static final String LOOKUP_UNKNOWN_KEY = "lookupUnknownKey";
+
+    // edit keys
+    public static final String NEW_PASSPHRASE = "newPassphrase";
+    public static final String CURRENT_PASSPHRASE = "currentPassphrase";
+    public static final String USER_IDS = "userIds";
+    public static final String KEYS = "keys";
+    public static final String KEYS_USAGES = "keysUsages";
+    public static final String MASTER_KEY_ID = "masterKeyId";
+
+    // generate key
+    public static final String ALGORITHM = "algorithm";
+    public static final String KEY_SIZE = "keySize";
+    public static final String SYMMETRIC_PASSPHRASE = "passphrase";
+    public static final String MASTER_KEY = "masterKey";
+
+    // delete file securely
+    public static final String DELETE_FILE = "deleteFile";
+
+    // import key
+    public static final String IMPORT_INPUT_STREAM = "importInputStream";
+    public static final String IMPORT_FILENAME = "importFilename";
+    public static final String IMPORT_BYTES = "importBytes";
+    public static final String IMPORT_KEY_TYPE = "importKeyType";
+
+    // export key
+    public static final String EXPORT_OUTPUT_STREAM = "exportOutputStream";
+    public static final String EXPORT_FILENAME = "exportFilename";
+    public static final String EXPORT_KEY_TYPE = "exportKeyType";
+    public static final String EXPORT_ALL = "exportAll";
+    public static final String EXPORT_KEY_RING_ID = "exportKeyRingId";
+
+    // upload key
+    public static final String UPLOAD_KEY_SERVER = "uploadKeyServer";
+    public static final String UPLOAD_KEY_KEYRING_ROW_ID = "uploadKeyRingId";
+
+    // query key
+    public static final String QUERY_KEY_SERVER = "queryKeyServer";
+    public static final String QUERY_KEY_TYPE = "queryKeyType";
+    public static final String QUERY_KEY_STRING = "queryKeyString";
+    public static final String QUERY_KEY_ID = "queryKeyId";
+
+    // sign key
+    public static final String SIGN_KEY_MASTER_KEY_ID = "signKeyMasterKeyId";
+    public static final String SIGN_KEY_PUB_KEY_ID = "signKeyPubKeyId";
+
+    /*
+     * possible data keys as result send over messenger
+     */
+    // keys
+    public static final String RESULT_NEW_KEY = "newKey";
+    public static final String RESULT_NEW_KEY2 = "newKey2";
+
+    // encrypt
+    public static final String RESULT_SIGNATURE_BYTES = "signatureData";
+    public static final String RESULT_SIGNATURE_STRING = "signatureText";
+    public static final String RESULT_ENCRYPTED_STRING = "encryptedMessage";
+    public static final String RESULT_ENCRYPTED_BYTES = "encryptedData";
+    public static final String RESULT_URI = "resultUri";
+
+    // decrypt/verify
+    public static final String RESULT_DECRYPTED_STRING = "decryptedMessage";
+    public static final String RESULT_DECRYPTED_BYTES = "decryptedData";
+    public static final String RESULT_SIGNATURE = "signature";
+    public static final String RESULT_SIGNATURE_KEY_ID = "signatureKeyId";
+    public static final String RESULT_SIGNATURE_USER_ID = "signatureUserId";
+
+    public static final String RESULT_SIGNATURE_SUCCESS = "signatureSuccess";
+    public static final String RESULT_SIGNATURE_UNKNOWN = "signatureUnknown";
+    public static final String RESULT_SIGNATURE_LOOKUP_KEY = "lookupKey";
+
+    // import
+    public static final String RESULT_IMPORT_ADDED = "added";
+    public static final String RESULT_IMPORT_UPDATED = "updated";
+    public static final String RESULT_IMPORT_BAD = "bad";
+
+    // export
+    public static final String RESULT_EXPORT = "exported";
+
+    // query
+    public static final String RESULT_QUERY_KEY_KEY_DATA = "queryKeyKeyData";
+    public static final String RESULT_QUERY_KEY_SEARCH_RESULT = "queryKeySearchResult";
+
+    Messenger mMessenger;
+
+    public ApgIntentService() {
+        super("ApgService");
+    }
+
+    /**
+     * The IntentService calls this method from the default worker thread with the intent that
+     * started the service. When this method returns, IntentService stops the service, as
+     * appropriate.
+     */
+    @Override
+    protected void onHandleIntent(Intent intent) {
+        Bundle extras = intent.getExtras();
+        if (extras == null) {
+            Log.e(Constants.TAG, "Extras bundle is null!");
+            return;
+        }
+
+        if (!(extras.containsKey(EXTRA_MESSENGER) || extras.containsKey(EXTRA_DATA) || extras
+                .containsKey(EXTRA_ACTION))) {
+            Log.e(Constants.TAG,
+                    "Extra bundle must contain a messenger, a data bundle, and an action!");
+            return;
+        }
+
+        mMessenger = (Messenger) extras.get(EXTRA_MESSENGER);
+        Bundle data = extras.getBundle(EXTRA_DATA);
+
+        OtherHelper.logDebugBundle(data, "EXTRA_DATA");
+
+        int action = extras.getInt(EXTRA_ACTION);
+
+        // execute action from extra bundle
+        switch (action) {
+        case ACTION_ENCRYPT_SIGN:
+
+            try {
+                /* Input */
+                int target = data.getInt(TARGET);
+
+                long secretKeyId = data.getLong(SECRET_KEY_ID);
+                String encryptionPassphrase = data.getString(SYMMETRIC_PASSPHRASE);
+
+                boolean useAsciiArmor = data.getBoolean(USE_ASCII_AMOR);
+                long encryptionKeyIds[] = data.getLongArray(ENCRYPTION_KEYS_IDS);
+                int compressionId = data.getInt(COMPRESSION_ID);
+                boolean generateSignature = data.getBoolean(GENERATE_SIGNATURE);
+                boolean signOnly = data.getBoolean(SIGN_ONLY);
+
+                InputStream inStream = null;
+                long inLength = -1;
+                InputData inputData = null;
+                OutputStream outStream = null;
+                String streamFilename = null;
+                switch (target) {
+                case TARGET_BYTES: /* encrypting bytes directly */
+                    byte[] bytes = data.getByteArray(MESSAGE_BYTES);
+
+                    inStream = new ByteArrayInputStream(bytes);
+                    inLength = bytes.length;
+
+                    inputData = new InputData(inStream, inLength);
+                    outStream = new ByteArrayOutputStream();
+
+                    break;
+                case TARGET_FILE: /* encrypting file */
+                    String inputFile = data.getString(INPUT_FILE);
+                    String outputFile = data.getString(OUTPUT_FILE);
+
+                    // check if storage is ready
+                    if (!FileHelper.isStorageMounted(inputFile)
+                            || !FileHelper.isStorageMounted(outputFile)) {
+                        throw new ApgGeneralException(
+                                getString(R.string.error_externalStorageNotReady));
+                    }
+
+                    inStream = new FileInputStream(inputFile);
+                    File file = new File(inputFile);
+                    inLength = file.length();
+                    inputData = new InputData(inStream, inLength);
+
+                    outStream = new FileOutputStream(outputFile);
+
+                    break;
+
+                case TARGET_STREAM: /* Encrypting stream from content uri */
+                    Uri providerUri = (Uri) data.getParcelable(PROVIDER_URI);
+
+                    // InputStream
+                    InputStream in = getContentResolver().openInputStream(providerUri);
+                    inLength = PGPMain.getLengthOfStream(in);
+                    inputData = new InputData(in, inLength);
+
+                    // OutputStream
+                    try {
+                        while (true) {
+                            streamFilename = PGPMain.generateRandomString(32);
+                            if (streamFilename == null) {
+                                throw new PGPMain.ApgGeneralException(
+                                        "couldn't generate random file name");
+                            }
+                            openFileInput(streamFilename).close();
+                        }
+                    } catch (FileNotFoundException e) {
+                        // found a name that isn't used yet
+                    }
+                    outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
+
+                    break;
+
+                default:
+                    throw new PGPMain.ApgGeneralException("No target choosen!");
+
+                }
+
+                /* Operation */
+
+                if (generateSignature) {
+                    Log.d(Constants.TAG, "generating signature...");
+                    PGPMain.generateSignature(this, this, inputData, outStream, useAsciiArmor,
+                            false, secretKeyId, PassphraseCacheService.getCachedPassphrase(this,
+                                    secretKeyId), Preferences.getPreferences(this)
+                                    .getDefaultHashAlgorithm(), Preferences.getPreferences(this)
+                                    .getForceV3Signatures());
+                } else if (signOnly) {
+                    Log.d(Constants.TAG, "sign only...");
+                    PGPMain.signText(this, this, inputData, outStream, secretKeyId,
+                            PassphraseCacheService.getCachedPassphrase(this, secretKeyId),
+                            Preferences.getPreferences(this).getDefaultHashAlgorithm(), Preferences
+                                    .getPreferences(this).getForceV3Signatures());
+                } else {
+                    Log.d(Constants.TAG, "encrypt...");
+                    PGPMain.encryptAndSign(this, this, inputData, outStream, useAsciiArmor,
+                            compressionId, encryptionKeyIds, encryptionPassphrase, Preferences
+                                    .getPreferences(this).getDefaultEncryptionAlgorithm(),
+                            secretKeyId,
+                            Preferences.getPreferences(this).getDefaultHashAlgorithm(), Preferences
+                                    .getPreferences(this).getForceV3Signatures(),
+                            PassphraseCacheService.getCachedPassphrase(this, secretKeyId));
+                }
+
+                outStream.close();
+
+                /* Output */
+
+                Bundle resultData = new Bundle();
+
+                switch (target) {
+                case TARGET_BYTES:
+                    if (useAsciiArmor) {
+                        String output = new String(
+                                ((ByteArrayOutputStream) outStream).toByteArray());
+                        if (generateSignature) {
+                            resultData.putString(RESULT_SIGNATURE_STRING, output);
+                        } else {
+                            resultData.putString(RESULT_ENCRYPTED_STRING, output);
+                        }
+                    } else {
+                        byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
+                        if (generateSignature) {
+                            resultData.putByteArray(RESULT_SIGNATURE_BYTES, output);
+                        } else {
+                            resultData.putByteArray(RESULT_ENCRYPTED_BYTES, output);
+                        }
+                    }
+
+                    break;
+                case TARGET_FILE:
+                    // nothing, file was written, just send okay
+
+                    break;
+                case TARGET_STREAM:
+                    String uri = DataStream.buildDataStreamUri(streamFilename).toString();
+                    resultData.putString(RESULT_URI, uri);
+
+                    break;
+                }
+
+                OtherHelper.logDebugBundle(resultData, "resultData");
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_DECRYPT_VERIFY:
+            try {
+                /* Input */
+                int target = data.getInt(TARGET);
+
+                long secretKeyId = data.getLong(SECRET_KEY_ID);
+                byte[] bytes = data.getByteArray(CIPHERTEXT_BYTES);
+                boolean signedOnly = data.getBoolean(SIGNED_ONLY);
+                boolean returnBytes = data.getBoolean(RETURN_BYTES);
+                boolean assumeSymmetricEncryption = data.getBoolean(ASSUME_SYMMETRIC);
+
+                boolean lookupUnknownKey = data.getBoolean(LOOKUP_UNKNOWN_KEY);
+
+                InputStream inStream = null;
+                long inLength = -1;
+                InputData inputData = null;
+                OutputStream outStream = null;
+                String streamFilename = null;
+                switch (target) {
+                case TARGET_BYTES: /* decrypting bytes directly */
+                    inStream = new ByteArrayInputStream(bytes);
+                    inLength = bytes.length;
+
+                    inputData = new InputData(inStream, inLength);
+                    outStream = new ByteArrayOutputStream();
+
+                    break;
+
+                case TARGET_FILE: /* decrypting file */
+                    String inputFile = data.getString(INPUT_FILE);
+                    String outputFile = data.getString(OUTPUT_FILE);
+
+                    // check if storage is ready
+                    if (!FileHelper.isStorageMounted(inputFile)
+                            || !FileHelper.isStorageMounted(outputFile)) {
+                        throw new ApgGeneralException(
+                                getString(R.string.error_externalStorageNotReady));
+                    }
+
+                    // InputStream
+                    inLength = -1;
+                    inStream = new FileInputStream(inputFile);
+                    File file = new File(inputFile);
+                    inLength = file.length();
+                    inputData = new InputData(inStream, inLength);
+
+                    // OutputStream
+                    outStream = new FileOutputStream(outputFile);
+
+                    break;
+
+                case TARGET_STREAM: /* decrypting stream from content uri */
+                    Uri providerUri = (Uri) data.getParcelable(PROVIDER_URI);
+
+                    // InputStream
+                    InputStream in = getContentResolver().openInputStream(providerUri);
+                    inLength = PGPMain.getLengthOfStream(in);
+                    inputData = new InputData(in, inLength);
+
+                    // OutputStream
+                    try {
+                        while (true) {
+                            streamFilename = PGPMain.generateRandomString(32);
+                            if (streamFilename == null) {
+                                throw new PGPMain.ApgGeneralException(
+                                        "couldn't generate random file name");
+                            }
+                            openFileInput(streamFilename).close();
+                        }
+                    } catch (FileNotFoundException e) {
+                        // found a name that isn't used yet
+                    }
+                    outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
+
+                    break;
+
+                default:
+                    throw new PGPMain.ApgGeneralException("No target choosen!");
+
+                }
+
+                /* Operation */
+
+                Bundle resultData = new Bundle();
+
+                // verifyText and decrypt returning additional resultData values for the
+                // verification of signatures
+                if (signedOnly) {
+                    resultData = PGPMain.verifyText(this, this, inputData, outStream,
+                            lookupUnknownKey);
+                } else {
+                    resultData = PGPMain.decryptAndVerify(this, this, inputData, outStream,
+                            PassphraseCacheService.getCachedPassphrase(this, secretKeyId),
+                            assumeSymmetricEncryption);
+                }
+
+                outStream.close();
+
+                /* Output */
+
+                switch (target) {
+                case TARGET_BYTES:
+                    if (returnBytes) {
+                        byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
+                        resultData.putByteArray(RESULT_DECRYPTED_BYTES, output);
+                    } else {
+                        String output = new String(
+                                ((ByteArrayOutputStream) outStream).toByteArray());
+                        resultData.putString(RESULT_DECRYPTED_STRING, output);
+                    }
+
+                    break;
+                case TARGET_FILE:
+                    // nothing, file was written, just send okay and verification bundle
+
+                    break;
+                case TARGET_STREAM:
+                    String uri = DataStream.buildDataStreamUri(streamFilename).toString();
+                    resultData.putString(RESULT_URI, uri);
+
+                    break;
+                }
+
+                OtherHelper.logDebugBundle(resultData, "resultData");
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_SAVE_KEYRING:
+
+            try {
+                /* Input */
+                String oldPassPhrase = data.getString(CURRENT_PASSPHRASE);
+                String newPassPhrase = data.getString(NEW_PASSPHRASE);
+                if (newPassPhrase == null) {
+                    newPassPhrase = oldPassPhrase;
+                }
+                ArrayList<String> userIds = data.getStringArrayList(USER_IDS);
+                ArrayList<PGPSecretKey> keys = PGPConversionHelper.BytesToPGPSecretKeyList(data
+                        .getByteArray(KEYS));
+                ArrayList<Integer> keysUsages = data.getIntegerArrayList(KEYS_USAGES);
+                long masterKeyId = data.getLong(MASTER_KEY_ID);
+
+                /* Operation */
+                PGPMain.buildSecretKey(this, userIds, keys, keysUsages, masterKeyId, oldPassPhrase,
+                        newPassPhrase, this);
+                PassphraseCacheService.addCachedPassphrase(this, masterKeyId, newPassPhrase);
+
+                /* Output */
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_GENERATE_KEY:
+
+            try {
+                /* Input */
+                int algorithm = data.getInt(ALGORITHM);
+                String passphrase = data.getString(SYMMETRIC_PASSPHRASE);
+                int keysize = data.getInt(KEY_SIZE);
+                PGPSecretKey masterKey = null;
+                if (data.containsKey(MASTER_KEY)) {
+                    masterKey = PGPConversionHelper.BytesToPGPSecretKey(data
+                            .getByteArray(MASTER_KEY));
+                }
+
+                /* Operation */
+                PGPSecretKeyRing newKeyRing = PGPMain.createKey(this, algorithm, keysize,
+                        passphrase, masterKey);
+
+                /* Output */
+                Bundle resultData = new Bundle();
+                resultData.putByteArray(RESULT_NEW_KEY,
+                        PGPConversionHelper.PGPSecretKeyRingToBytes(newKeyRing));
+
+                OtherHelper.logDebugBundle(resultData, "resultData");
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_GENERATE_DEFAULT_RSA_KEYS:
+            // generate one RSA 2048 key for signing and one subkey for encrypting!
+            try {
+                /* Input */
+                String passphrase = data.getString(SYMMETRIC_PASSPHRASE);
+
+                /* Operation */
+                PGPSecretKeyRing masterKeyRing = PGPMain.createKey(this, Id.choice.algorithm.rsa,
+                        2048, passphrase, null);
+
+                PGPSecretKeyRing subKeyRing = PGPMain.createKey(this, Id.choice.algorithm.rsa,
+                        2048, passphrase, masterKeyRing.getSecretKey());
+
+                /* Output */
+                Bundle resultData = new Bundle();
+                resultData.putByteArray(RESULT_NEW_KEY,
+                        PGPConversionHelper.PGPSecretKeyRingToBytes(masterKeyRing));
+                resultData.putByteArray(RESULT_NEW_KEY2,
+                        PGPConversionHelper.PGPSecretKeyRingToBytes(subKeyRing));
+
+                OtherHelper.logDebugBundle(resultData, "resultData");
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_DELETE_FILE_SECURELY:
+            try {
+                /* Input */
+                String deleteFile = data.getString(DELETE_FILE);
+
+                /* Operation */
+                try {
+                    PGPMain.deleteFileSecurely(this, this, new File(deleteFile));
+                } catch (FileNotFoundException e) {
+                    throw new PGPMain.ApgGeneralException(getString(R.string.error_fileNotFound,
+                            deleteFile));
+                } catch (IOException e) {
+                    throw new PGPMain.ApgGeneralException(getString(
+                            R.string.error_fileDeleteFailed, deleteFile));
+                }
+
+                /* Output */
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_IMPORT_KEY:
+            try {
+
+                /* Input */
+                int target = data.getInt(TARGET);
+
+                int keyType = Id.type.public_key;
+                if (data.containsKey(IMPORT_KEY_TYPE)) {
+                    keyType = data.getInt(IMPORT_KEY_TYPE);
+                }
+
+                /* Operation */
+                InputStream inStream = null;
+                long inLength = -1;
+                InputData inputData = null;
+                switch (target) {
+                case TARGET_BYTES: /* import key from bytes directly */
+                    byte[] bytes = data.getByteArray(IMPORT_BYTES);
+
+                    inStream = new ByteArrayInputStream(bytes);
+                    inLength = bytes.length;
+
+                    inputData = new InputData(inStream, inLength);
+
+                    break;
+                case TARGET_FILE: /* import key from file */
+                    String inputFile = data.getString(IMPORT_FILENAME);
+
+                    inStream = new FileInputStream(inputFile);
+                    File file = new File(inputFile);
+                    inLength = file.length();
+                    inputData = new InputData(inStream, inLength);
+
+                    break;
+
+                case TARGET_STREAM:
+                    // TODO: not implemented
+                    break;
+                }
+
+                Bundle resultData = new Bundle();
+                resultData = PGPMain.importKeyRings(this, keyType, inputData, this);
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_EXPORT_KEY:
+            try {
+
+                /* Input */
+                int keyType = Id.type.public_key;
+                if (data.containsKey(EXPORT_KEY_TYPE)) {
+                    keyType = data.getInt(EXPORT_KEY_TYPE);
+                }
+
+                String outputFile = data.getString(EXPORT_FILENAME);
+
+                boolean exportAll = data.getBoolean(EXPORT_ALL);
+                int keyRingId = -1;
+                if (!exportAll) {
+                    keyRingId = data.getInt(EXPORT_KEY_RING_ID);
+                }
+
+                /* Operation */
+
+                // check if storage is ready
+                if (!FileHelper.isStorageMounted(outputFile)) {
+                    throw new ApgGeneralException(getString(R.string.error_externalStorageNotReady));
+                }
+
+                // OutputStream
+                FileOutputStream outStream = new FileOutputStream(outputFile);
+
+                Vector<Integer> keyRingIds = new Vector<Integer>();
+                if (exportAll) {
+                    if (keyType == Id.type.public_key) {
+                        keyRingIds = ProviderHelper.getPublicKeyRingsRowIds(this);
+                    } else {
+                        keyRingIds = ProviderHelper.getSecretKeyRingsRowIds(this);
+                    }
+                } else {
+                    keyRingIds.add(keyRingId);
+                }
+
+                Bundle resultData = new Bundle();
+                resultData = PGPMain.exportKeyRings(this, keyRingIds, outStream, this);
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_UPLOAD_KEY:
+            try {
+
+                /* Input */
+                int keyRingRowId = data.getInt(UPLOAD_KEY_KEYRING_ROW_ID);
+                String keyServer = data.getString(UPLOAD_KEY_SERVER);
+
+                /* Operation */
+                HkpKeyServer server = new HkpKeyServer(keyServer);
+
+                PGPPublicKeyRing keyring = ProviderHelper.getPGPPublicKeyRingByRowId(this, keyRingRowId);
+                if (keyring != null) {
+                    boolean uploaded = PGPMain.uploadKeyRingToServer(server,
+                            (PGPPublicKeyRing) keyring);
+                    if (!uploaded) {
+                        throw new ApgGeneralException("Unable to export key to selected server");
+                    }
+                }
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_QUERY_KEY:
+            try {
+
+                /* Input */
+                int queryType = data.getInt(QUERY_KEY_TYPE);
+                String keyServer = data.getString(QUERY_KEY_SERVER);
+
+                String queryString = data.getString(QUERY_KEY_STRING);
+                long keyId = data.getLong(QUERY_KEY_ID);
+
+                /* Operation */
+                Bundle resultData = new Bundle();
+
+                HkpKeyServer server = new HkpKeyServer(keyServer);
+                if (queryType == Id.keyserver.search) {
+                    ArrayList<KeyInfo> searchResult = server.search(queryString);
+
+                    resultData.putParcelableArrayList(RESULT_QUERY_KEY_SEARCH_RESULT, searchResult);
+                } else if (queryType == Id.keyserver.get) {
+                    String keyData = server.get(keyId);
+
+                    resultData.putString(RESULT_QUERY_KEY_KEY_DATA, keyData);
+                }
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY, resultData);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        case ACTION_SIGN_KEY:
+            try {
+
+                /* Input */
+                long masterKeyId = data.getLong(SIGN_KEY_MASTER_KEY_ID);
+                long pubKeyId = data.getLong(SIGN_KEY_PUB_KEY_ID);
+
+                /* Operation */
+                String signaturePassPhrase = PassphraseCacheService.getCachedPassphrase(this,
+                        masterKeyId);
+
+                PGPPublicKeyRing signedPubKeyRing = PGPMain.signKey(this, masterKeyId, pubKeyId,
+                        signaturePassPhrase);
+
+                // store the signed key in our local cache
+                int retval = PGPMain.storeKeyRingInCache(this, signedPubKeyRing);
+                if (retval != Id.return_value.ok && retval != Id.return_value.updated) {
+                    throw new ApgGeneralException("Failed to store signed key in local cache");
+                }
+
+                sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_OKAY);
+            } catch (Exception e) {
+                sendErrorToHandler(e);
+            }
+
+            break;
+
+        default:
+            break;
+        }
+
+    }
+
+    private void sendErrorToHandler(Exception e) {
+        Log.e(Constants.TAG, "ApgService Exception: ", e);
+        e.printStackTrace();
+
+        Bundle data = new Bundle();
+        data.putString(ApgIntentServiceHandler.DATA_ERROR, e.getMessage());
+        sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_EXCEPTION, null, data);
+    }
+
+    private void sendMessageToHandler(Integer arg1, Integer arg2, Bundle data) {
+        Message msg = Message.obtain();
+        msg.arg1 = arg1;
+        if (arg2 != null) {
+            msg.arg2 = arg2;
+        }
+        if (data != null) {
+            msg.setData(data);
+        }
+
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+
+    private void sendMessageToHandler(Integer arg1, Bundle data) {
+        sendMessageToHandler(arg1, null, data);
+    }
+
+    private void sendMessageToHandler(Integer arg1) {
+        sendMessageToHandler(arg1, null, null);
+    }
+
+    /**
+     * Set progress of ProgressDialog by sending message to handler on UI thread
+     */
+    public void setProgress(String message, int progress, int max) {
+        Log.d(Constants.TAG, "Send message by setProgress with progress=" + progress + ", max="
+                + max);
+
+        Bundle data = new Bundle();
+        if (message != null) {
+            data.putString(ApgIntentServiceHandler.DATA_MESSAGE, message);
+        }
+        data.putInt(ApgIntentServiceHandler.DATA_PROGRESS, progress);
+        data.putInt(ApgIntentServiceHandler.DATA_PROGRESS_MAX, max);
+
+        sendMessageToHandler(ApgIntentServiceHandler.MESSAGE_UPDATE_PROGRESS, null, data);
+    }
+
+    public void setProgress(int resourceId, int progress, int max) {
+        setProgress(getString(resourceId), progress, max);
+    }
+
+    public void setProgress(int progress, int max) {
+        setProgress(null, progress, max);
+    }
+}
diff --git a/org_apg/src/org/thialfihar/android/apg/service/ApgServiceHandler.java b/org_apg/src/org/thialfihar/android/apg/service/ApgIntentServiceHandler.java
index 91b7d4451..8494cf035 100644
--- a/org_apg/src/org/thialfihar/android/apg/service/ApgServiceHandler.java
+++ b/org_apg/src/org/thialfihar/android/apg/service/ApgIntentServiceHandler.java
@@ -26,7 +26,7 @@ import android.os.Message;
 import android.support.v4.app.FragmentActivity;
 import android.widget.Toast;
 
-public class ApgServiceHandler extends Handler {
+public class ApgIntentServiceHandler extends Handler {
 
     // possible messages send from this service to handler on ui
     public static final int MESSAGE_OKAY = 1;
@@ -43,16 +43,16 @@ public class ApgServiceHandler extends Handler {
     Activity mActivity;
     ProgressDialogFragment mProgressDialogFragment;
 
-    public ApgServiceHandler(Activity activity) {
+    public ApgIntentServiceHandler(Activity activity) {
         this.mActivity = activity;
     }
 
-    public ApgServiceHandler(Activity activity, ProgressDialogFragment progressDialogFragment) {
+    public ApgIntentServiceHandler(Activity activity, ProgressDialogFragment progressDialogFragment) {
         this.mActivity = activity;
         this.mProgressDialogFragment = progressDialogFragment;
     }
 
-    public ApgServiceHandler(Activity activity, int progressDialogMessageId, int progressDialogStyle) {
+    public ApgIntentServiceHandler(Activity activity, int progressDialogMessageId, int progressDialogStyle) {
         this.mActivity = activity;
         this.mProgressDialogFragment = ProgressDialogFragment.newInstance(progressDialogMessageId,
                 progressDialogStyle);
diff --git a/org_apg/src/org/thialfihar/android/apg/service/ApgRemoteService.java b/org_apg/src/org/thialfihar/android/apg/service/ApgRemoteService.java
deleted file mode 100644
index 1cfdf4864..000000000
--- a/org_apg/src/org/thialfihar/android/apg/service/ApgRemoteService.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package org.thialfihar.android.apg.service;
-
-public class ApgRemoteService {
-
-}
diff --git a/org_apg/src/org/thialfihar/android/apg/service/ApgService.java b/org_apg/src/org/thialfihar/android/apg/service/ApgService.java
index 547e1ee6a..1404e441d 100644
--- a/org_apg/src/org/thialfihar/android/apg/service/ApgService.java
+++ b/org_apg/src/org/thialfihar/android/apg/service/ApgService.java
@@ -1,887 +1,296 @@
-/*
- * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package org.thialfihar.android.apg.service;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.ArrayList;
-import java.util.Vector;
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.SignatureException;
 
-import org.spongycastle.openpgp.PGPPublicKeyRing;
-import org.spongycastle.openpgp.PGPSecretKey;
-import org.spongycastle.openpgp.PGPSecretKeyRing;
+import org.spongycastle.openpgp.PGPException;
 import org.thialfihar.android.apg.Constants;
 import org.thialfihar.android.apg.Id;
 import org.thialfihar.android.apg.R;
-import org.thialfihar.android.apg.helper.FileHelper;
-import org.thialfihar.android.apg.helper.OtherHelper;
 import org.thialfihar.android.apg.helper.PGPMain;
-import org.thialfihar.android.apg.helper.Preferences;
 import org.thialfihar.android.apg.helper.PGPMain.ApgGeneralException;
-import org.thialfihar.android.apg.helper.PGPConversionHelper;
-import org.thialfihar.android.apg.provider.ApgContract.DataStream;
-import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.util.HkpKeyServer;
 import org.thialfihar.android.apg.util.InputData;
-import org.thialfihar.android.apg.util.KeyServer.KeyInfo;
+import org.thialfihar.android.apg.util.Log;
 import org.thialfihar.android.apg.util.ProgressDialogUpdater;
 
-import android.app.IntentService;
+import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
-import android.net.Uri;
 import android.os.Bundle;
-import android.os.Message;
-import android.os.Messenger;
+import android.os.IBinder;
 import android.os.RemoteException;
 
-import org.thialfihar.android.apg.util.Log;
-
 /**
- * This Service contains all important long lasting operations for APG. It receives Intents with
- * data from the activities or other apps, queues these intents, executes them, and stops itself
- * after doing them.
+ * TODO:
+ * 
+ * - is this service thread safe? Probably not!
+ * 
  */
-public class ApgService extends IntentService implements ProgressDialogUpdater {
-
-    /* extras that can be given by intent */
-    public static final String EXTRA_MESSENGER = "messenger";
-    public static final String EXTRA_ACTION = "action";
-    public static final String EXTRA_DATA = "data";
-
-    /* possible EXTRA_ACTIONs */
-    public static final int ACTION_ENCRYPT_SIGN = 10;
-
-    public static final int ACTION_DECRYPT_VERIFY = 20;
-
-    public static final int ACTION_SAVE_KEYRING = 30;
-    public static final int ACTION_GENERATE_KEY = 31;
-    public static final int ACTION_GENERATE_DEFAULT_RSA_KEYS = 32;
-
-    public static final int ACTION_DELETE_FILE_SECURELY = 40;
-
-    public static final int ACTION_IMPORT_KEY = 50;
-    public static final int ACTION_EXPORT_KEY = 51;
-
-    public static final int ACTION_UPLOAD_KEY = 60;
-    public static final int ACTION_QUERY_KEY = 61;
-
-    public static final int ACTION_SIGN_KEY = 70;
-
-    /* keys for data bundle */
-
-    // encrypt, decrypt, import export
-    public static final String TARGET = "target";
-    // possible targets:
-    public static final int TARGET_BYTES = 1;
-    public static final int TARGET_FILE = 2;
-    public static final int TARGET_STREAM = 3;
-
-    // encrypt
-    public static final String SECRET_KEY_ID = "secretKeyId";
-    public static final String USE_ASCII_AMOR = "useAsciiAmor";
-    public static final String ENCRYPTION_KEYS_IDS = "encryptionKeysIds";
-    public static final String SIGNATURE_KEY_ID = "signatureKeyId";
-    public static final String COMPRESSION_ID = "compressionId";
-    public static final String GENERATE_SIGNATURE = "generateSignature";
-    public static final String SIGN_ONLY = "signOnly";
-    public static final String MESSAGE_BYTES = "messageBytes";
-    public static final String INPUT_FILE = "inputFile";
-    public static final String OUTPUT_FILE = "outputFile";
-    public static final String PROVIDER_URI = "providerUri";
-
-    // decrypt/verify
-    public static final String SIGNED_ONLY = "signedOnly";
-    public static final String RETURN_BYTES = "returnBinary";
-    public static final String CIPHERTEXT_BYTES = "ciphertextBytes";
-    public static final String ASSUME_SYMMETRIC = "assumeSymmetric";
-    public static final String LOOKUP_UNKNOWN_KEY = "lookupUnknownKey";
-
-    // edit keys
-    public static final String NEW_PASSPHRASE = "newPassphrase";
-    public static final String CURRENT_PASSPHRASE = "currentPassphrase";
-    public static final String USER_IDS = "userIds";
-    public static final String KEYS = "keys";
-    public static final String KEYS_USAGES = "keysUsages";
-    public static final String MASTER_KEY_ID = "masterKeyId";
-
-    // generate key
-    public static final String ALGORITHM = "algorithm";
-    public static final String KEY_SIZE = "keySize";
-    public static final String SYMMETRIC_PASSPHRASE = "passphrase";
-    public static final String MASTER_KEY = "masterKey";
-
-    // delete file securely
-    public static final String DELETE_FILE = "deleteFile";
-
-    // import key
-    public static final String IMPORT_INPUT_STREAM = "importInputStream";
-    public static final String IMPORT_FILENAME = "importFilename";
-    public static final String IMPORT_BYTES = "importBytes";
-    public static final String IMPORT_KEY_TYPE = "importKeyType";
-
-    // export key
-    public static final String EXPORT_OUTPUT_STREAM = "exportOutputStream";
-    public static final String EXPORT_FILENAME = "exportFilename";
-    public static final String EXPORT_KEY_TYPE = "exportKeyType";
-    public static final String EXPORT_ALL = "exportAll";
-    public static final String EXPORT_KEY_RING_ID = "exportKeyRingId";
-
-    // upload key
-    public static final String UPLOAD_KEY_SERVER = "uploadKeyServer";
-    public static final String UPLOAD_KEY_KEYRING_ROW_ID = "uploadKeyRingId";
-
-    // query key
-    public static final String QUERY_KEY_SERVER = "queryKeyServer";
-    public static final String QUERY_KEY_TYPE = "queryKeyType";
-    public static final String QUERY_KEY_STRING = "queryKeyString";
-    public static final String QUERY_KEY_ID = "queryKeyId";
-
-    // sign key
-    public static final String SIGN_KEY_MASTER_KEY_ID = "signKeyMasterKeyId";
-    public static final String SIGN_KEY_PUB_KEY_ID = "signKeyPubKeyId";
-
-    /* possible data keys as result send over messenger */
-    // keys
-    public static final String RESULT_NEW_KEY = "newKey";
-    public static final String RESULT_NEW_KEY2 = "newKey2";
-
-    // encrypt
-    public static final String RESULT_SIGNATURE_DATA = "signatureData";
-    public static final String RESULT_SIGNATURE_TEXT = "signatureText";
-    public static final String RESULT_ENCRYPTED_MESSAGE = "encryptedMessage";
-    public static final String RESULT_ENCRYPTED_DATA = "encryptedData";
-    public static final String RESULT_URI = "resultUri";
-
-    // decrypt/verify
-    public static final String RESULT_DECRYPTED_MESSAGE = "decryptedMessage";
-    public static final String RESULT_DECRYPTED_DATA = "decryptedData";
-    public static final String RESULT_SIGNATURE = "signature";
-    public static final String RESULT_SIGNATURE_KEY_ID = "signatureKeyId";
-    public static final String RESULT_SIGNATURE_USER_ID = "signatureUserId";
-
-    public static final String RESULT_SIGNATURE_SUCCESS = "signatureSuccess";
-    public static final String RESULT_SIGNATURE_UNKNOWN = "signatureUnknown";
-    public static final String RESULT_SIGNATURE_LOOKUP_KEY = "lookupKey";
-
-    // import
-    public static final String RESULT_IMPORT_ADDED = "added";
-    public static final String RESULT_IMPORT_UPDATED = "updated";
-    public static final String RESULT_IMPORT_BAD = "bad";
-
-    // export
-    public static final String RESULT_EXPORT = "exported";
-
-    // query
-    public static final String RESULT_QUERY_KEY_KEY_DATA = "queryKeyKeyData";
-    public static final String RESULT_QUERY_KEY_SEARCH_RESULT = "queryKeySearchResult";
-
-    Messenger mMessenger;
-
-    public ApgService() {
-        super("ApgService");
-    }
+public class ApgService extends Service implements ProgressDialogUpdater {
+    Context mContext;
 
-    /**
-     * The IntentService calls this method from the default worker thread with the intent that
-     * started the service. When this method returns, IntentService stops the service, as
-     * appropriate.
-     */
     @Override
-    protected void onHandleIntent(Intent intent) {
-        Bundle extras = intent.getExtras();
-        if (extras == null) {
-            Log.e(Constants.TAG, "Extras bundle is null!");
-            return;
-        }
-
-        if (!(extras.containsKey(EXTRA_MESSENGER) || extras.containsKey(EXTRA_DATA) || extras
-                .containsKey(EXTRA_ACTION))) {
-            Log.e(Constants.TAG,
-                    "Extra bundle must contain a messenger, a data bundle, and an action!");
-            return;
-        }
-
-        mMessenger = (Messenger) extras.get(EXTRA_MESSENGER);
-        Bundle data = extras.getBundle(EXTRA_DATA);
-
-        OtherHelper.logDebugBundle(data, "EXTRA_DATA");
-
-        int action = extras.getInt(EXTRA_ACTION);
-
-        // execute action from extra bundle
-        switch (action) {
-        case ACTION_ENCRYPT_SIGN:
-
-            try {
-                /* Input */
-                int target = data.getInt(TARGET);
-
-                long secretKeyId = data.getLong(SECRET_KEY_ID);
-                String passphrase = data.getString(SYMMETRIC_PASSPHRASE);
-
-                boolean useAsciiArmour = data.getBoolean(USE_ASCII_AMOR);
-                long encryptionKeyIds[] = data.getLongArray(ENCRYPTION_KEYS_IDS);
-                long signatureKeyId = data.getLong(SIGNATURE_KEY_ID);
-                int compressionId = data.getInt(COMPRESSION_ID);
-                boolean generateSignature = data.getBoolean(GENERATE_SIGNATURE);
-                boolean signOnly = data.getBoolean(SIGN_ONLY);
-
-                InputStream inStream = null;
-                long inLength = -1;
-                InputData inputData = null;
-                OutputStream outStream = null;
-                String streamFilename = null;
-                switch (target) {
-                case TARGET_BYTES: /* encrypting bytes directly */
-                    byte[] bytes = data.getByteArray(MESSAGE_BYTES);
-
-                    inStream = new ByteArrayInputStream(bytes);
-                    inLength = bytes.length;
-
-                    inputData = new InputData(inStream, inLength);
-                    outStream = new ByteArrayOutputStream();
-
-                    break;
-                case TARGET_FILE: /* encrypting file */
-                    String inputFile = data.getString(INPUT_FILE);
-                    String outputFile = data.getString(OUTPUT_FILE);
-
-                    // check if storage is ready
-                    if (!FileHelper.isStorageMounted(inputFile)
-                            || !FileHelper.isStorageMounted(outputFile)) {
-                        sendErrorToHandler(new ApgGeneralException(
-                                getString(R.string.error_externalStorageNotReady)));
-                        return;
-                    }
-
-                    inStream = new FileInputStream(inputFile);
-                    File file = new File(inputFile);
-                    inLength = file.length();
-                    inputData = new InputData(inStream, inLength);
-
-                    outStream = new FileOutputStream(outputFile);
-
-                    break;
-
-                case TARGET_STREAM: /* Encrypting stream from content uri */
-                    Uri providerUri = (Uri) data.getParcelable(PROVIDER_URI);
-
-                    // InputStream
-                    InputStream in = getContentResolver().openInputStream(providerUri);
-                    inLength = PGPMain.getLengthOfStream(in);
-                    inputData = new InputData(in, inLength);
-
-                    // OutputStream
-                    try {
-                        while (true) {
-                            streamFilename = PGPMain.generateRandomString(32);
-                            if (streamFilename == null) {
-                                throw new PGPMain.ApgGeneralException(
-                                        "couldn't generate random file name");
-                            }
-                            openFileInput(streamFilename).close();
-                        }
-                    } catch (FileNotFoundException e) {
-                        // found a name that isn't used yet
-                    }
-                    outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
-
-                    break;
-
-                default:
-                    throw new PGPMain.ApgGeneralException("No target choosen!");
-
-                }
-
-                /* Operation */
-
-                if (generateSignature) {
-                    Log.d(Constants.TAG, "generating signature...");
-                    PGPMain.generateSignature(this, inputData, outStream, useAsciiArmour, false,
-                            secretKeyId, PassphraseCacheService.getCachedPassphrase(this,
-                                    secretKeyId), Preferences.getPreferences(this)
-                                    .getDefaultHashAlgorithm(), Preferences.getPreferences(this)
-                                    .getForceV3Signatures(), this);
-                } else if (signOnly) {
-                    Log.d(Constants.TAG, "sign only...");
-                    PGPMain.signText(this, inputData, outStream, secretKeyId,
-                            PassphraseCacheService.getCachedPassphrase(this, secretKeyId),
-                            Preferences.getPreferences(this).getDefaultHashAlgorithm(), Preferences
-                                    .getPreferences(this).getForceV3Signatures(), this);
-                } else {
-                    Log.d(Constants.TAG, "encrypt...");
-                    PGPMain.encrypt(this, inputData, outStream, useAsciiArmour, encryptionKeyIds,
-                            signatureKeyId,
-                            PassphraseCacheService.getCachedPassphrase(this, signatureKeyId), this,
-                            Preferences.getPreferences(this).getDefaultEncryptionAlgorithm(),
-                            Preferences.getPreferences(this).getDefaultHashAlgorithm(),
-                            compressionId, Preferences.getPreferences(this).getForceV3Signatures(),
-                            passphrase);
-                }
-
-                outStream.close();
-
-                /* Output */
-
-                Bundle resultData = new Bundle();
-
-                switch (target) {
-                case TARGET_BYTES:
-                    if (useAsciiArmour) {
-                        String output = new String(
-                                ((ByteArrayOutputStream) outStream).toByteArray());
-                        if (generateSignature) {
-                            resultData.putString(RESULT_SIGNATURE_TEXT, output);
-                        } else {
-                            resultData.putString(RESULT_ENCRYPTED_MESSAGE, output);
-                        }
-                    } else {
-                        byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
-                        if (generateSignature) {
-                            resultData.putByteArray(RESULT_SIGNATURE_DATA, output);
-                        } else {
-                            resultData.putByteArray(RESULT_ENCRYPTED_DATA, output);
-                        }
-                    }
-
-                    break;
-                case TARGET_FILE:
-                    // nothing, file was written, just send okay
-
-                    break;
-                case TARGET_STREAM:
-                    String uri = DataStream.buildDataStreamUri(streamFilename).toString();
-                    resultData.putString(RESULT_URI, uri);
-
-                    break;
-                }
-
-                OtherHelper.logDebugBundle(resultData, "resultData");
-
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
-
-            break;
-
-        case ACTION_DECRYPT_VERIFY:
-            try {
-                /* Input */
-                int target = data.getInt(TARGET);
-
-                long secretKeyId = data.getLong(SECRET_KEY_ID);
-                byte[] bytes = data.getByteArray(CIPHERTEXT_BYTES);
-                boolean signedOnly = data.getBoolean(SIGNED_ONLY);
-                boolean returnBytes = data.getBoolean(RETURN_BYTES);
-                boolean assumeSymmetricEncryption = data.getBoolean(ASSUME_SYMMETRIC);
-
-                boolean lookupUnknownKey = data.getBoolean(LOOKUP_UNKNOWN_KEY);
-
-                InputStream inStream = null;
-                long inLength = -1;
-                InputData inputData = null;
-                OutputStream outStream = null;
-                String streamFilename = null;
-                switch (target) {
-                case TARGET_BYTES: /* decrypting bytes directly */
-                    inStream = new ByteArrayInputStream(bytes);
-                    inLength = bytes.length;
-
-                    inputData = new InputData(inStream, inLength);
-                    outStream = new ByteArrayOutputStream();
-
-                    break;
-
-                case TARGET_FILE: /* decrypting file */
-                    String inputFile = data.getString(INPUT_FILE);
-                    String outputFile = data.getString(OUTPUT_FILE);
-
-                    // check if storage is ready
-                    if (!FileHelper.isStorageMounted(inputFile)
-                            || !FileHelper.isStorageMounted(outputFile)) {
-                        sendErrorToHandler(new ApgGeneralException(
-                                getString(R.string.error_externalStorageNotReady)));
-                        return;
-                    }
-
-                    // InputStream
-                    inLength = -1;
-                    inStream = new FileInputStream(inputFile);
-                    File file = new File(inputFile);
-                    inLength = file.length();
-                    inputData = new InputData(inStream, inLength);
-
-                    // OutputStream
-                    outStream = new FileOutputStream(outputFile);
-
-                    break;
-
-                case TARGET_STREAM: /* decrypting stream from content uri */
-                    Uri providerUri = (Uri) data.getParcelable(PROVIDER_URI);
-
-                    // InputStream
-                    InputStream in = getContentResolver().openInputStream(providerUri);
-                    inLength = PGPMain.getLengthOfStream(in);
-                    inputData = new InputData(in, inLength);
-
-                    // OutputStream
-                    try {
-                        while (true) {
-                            streamFilename = PGPMain.generateRandomString(32);
-                            if (streamFilename == null) {
-                                throw new PGPMain.ApgGeneralException(
-                                        "couldn't generate random file name");
-                            }
-                            openFileInput(streamFilename).close();
-                        }
-                    } catch (FileNotFoundException e) {
-                        // found a name that isn't used yet
-                    }
-                    outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
-
-                    break;
-
-                default:
-                    throw new PGPMain.ApgGeneralException("No target choosen!");
-
-                }
-
-                /* Operation */
-
-                Bundle resultData = new Bundle();
-
-                // verifyText and decrypt returning additional resultData values for the
-                // verification of signatures
-                if (signedOnly) {
-                    resultData = PGPMain.verifyText(this, inputData, outStream, lookupUnknownKey,
-                            this);
-                } else {
-                    resultData = PGPMain.decrypt(this, inputData, outStream,
-                            PassphraseCacheService.getCachedPassphrase(this, secretKeyId), this,
-                            assumeSymmetricEncryption);
-                }
+    public void onCreate() {
+        super.onCreate();
+        mContext = this;
+        Log.d(Constants.TAG, "ApgService, onCreate()");
+    }
 
-                outStream.close();
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        Log.d(Constants.TAG, "ApgService, onDestroy()");
+    }
 
-                /* Output */
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
 
-                switch (target) {
-                case TARGET_BYTES:
-                    if (returnBytes) {
-                        byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
-                        resultData.putByteArray(RESULT_DECRYPTED_DATA, output);
-                    } else {
-                        String output = new String(
-                                ((ByteArrayOutputStream) outStream).toByteArray());
-                        resultData.putString(RESULT_DECRYPTED_MESSAGE, output);
-                    }
+    void encryptAndSignImplementation(byte[] inputBytes, String inputUri, boolean useAsciiArmor,
+            int compression, long[] encryptionKeyIds, String encryptionPassphrase,
+            int symmetricEncryptionAlgorithm, long signatureKeyId, int signatureHashAlgorithm,
+            boolean signatureForceV3, String signaturePassphrase, IApgEncryptDecryptHandler handler)
+            throws RemoteException {
 
-                    break;
-                case TARGET_FILE:
-                    // nothing, file was written, just send okay and verification bundle
+        try {
+            // TODO use inputUri
 
-                    break;
-                case TARGET_STREAM:
-                    String uri = DataStream.buildDataStreamUri(streamFilename).toString();
-                    resultData.putString(RESULT_URI, uri);
+            // build InputData and write into OutputStream
+            InputStream inputStream = new ByteArrayInputStream(inputBytes);
+            long inputLength = inputBytes.length;
+            InputData input = new InputData(inputStream, inputLength);
 
-                    break;
-                }
+            OutputStream output = new ByteArrayOutputStream();
 
-                OtherHelper.logDebugBundle(resultData, "resultData");
+            PGPMain.encryptAndSign(mContext, ApgService.this, input, output, useAsciiArmor,
+                    compression, encryptionKeyIds, encryptionPassphrase,
+                    symmetricEncryptionAlgorithm, signatureKeyId, signatureHashAlgorithm,
+                    signatureForceV3, signaturePassphrase);
 
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
+            output.close();
 
-            break;
+            byte[] outputBytes = ((ByteArrayOutputStream) output).toByteArray();
 
-        case ACTION_SAVE_KEYRING:
+            // return over handler on client side
+            handler.onSuccessEncrypt(outputBytes, null);
+        } catch (Exception e) {
+            Log.e(Constants.TAG, "ApgService, Exception!", e);
 
             try {
-                /* Input */
-                String oldPassPhrase = data.getString(CURRENT_PASSPHRASE);
-                String newPassPhrase = data.getString(NEW_PASSPHRASE);
-                if (newPassPhrase == null) {
-                    newPassPhrase = oldPassPhrase;
-                }
-                ArrayList<String> userIds = data.getStringArrayList(USER_IDS);
-                ArrayList<PGPSecretKey> keys = PGPConversionHelper.BytesToPGPSecretKeyList(data
-                        .getByteArray(KEYS));
-                ArrayList<Integer> keysUsages = data.getIntegerArrayList(KEYS_USAGES);
-                long masterKeyId = data.getLong(MASTER_KEY_ID);
-
-                /* Operation */
-                PGPMain.buildSecretKey(this, userIds, keys, keysUsages, masterKeyId, oldPassPhrase,
-                        newPassPhrase, this);
-                PassphraseCacheService.addCachedPassphrase(this, masterKeyId, newPassPhrase);
-
-                /* Output */
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
+                handler.onException(getExceptionId(e), e.getMessage());
+            } catch (Exception t) {
+                Log.e(Constants.TAG, "Error returning exception to client", t);
             }
+        }
+    }
 
-            break;
+    public void decryptAndVerifyImplementation(byte[] inputBytes, String inputUri,
+            String passphrase, boolean assumeSymmetric, IApgEncryptDecryptHandler handler)
+            throws RemoteException {
 
-        case ACTION_GENERATE_KEY:
+        try {
+            // build InputData and write into OutputStream
+            InputStream inputStream = new ByteArrayInputStream(inputBytes);
+            long inputLength = inputBytes.length;
+            InputData inputData = new InputData(inputStream, inputLength);
 
-            try {
-                /* Input */
-                int algorithm = data.getInt(ALGORITHM);
-                String passphrase = data.getString(SYMMETRIC_PASSPHRASE);
-                int keysize = data.getInt(KEY_SIZE);
-                PGPSecretKey masterKey = null;
-                if (data.containsKey(MASTER_KEY)) {
-                    masterKey = PGPConversionHelper.BytesToPGPSecretKey(data
-                            .getByteArray(MASTER_KEY));
-                }
+            OutputStream outputStream = new ByteArrayOutputStream();
 
-                /* Operation */
-                PGPSecretKeyRing newKeyRing = PGPMain.createKey(this, algorithm, keysize,
-                        passphrase, masterKey);
+            Bundle outputBundle = PGPMain.decryptAndVerify(mContext, ApgService.this, inputData,
+                    outputStream, passphrase, assumeSymmetric);
 
-                /* Output */
-                Bundle resultData = new Bundle();
-                resultData.putByteArray(RESULT_NEW_KEY,
-                        PGPConversionHelper.PGPSecretKeyRingToBytes(newKeyRing));
+            outputStream.close();
 
-                OtherHelper.logDebugBundle(resultData, "resultData");
+            byte[] outputBytes = ((ByteArrayOutputStream) outputStream).toByteArray();
 
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
+            // get signature informations from bundle
+            boolean signature = outputBundle.getBoolean(ApgIntentService.RESULT_SIGNATURE);
+            long signatureKeyId = outputBundle.getLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID);
+            String signatureUserId = outputBundle
+                    .getString(ApgIntentService.RESULT_SIGNATURE_USER_ID);
+            boolean signatureSuccess = outputBundle
+                    .getBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS);
+            boolean signatureUnknown = outputBundle
+                    .getBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN);
 
-            break;
+            // return over handler on client side
+            handler.onSuccessDecrypt(outputBytes, null, signature, signatureKeyId, signatureUserId,
+                    signatureSuccess, signatureUnknown);
+        } catch (Exception e) {
+            Log.e(Constants.TAG, "ApgService, Exception!", e);
 
-        case ACTION_GENERATE_DEFAULT_RSA_KEYS:
-            // generate one RSA 2048 key for signing and one subkey for encrypting!
             try {
-                /* Input */
-                String passphrase = data.getString(SYMMETRIC_PASSPHRASE);
-
-                /* Operation */
-                PGPSecretKeyRing masterKeyRing = PGPMain.createKey(this, Id.choice.algorithm.rsa,
-                        2048, passphrase, null);
-
-                PGPSecretKeyRing subKeyRing = PGPMain.createKey(this, Id.choice.algorithm.rsa,
-                        2048, passphrase, masterKeyRing.getSecretKey());
-
-                /* Output */
-                Bundle resultData = new Bundle();
-                resultData.putByteArray(RESULT_NEW_KEY,
-                        PGPConversionHelper.PGPSecretKeyRingToBytes(masterKeyRing));
-                resultData.putByteArray(RESULT_NEW_KEY2,
-                        PGPConversionHelper.PGPSecretKeyRingToBytes(subKeyRing));
-
-                OtherHelper.logDebugBundle(resultData, "resultData");
-
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
+                handler.onException(getExceptionId(e), e.getMessage());
+            } catch (Exception t) {
+                Log.e(Constants.TAG, "Error returning exception to client", t);
             }
+        }
+    }
 
-            break;
+    private void getDecryptionKeyImplementation(byte[] inputBytes, String inputUri,
+            IApgHelperHandler handler) {
 
-        case ACTION_DELETE_FILE_SECURELY:
-            try {
-                /* Input */
-                String deleteFile = data.getString(DELETE_FILE);
-
-                /* Operation */
-                try {
-                    PGPMain.deleteFileSecurely(this, new File(deleteFile), this);
-                } catch (FileNotFoundException e) {
-                    throw new PGPMain.ApgGeneralException(getString(R.string.error_fileNotFound,
-                            deleteFile));
-                } catch (IOException e) {
-                    throw new PGPMain.ApgGeneralException(getString(
-                            R.string.error_fileDeleteFailed, deleteFile));
-                }
+        // TODO: implement inputUri
 
-                /* Output */
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
+        try {
+            InputStream inputStream = new ByteArrayInputStream(inputBytes);
 
-            break;
+            long secretKeyId = Id.key.none;
+            boolean symmetric;
 
-        case ACTION_IMPORT_KEY:
             try {
-
-                /* Input */
-                int target = data.getInt(TARGET);
-
-                int keyType = Id.type.public_key;
-                if (data.containsKey(IMPORT_KEY_TYPE)) {
-                    keyType = data.getInt(IMPORT_KEY_TYPE);
+                secretKeyId = PGPMain.getDecryptionKeyId(ApgService.this, inputStream);
+                if (secretKeyId == Id.key.none) {
+                    throw new PGPMain.ApgGeneralException(
+                            getString(R.string.error_noSecretKeyFound));
                 }
-
-                /* Operation */
-                InputStream inStream = null;
-                long inLength = -1;
-                InputData inputData = null;
-                switch (target) {
-                case TARGET_BYTES: /* import key from bytes directly */
-                    byte[] bytes = data.getByteArray(IMPORT_BYTES);
-
-                    inStream = new ByteArrayInputStream(bytes);
-                    inLength = bytes.length;
-
-                    inputData = new InputData(inStream, inLength);
-
-                    break;
-                case TARGET_FILE: /* import key from file */
-                    String inputFile = data.getString(IMPORT_FILENAME);
-
-                    inStream = new FileInputStream(inputFile);
-                    File file = new File(inputFile);
-                    inLength = file.length();
-                    inputData = new InputData(inStream, inLength);
-
-                    break;
-
-                case TARGET_STREAM:
-                    // TODO: not implemented
-                    break;
+                symmetric = false;
+            } catch (PGPMain.NoAsymmetricEncryptionException e) {
+                secretKeyId = Id.key.symmetric;
+                if (!PGPMain.hasSymmetricEncryption(ApgService.this, inputStream)) {
+                    throw new PGPMain.ApgGeneralException(
+                            getString(R.string.error_noKnownEncryptionFound));
                 }
-
-                Bundle resultData = new Bundle();
-                resultData = PGPMain.importKeyRings(this, keyType, inputData, this);
-
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
+                symmetric = true;
             }
 
-            break;
-
-        case ACTION_EXPORT_KEY:
-            try {
-
-                /* Input */
-                int keyType = Id.type.public_key;
-                if (data.containsKey(EXPORT_KEY_TYPE)) {
-                    keyType = data.getInt(EXPORT_KEY_TYPE);
-                }
-
-                String outputFile = data.getString(EXPORT_FILENAME);
-
-                boolean exportAll = data.getBoolean(EXPORT_ALL);
-                int keyRingId = -1;
-                if (!exportAll) {
-                    keyRingId = data.getInt(EXPORT_KEY_RING_ID);
-                }
-
-                /* Operation */
+            handler.onSuccessGetDecryptionKey(secretKeyId, symmetric);
 
-                // check if storage is ready
-                if (!FileHelper.isStorageMounted(outputFile)) {
-                    sendErrorToHandler(new ApgGeneralException(
-                            getString(R.string.error_externalStorageNotReady)));
-                    return;
-                }
-
-                // OutputStream
-                FileOutputStream outStream = new FileOutputStream(outputFile);
-
-                Vector<Integer> keyRingIds = new Vector<Integer>();
-                if (exportAll) {
-                    if (keyType == Id.type.public_key) {
-                        keyRingIds = ProviderHelper.getPublicKeyRingsRowIds(this);
-                    } else {
-                        keyRingIds = ProviderHelper.getSecretKeyRingsRowIds(this);
-                    }
-                } else {
-                    keyRingIds.add(keyRingId);
-                }
-
-                Bundle resultData = new Bundle();
-                resultData = PGPMain.exportKeyRings(this, keyRingIds, outStream, this);
+        } catch (Exception e) {
+            Log.e(Constants.TAG, "ApgService, Exception!", e);
 
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
-
-            break;
-
-        case ACTION_UPLOAD_KEY:
             try {
-
-                /* Input */
-                int keyRingRowId = data.getInt(UPLOAD_KEY_KEYRING_ROW_ID);
-                String keyServer = data.getString(UPLOAD_KEY_SERVER);
-
-                /* Operation */
-                HkpKeyServer server = new HkpKeyServer(keyServer);
-
-                PGPPublicKeyRing keyring = ProviderHelper.getPGPPublicKeyRing(this, keyRingRowId);
-                if (keyring != null) {
-                    boolean uploaded = PGPMain.uploadKeyRingToServer(server,
-                            (PGPPublicKeyRing) keyring);
-                    if (!uploaded) {
-                        sendErrorToHandler(new ApgGeneralException(
-                                "Unable to export key to selected server"));
-                        return;
-                    }
-                }
-
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
+                handler.onException(getExceptionId(e), e.getMessage());
+            } catch (Exception t) {
+                Log.e(Constants.TAG, "Error returning exception to client", t);
             }
+        }
+    }
 
-            break;
-
-        case ACTION_QUERY_KEY:
-            try {
-
-                /* Input */
-                int queryType = data.getInt(QUERY_KEY_TYPE);
-                String keyServer = data.getString(QUERY_KEY_SERVER);
-
-                String queryString = data.getString(QUERY_KEY_STRING);
-                long keyId = data.getLong(QUERY_KEY_ID);
-
-                /* Operation */
-                Bundle resultData = new Bundle();
-
-                HkpKeyServer server = new HkpKeyServer(keyServer);
-                if (queryType == Id.keyserver.search) {
-                    ArrayList<KeyInfo> searchResult = server.search(queryString);
-
-                    resultData.putParcelableArrayList(RESULT_QUERY_KEY_SEARCH_RESULT, searchResult);
-                } else if (queryType == Id.keyserver.get) {
-                    String keyData = server.get(keyId);
-
-                    resultData.putString(RESULT_QUERY_KEY_KEY_DATA, keyData);
-                }
+    /**
+     * This is the implementation of the interface IApgService. All methods are oneway, meaning
+     * asynchronous and return to the client using IApgHandler.
+     * 
+     * The real PGP code is located in PGPMain.
+     */
+    private final IApgService.Stub mBinder = new IApgService.Stub() {
 
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY, resultData);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
+        @Override
+        public void encryptAsymmetric(byte[] inputBytes, String inputUri, boolean useAsciiArmor,
+                int compression, long[] encryptionKeyIds, int symmetricEncryptionAlgorithm,
+                IApgEncryptDecryptHandler handler) throws RemoteException {
 
-            break;
+            encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression,
+                    encryptionKeyIds, null, symmetricEncryptionAlgorithm, Id.key.none, 0, false,
+                    null, handler);
+        }
 
-        case ACTION_SIGN_KEY:
-            try {
+        @Override
+        public void encryptSymmetric(byte[] inputBytes, String inputUri, boolean useAsciiArmor,
+                int compression, String encryptionPassphrase, int symmetricEncryptionAlgorithm,
+                IApgEncryptDecryptHandler handler) throws RemoteException {
 
-                /* Input */
-                long masterKeyId = data.getLong(SIGN_KEY_MASTER_KEY_ID);
-                long pubKeyId = data.getLong(SIGN_KEY_PUB_KEY_ID);
+            encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression, null,
+                    encryptionPassphrase, symmetricEncryptionAlgorithm, Id.key.none, 0, false,
+                    null, handler);
+        }
 
-                /* Operation */
-                String signaturePassPhrase = PassphraseCacheService.getCachedPassphrase(this,
-                        masterKeyId);
+        @Override
+        public void encryptAndSignAsymmetric(byte[] inputBytes, String inputUri,
+                boolean useAsciiArmor, int compression, long[] encryptionKeyIds,
+                int symmetricEncryptionAlgorithm, long signatureKeyId, int signatureHashAlgorithm,
+                boolean signatureForceV3, String signaturePassphrase,
+                IApgEncryptDecryptHandler handler) throws RemoteException {
 
-                PGPPublicKeyRing signedPubKeyRing = PGPMain.signKey(this, masterKeyId, pubKeyId,
-                        signaturePassPhrase);
+            encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression,
+                    encryptionKeyIds, null, symmetricEncryptionAlgorithm, signatureKeyId,
+                    signatureHashAlgorithm, signatureForceV3, signaturePassphrase, handler);
+        }
 
-                // store the signed key in our local cache
-                int retval = PGPMain.storeKeyRingInCache(this, signedPubKeyRing);
-                if (retval != Id.return_value.ok && retval != Id.return_value.updated) {
-                    throw new ApgGeneralException("Failed to store signed key in local cache");
-                }
+        @Override
+        public void encryptAndSignSymmetric(byte[] inputBytes, String inputUri,
+                boolean useAsciiArmor, int compression, String encryptionPassphrase,
+                int symmetricEncryptionAlgorithm, long signatureKeyId, int signatureHashAlgorithm,
+                boolean signatureForceV3, String signaturePassphrase,
+                IApgEncryptDecryptHandler handler) throws RemoteException {
 
-                sendMessageToHandler(ApgServiceHandler.MESSAGE_OKAY);
-            } catch (Exception e) {
-                sendErrorToHandler(e);
-            }
+            encryptAndSignImplementation(inputBytes, inputUri, useAsciiArmor, compression, null,
+                    encryptionPassphrase, symmetricEncryptionAlgorithm, signatureKeyId,
+                    signatureHashAlgorithm, signatureForceV3, signaturePassphrase, handler);
+        }
 
-            break;
+        @Override
+        public void decryptAndVerifyAsymmetric(byte[] inputBytes, String inputUri,
+                String keyPassphrase, IApgEncryptDecryptHandler handler) throws RemoteException {
 
-        default:
-            break;
+            decryptAndVerifyImplementation(inputBytes, inputUri, keyPassphrase, false, handler);
         }
 
-    }
+        @Override
+        public void decryptAndVerifySymmetric(byte[] inputBytes, String inputUri,
+                String encryptionPassphrase, IApgEncryptDecryptHandler handler)
+                throws RemoteException {
 
-    private void sendErrorToHandler(Exception e) {
-        Log.e(Constants.TAG, "ApgService Exception: ", e);
-        e.printStackTrace();
+            decryptAndVerifyImplementation(inputBytes, inputUri, encryptionPassphrase, true,
+                    handler);
+        }
 
-        Bundle data = new Bundle();
-        data.putString(ApgServiceHandler.DATA_ERROR, e.getMessage());
-        sendMessageToHandler(ApgServiceHandler.MESSAGE_EXCEPTION, null, data);
-    }
+        @Override
+        public void getDecryptionKey(byte[] inputBytes, String inputUri, IApgHelperHandler handler)
+                throws RemoteException {
 
-    private void sendMessageToHandler(Integer arg1, Integer arg2, Bundle data) {
-        Message msg = Message.obtain();
-        msg.arg1 = arg1;
-        if (arg2 != null) {
-            msg.arg2 = arg2;
-        }
-        if (data != null) {
-            msg.setData(data);
+            getDecryptionKeyImplementation(inputBytes, inputUri, handler);
         }
 
-        try {
-            mMessenger.send(msg);
-        } catch (RemoteException e) {
-            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
-        } catch (NullPointerException e) {
-            Log.w(Constants.TAG, "Messenger is null!", e);
+    };
+
+    /**
+     * As we can not throw an exception through Android RPC, we assign identifiers to the exception
+     * types.
+     * 
+     * @param e
+     * @return
+     */
+    private int getExceptionId(Exception e) {
+        if (e instanceof NoSuchProviderException) {
+            return 0;
+        } else if (e instanceof NoSuchAlgorithmException) {
+            return 1;
+        } else if (e instanceof SignatureException) {
+            return 2;
+        } else if (e instanceof IOException) {
+            return 3;
+        } else if (e instanceof ApgGeneralException) {
+            return 4;
+        } else if (e instanceof PGPException) {
+            return 5;
+        } else {
+            return -1;
         }
     }
 
-    private void sendMessageToHandler(Integer arg1, Bundle data) {
-        sendMessageToHandler(arg1, null, data);
-    }
+    @Override
+    public void setProgress(String message, int current, int total) {
+        // TODO Auto-generated method stub
 
-    private void sendMessageToHandler(Integer arg1) {
-        sendMessageToHandler(arg1, null, null);
     }
 
-    /**
-     * Set progress of ProgressDialog by sending message to handler on UI thread
-     */
-    public void setProgress(String message, int progress, int max) {
-        Log.d(Constants.TAG, "Send message by setProgress with progress=" + progress + ", max="
-                + max);
-
-        Bundle data = new Bundle();
-        if (message != null) {
-            data.putString(ApgServiceHandler.DATA_MESSAGE, message);
-        }
-        data.putInt(ApgServiceHandler.DATA_PROGRESS, progress);
-        data.putInt(ApgServiceHandler.DATA_PROGRESS_MAX, max);
+    @Override
+    public void setProgress(int resourceId, int current, int total) {
+        // TODO Auto-generated method stub
 
-        sendMessageToHandler(ApgServiceHandler.MESSAGE_UPDATE_PROGRESS, null, data);
     }
 
-    public void setProgress(int resourceId, int progress, int max) {
-        setProgress(getString(resourceId), progress, max);
-    }
+    @Override
+    public void setProgress(int current, int total) {
+        // TODO Auto-generated method stub
 
-    public void setProgress(int progress, int max) {
-        setProgress(null, progress, max);
     }
 }
diff --git a/org_apg/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl b/org_apg/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl
new file mode 100644
index 000000000..ff6b7254c
--- /dev/null
+++ b/org_apg/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl
@@ -0,0 +1,16 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgEncryptDecryptHandler {
+    /**
+     * Either output or streamUri is given. One of them is null
+     *
+     */
+    oneway void onSuccessEncrypt(in byte[] outputBytes, in String outputUri);
+
+    oneway void onSuccessDecrypt(in byte[] outputBytes, in String outputUri, in boolean signature,
+            in long signatureKeyId, in String signatureUserId, in boolean signatureSuccess,
+            in boolean signatureUnknown);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file
diff --git a/org_apg/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl b/org_apg/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl
new file mode 100644
index 000000000..bb405329a
--- /dev/null
+++ b/org_apg/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl
@@ -0,0 +1,9 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgHelperHandler {
+
+    oneway void onSuccessGetDecryptionKey(in long secretKeyId, in boolean symmetric);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file
diff --git a/org_apg/src/org/thialfihar/android/apg/service/IApgService.aidl b/org_apg/src/org/thialfihar/android/apg/service/IApgService.aidl
new file mode 100644
index 000000000..71c6a9e42
--- /dev/null
+++ b/org_apg/src/org/thialfihar/android/apg/service/IApgService.aidl
@@ -0,0 +1,130 @@
+package org.thialfihar.android.apg.service;
+
+import org.thialfihar.android.apg.service.IApgEncryptDecryptHandler;
+import org.thialfihar.android.apg.service.IApgSignVerifyHandler;
+import org.thialfihar.android.apg.service.IApgHelperHandler;
+
+/**
+ * All methods are oneway, which means they are asynchronous and non-blocking.
+ * Results are returned into given Handler, which has to be implemented on client side.
+ */
+interface IApgService {
+       
+    /**
+     * Encrypt
+     *
+     * Either inputBytes or inputUri is given, the other should be null.
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param inputUri
+     *            Blob in ContentProvider you want to encrypt
+     * @param useAsciiArmor 
+     *            Convert bytes to ascii armored text to guard against encoding problems
+     * @param compression
+     *            Compression: 0x21070001: none, 1: Zip, 2: Zlib, 3: BZip2
+     * @param encryptionKeyIds
+     *            Ids of public keys used for encryption
+     * @param symmetricEncryptionAlgorithm
+     *            7: AES-128, 8: AES-192, 9: AES-256, 4: Blowfish, 10: Twofish, 3: CAST5,
+     *            6: DES, 2: Triple DES, 1: IDEA
+     * @param handler
+     *            Results are returned to this IApgEncryptDecryptHandler Handler
+     *            to onSuccessEncrypt(in byte[] output), after successful encryption
+     */
+    oneway void encryptAsymmetric(in byte[] inputBytes, in String inputUri, in boolean useAsciiArmor,
+            in int compression, in long[] encryptionKeyIds, in int symmetricEncryptionAlgorithm,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as encryptAsymmetric but using a passphrase for symmetric encryption
+     *
+     * @param encryptionPassphrase
+     *            Passphrase for direct symmetric encryption using symmetricEncryptionAlgorithm
+     */
+    oneway void encryptSymmetric(in byte[] inputBytes, in String inputUri, in boolean useAsciiArmor,
+            in int compression, in String encryptionPassphrase, in int symmetricEncryptionAlgorithm,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Encrypt and sign
+     *
+     * Either inputBytes or inputUri is given, the other should be null.
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param inputUri
+     *            Blob in ContentProvider you want to encrypt
+     * @param useAsciiArmor 
+     *            Convert bytes to ascii armored text to guard against encoding problems
+     * @param compression
+     *            Compression: 0x21070001: none, 1: Zip, 2: Zlib, 3: BZip2
+     * @param encryptionKeyIds
+     *            Ids of public keys used for encryption
+     * @param symmetricEncryptionAlgorithm
+     *            7: AES-128, 8: AES-192, 9: AES-256, 4: Blowfish, 10: Twofish, 3: CAST5,
+     *            6: DES, 2: Triple DES, 1: IDEA
+     * @param signatureKeyId
+     *            Key id of key to sign with
+     * @param signatureHashAlgorithm
+     *            1: MD5, 3: RIPEMD-160, 2: SHA-1, 11: SHA-224, 8: SHA-256, 9: SHA-384,
+     *            10: SHA-512
+     * @param signatureForceV3
+     *            Force V3 signatures
+     * @param signaturePassphrase
+     *            Passphrase to unlock signature key
+     * @param handler
+     *            Results are returned to this IApgEncryptDecryptHandler Handler
+     *            to onSuccessEncrypt(in byte[] output), after successful encryption and signing
+     */
+    oneway void encryptAndSignAsymmetric(in byte[] inputBytes, in String inputUri,
+            in boolean useAsciiArmor, in int compression, in long[] encryptionKeyIds,
+            in int symmetricEncryptionAlgorithm, in long signatureKeyId, in int signatureHashAlgorithm,
+            in boolean signatureForceV3, in String signaturePassphrase,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as encryptAndSignAsymmetric but using a passphrase for symmetric encryption
+     *
+     * @param encryptionPassphrase
+     *            Passphrase for direct symmetric encryption using symmetricEncryptionAlgorithm
+     */
+    oneway void encryptAndSignSymmetric(in byte[] inputBytes, in String inputUri,
+            in boolean useAsciiArmor, in int compression, in String encryptionPassphrase,
+            in int symmetricEncryptionAlgorithm, in long signatureKeyId, in int signatureHashAlgorithm,
+            in boolean signatureForceV3, in String signaturePassphrase,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Decrypts and verifies given input bytes. If no signature is present this method
+     * will only decrypt.
+     * 
+     * @param inputBytes
+     *            Byte array you want to decrypt and verify
+     * @param inputUri
+     *            Blob in ContentProvider you want to decrypt and verify
+     * @param keyPassphrase
+     *            Passphrase to unlock secret key for decryption.
+     * @param handler
+     *            Handler where to return results to after successful encryption
+     */
+    oneway void decryptAndVerifyAsymmetric(in byte[] inputBytes, in String inputUri,
+            in String keyPassphrase, in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as decryptAndVerifyAsymmetric but for symmetric decryption.
+     *
+     * @param encryptionPassphrase
+     *            Passphrase to decrypt
+     */
+    oneway void decryptAndVerifySymmetric(in byte[] inputBytes, in String inputUri,
+            in String encryptionPassphrase, in IApgEncryptDecryptHandler handler);
+    
+    /**
+     *
+     */
+    oneway void getDecryptionKey(in byte[] inputBytes, in String inputUri,
+            in IApgHelperHandler handler);
+    
+    
+}
\ No newline at end of file
diff --git a/org_apg/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl b/org_apg/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl
new file mode 100644
index 000000000..1375d1548
--- /dev/null
+++ b/org_apg/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl
@@ -0,0 +1,11 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgSignVerifyHandler {
+    oneway void onSuccessSign(in byte[] outputBytes, in String outputUri);
+    
+    oneway void onSuccessVerify(in boolean signature, in long signatureKeyId,
+            in String signatureUserId, in boolean signatureSuccess, in boolean signatureUnknown);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file
diff --git a/org_apg/src/org/thialfihar/android/apg/service/PassphraseCacheService.java b/org_apg/src/org/thialfihar/android/apg/service/PassphraseCacheService.java
index 403c4a20d..c2bc48aa7 100644
--- a/org_apg/src/org/thialfihar/android/apg/service/PassphraseCacheService.java
+++ b/org_apg/src/org/thialfihar/android/apg/service/PassphraseCacheService.java
@@ -85,10 +85,10 @@ public class PassphraseCacheService extends Service {
      * @return
      */
     public static String getCachedPassphrase(Context context, long keyId) {
-        // try to get real key id
-        long realId = keyId;
-        if (realId != Id.key.symmetric) {
-            PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId(context, keyId);
+        // try to get master key id which is used as an identifier for cached passphrases
+        long masterKeyId = keyId;
+        if (masterKeyId != Id.key.symmetric) {
+            PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, keyId);
             if (keyRing == null) {
                 return null;
             }
@@ -96,17 +96,17 @@ public class PassphraseCacheService extends Service {
             if (masterKey == null) {
                 return null;
             }
-            realId = masterKey.getKeyID();
+            masterKeyId = masterKey.getKeyID();
         }
 
         // get cached passphrase
-        String cachedPassphrase = mPassphraseCache.get(realId);
+        String cachedPassphrase = mPassphraseCache.get(masterKeyId);
         if (cachedPassphrase == null) {
             return null;
         }
         // set it again to reset the cache life cycle
         Log.d(TAG, "Cache passphrase again when getting it!");
-        addCachedPassphrase(context, realId, cachedPassphrase);
+        addCachedPassphrase(context, masterKeyId, cachedPassphrase);
 
         return cachedPassphrase;
     }
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/DecryptActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/DecryptActivity.java
index 880349760..498dfd93b 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/DecryptActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/DecryptActivity.java
@@ -25,8 +25,8 @@ import org.thialfihar.android.apg.helper.OtherHelper;
 import org.thialfihar.android.apg.helper.PGPHelper;
 import org.thialfihar.android.apg.helper.PGPMain;
 import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.service.PassphraseCacheService;
 import org.thialfihar.android.apg.ui.dialog.DeleteFileDialogFragment;
 import org.thialfihar.android.apg.ui.dialog.FileDialogFragment;
@@ -115,7 +115,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
     private String mOutputFilename = null;
 
     private Uri mContentUri = null;
-    private byte[] mData = null;
+    private byte[] mDataBytes = null;
     private boolean mReturnBinary = false;
 
     private long mUnknownSignatureKeyId = 0;
@@ -126,14 +126,6 @@ public class DecryptActivity extends SherlockFragmentActivity {
 
     private boolean mLookupUnknownKey = true;
 
-    public void setSecretKeyId(long id) {
-        mSecretKeyId = id;
-    }
-
-    public long getSecretKeyId() {
-        return mSecretKeyId;
-    }
-
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
 
@@ -334,8 +326,8 @@ public class DecryptActivity extends SherlockFragmentActivity {
                 if (mSignatureKeyId == 0) {
                     return;
                 }
-                PGPPublicKeyRing key = ProviderHelper.getPGPPublicKeyRingByMasterKeyId(DecryptActivity.this,
-                        mSignatureKeyId);
+                PGPPublicKeyRing key = ProviderHelper.getPGPPublicKeyRingByKeyId(
+                        DecryptActivity.this, mSignatureKeyId);
                 if (key != null) {
                     Intent intent = new Intent(DecryptActivity.this, KeyServerQueryActivity.class);
                     intent.setAction(KeyServerQueryActivity.ACTION_LOOK_UP_KEY_ID);
@@ -367,7 +359,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
 
         if (decryptImmediately
                 || (mSource.getCurrentView().getId() == R.id.sourceMessage && (mMessage.getText()
-                        .length() > 0 || mData != null || mContentUri != null))) {
+                        .length() > 0 || mDataBytes != null || mContentUri != null))) {
             decryptClicked();
         }
     }
@@ -388,9 +380,9 @@ public class DecryptActivity extends SherlockFragmentActivity {
             Log.d(Constants.TAG, "got extras");
         }
 
-        mData = extras.getByteArray(EXTRA_DATA);
+        mDataBytes = extras.getByteArray(EXTRA_DATA);
         String textData = null;
-        if (mData == null) {
+        if (mDataBytes == null) {
             Log.d(Constants.TAG, "EXTRA_DATA was null");
             textData = extras.getString(EXTRA_TEXT);
         } else {
@@ -456,7 +448,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
         mReturnBinary = extras.getBoolean(EXTRA_BINARY, false);
 
         if (mContentUri == null) {
-            mData = extras.getByteArray(EXTRA_DATA);
+            mDataBytes = extras.getByteArray(EXTRA_DATA);
             String data = extras.getString(EXTRA_TEXT);
             if (data != null) {
                 Matcher matcher = PGPMain.PGP_MESSAGE.matcher(data);
@@ -567,11 +559,9 @@ public class DecryptActivity extends SherlockFragmentActivity {
 
         getDecryptionKeyFromInputStream();
 
-        Log.d(Constants.TAG, "secretKeyId: " + getSecretKeyId());
-
         // if we need a symmetric passphrase or a passphrase to use a secret key ask for it
-        if (getSecretKeyId() == Id.key.symmetric
-                || PassphraseCacheService.getCachedPassphrase(this, getSecretKeyId()) == null) {
+        if (mSecretKeyId == Id.key.symmetric
+                || PassphraseCacheService.getCachedPassphrase(this, mSecretKeyId) == null) {
             showPassphraseDialog();
         } else {
             if (mDecryptTarget == Id.target.file) {
@@ -618,7 +608,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
     }
 
     /**
-     * TODO: externalize this into ApgService???
+     * TODO: Rework function, remove global variables
      */
     private void getDecryptionKeyFromInputStream() {
         InputStream inStream = null;
@@ -646,23 +636,24 @@ public class DecryptActivity extends SherlockFragmentActivity {
                         Toast.LENGTH_SHORT).show();
             }
         } else {
-            if (mData != null) {
-                inStream = new ByteArrayInputStream(mData);
+            if (mDataBytes != null) {
+                inStream = new ByteArrayInputStream(mDataBytes);
             } else {
                 inStream = new ByteArrayInputStream(mMessage.getText().toString().getBytes());
             }
         }
 
+        // get decryption key for this inStream
         try {
             try {
-                setSecretKeyId(PGPMain.getDecryptionKeyId(this, inStream));
-                if (getSecretKeyId() == Id.key.none) {
+                mSecretKeyId = PGPMain.getDecryptionKeyId(this, inStream);
+                if (mSecretKeyId == Id.key.none) {
                     throw new PGPMain.ApgGeneralException(
                             getString(R.string.error_noSecretKeyFound));
                 }
                 mAssumeSymmetricEncryption = false;
             } catch (PGPMain.NoAsymmetricEncryptionException e) {
-                setSecretKeyId(Id.key.symmetric);
+                mSecretKeyId = Id.key.symmetric;
                 if (!PGPMain.hasSymmetricEncryption(this, inStream)) {
                     throw new PGPMain.ApgGeneralException(
                             getString(R.string.error_noKnownEncryptionFound));
@@ -684,7 +675,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
         intent.putExtra(EncryptActivity.EXTRA_TEXT, data);
         intent.putExtra(EncryptActivity.EXTRA_SUBJECT, "Re: " + mSubject);
         intent.putExtra(EncryptActivity.EXTRA_SEND_TO, mReplyTo);
-        intent.putExtra(EncryptActivity.EXTRA_SIGNATURE_KEY_ID, getSecretKeyId());
+        intent.putExtra(EncryptActivity.EXTRA_SIGNATURE_KEY_ID, mSecretKeyId);
         intent.putExtra(EncryptActivity.EXTRA_ENCRYPTION_KEY_IDS, new long[] { mSignatureKeyId });
         startActivity(intent);
     }
@@ -742,62 +733,62 @@ public class DecryptActivity extends SherlockFragmentActivity {
         Log.d(Constants.TAG, "decryptStart");
 
         // Send all information needed to service to decrypt in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_DECRYPT_VERIFY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_DECRYPT_VERIFY);
 
         // choose action based on input: decrypt stream, file or bytes
         if (mContentUri != null) {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_STREAM);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_STREAM);
 
-            data.putParcelable(ApgService.PROVIDER_URI, mContentUri);
+            data.putParcelable(ApgIntentService.PROVIDER_URI, mContentUri);
         } else if (mDecryptTarget == Id.target.file) {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_FILE);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_FILE);
 
             Log.d(Constants.TAG, "mInputFilename=" + mInputFilename + ", mOutputFilename="
                     + mOutputFilename);
 
-            data.putString(ApgService.INPUT_FILE, mInputFilename);
-            data.putString(ApgService.OUTPUT_FILE, mOutputFilename);
+            data.putString(ApgIntentService.INPUT_FILE, mInputFilename);
+            data.putString(ApgIntentService.OUTPUT_FILE, mOutputFilename);
         } else {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_BYTES);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_BYTES);
 
-            if (mData != null) {
-                data.putByteArray(ApgService.CIPHERTEXT_BYTES, mData);
+            if (mDataBytes != null) {
+                data.putByteArray(ApgIntentService.CIPHERTEXT_BYTES, mDataBytes);
             } else {
                 String message = mMessage.getText().toString();
-                data.putByteArray(ApgService.CIPHERTEXT_BYTES, message.getBytes());
+                data.putByteArray(ApgIntentService.CIPHERTEXT_BYTES, message.getBytes());
             }
         }
 
-        data.putLong(ApgService.SECRET_KEY_ID, getSecretKeyId());
+        data.putLong(ApgIntentService.SECRET_KEY_ID, mSecretKeyId);
 
-        data.putBoolean(ApgService.SIGNED_ONLY, mSignedOnly);
-        data.putBoolean(ApgService.LOOKUP_UNKNOWN_KEY, mLookupUnknownKey);
-        data.putBoolean(ApgService.RETURN_BYTES, mReturnBinary);
-        data.putBoolean(ApgService.ASSUME_SYMMETRIC, mAssumeSymmetricEncryption);
+        data.putBoolean(ApgIntentService.SIGNED_ONLY, mSignedOnly);
+        data.putBoolean(ApgIntentService.LOOKUP_UNKNOWN_KEY, mLookupUnknownKey);
+        data.putBoolean(ApgIntentService.RETURN_BYTES, mReturnBinary);
+        data.putBoolean(ApgIntentService.ASSUME_SYMMETRIC, mAssumeSymmetricEncryption);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after encrypting is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_decrypting,
-                ProgressDialog.STYLE_HORIZONTAL) {
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this,
+                R.string.progress_decrypting, ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get returned data bundle
                     Bundle returnData = message.getData();
 
                     // if key is unknown show lookup dialog
-                    if (returnData.getBoolean(ApgService.RESULT_SIGNATURE_LOOKUP_KEY)
+                    if (returnData.getBoolean(ApgIntentService.RESULT_SIGNATURE_LOOKUP_KEY)
                             && mLookupUnknownKey) {
                         mUnknownSignatureKeyId = returnData
-                                .getLong(ApgService.RESULT_SIGNATURE_KEY_ID);
+                                .getLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID);
                         lookupUnknownKey(mUnknownSignatureKeyId);
                         return;
                     }
@@ -822,7 +813,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
                     switch (mDecryptTarget) {
                     case Id.target.message:
                         String decryptedMessage = returnData
-                                .getString(ApgService.RESULT_DECRYPTED_MESSAGE);
+                                .getString(ApgIntentService.RESULT_DECRYPTED_STRING);
                         mMessage.setText(decryptedMessage);
                         mMessage.setHorizontallyScrolling(false);
                         mReplyEnabled = false;
@@ -846,9 +837,11 @@ public class DecryptActivity extends SherlockFragmentActivity {
 
                     }
 
-                    if (returnData.getBoolean(ApgService.RESULT_SIGNATURE)) {
-                        String userId = returnData.getString(ApgService.RESULT_SIGNATURE_USER_ID);
-                        mSignatureKeyId = returnData.getLong(ApgService.RESULT_SIGNATURE_KEY_ID);
+                    if (returnData.getBoolean(ApgIntentService.RESULT_SIGNATURE)) {
+                        String userId = returnData
+                                .getString(ApgIntentService.RESULT_SIGNATURE_USER_ID);
+                        mSignatureKeyId = returnData
+                                .getLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID);
                         mUserIdRest
                                 .setText("id: " + PGPHelper.getSmallFingerPrint(mSignatureKeyId));
                         if (userId == null) {
@@ -861,9 +854,9 @@ public class DecryptActivity extends SherlockFragmentActivity {
                         }
                         mUserId.setText(userId);
 
-                        if (returnData.getBoolean(ApgService.RESULT_SIGNATURE_SUCCESS)) {
+                        if (returnData.getBoolean(ApgIntentService.RESULT_SIGNATURE_SUCCESS)) {
                             mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
-                        } else if (returnData.getBoolean(ApgService.RESULT_SIGNATURE_UNKNOWN)) {
+                        } else if (returnData.getBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN)) {
                             mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
                             Toast.makeText(DecryptActivity.this,
                                     R.string.unknownSignatureKeyTouchToLookUp, Toast.LENGTH_LONG)
@@ -879,7 +872,7 @@ public class DecryptActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/EditKeyActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/EditKeyActivity.java
index f781f1ac1..96bd0ea5e 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/EditKeyActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/EditKeyActivity.java
@@ -26,8 +26,8 @@ import org.thialfihar.android.apg.helper.PGPHelper;
 import org.thialfihar.android.apg.helper.PGPMain;
 import org.thialfihar.android.apg.helper.PGPConversionHelper;
 import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.ui.dialog.SetPassphraseDialogFragment;
 import org.thialfihar.android.apg.ui.widget.KeyEditor;
 import org.thialfihar.android.apg.ui.widget.SectionView;
@@ -224,32 +224,32 @@ public class EditKeyActivity extends SherlockFragmentActivity {
                     mBuildLayout = false;
 
                     // Send all information needed to service generate keys in other thread
-                    Intent serviceIntent = new Intent(this, ApgService.class);
-                    serviceIntent.putExtra(ApgService.EXTRA_ACTION,
-                            ApgService.ACTION_GENERATE_DEFAULT_RSA_KEYS);
+                    Intent serviceIntent = new Intent(this, ApgIntentService.class);
+                    serviceIntent.putExtra(ApgIntentService.EXTRA_ACTION,
+                            ApgIntentService.ACTION_GENERATE_DEFAULT_RSA_KEYS);
 
                     // fill values for this action
                     Bundle data = new Bundle();
-                    data.putString(ApgService.SYMMETRIC_PASSPHRASE, mCurrentPassPhrase);
+                    data.putString(ApgIntentService.SYMMETRIC_PASSPHRASE, mCurrentPassPhrase);
 
-                    serviceIntent.putExtra(ApgService.EXTRA_DATA, data);
+                    serviceIntent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
                     // Message is received after generating is done in ApgService
-                    ApgServiceHandler saveHandler = new ApgServiceHandler(this,
+                    ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this,
                             R.string.progress_generating, ProgressDialog.STYLE_SPINNER) {
                         public void handleMessage(Message message) {
                             // handle messages by standard ApgHandler first
                             super.handleMessage(message);
 
-                            if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                            if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                                 // get new key from data bundle returned from service
                                 Bundle data = message.getData();
                                 PGPSecretKeyRing masterKeyRing = (PGPSecretKeyRing) PGPConversionHelper
                                         .BytesToPGPKeyRing(data
-                                                .getByteArray(ApgService.RESULT_NEW_KEY));
+                                                .getByteArray(ApgIntentService.RESULT_NEW_KEY));
                                 PGPSecretKeyRing subKeyRing = (PGPSecretKeyRing) PGPConversionHelper
                                         .BytesToPGPKeyRing(data
-                                                .getByteArray(ApgService.RESULT_NEW_KEY2));
+                                                .getByteArray(ApgIntentService.RESULT_NEW_KEY2));
 
                                 // add master key
                                 @SuppressWarnings("unchecked")
@@ -271,7 +271,7 @@ public class EditKeyActivity extends SherlockFragmentActivity {
 
                     // Create a new Messenger for the communication back
                     Messenger messenger = new Messenger(saveHandler);
-                    serviceIntent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+                    serviceIntent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
                     saveHandler.showProgressDialog(this);
 
@@ -412,30 +412,30 @@ public class EditKeyActivity extends SherlockFragmentActivity {
             }
 
             // Send all information needed to service to edit key in other thread
-            Intent intent = new Intent(this, ApgService.class);
+            Intent intent = new Intent(this, ApgIntentService.class);
 
-            intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_SAVE_KEYRING);
+            intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_SAVE_KEYRING);
 
             // fill values for this action
             Bundle data = new Bundle();
-            data.putString(ApgService.CURRENT_PASSPHRASE, mCurrentPassPhrase);
-            data.putString(ApgService.NEW_PASSPHRASE, mNewPassPhrase);
-            data.putStringArrayList(ApgService.USER_IDS, getUserIds(mUserIdsView));
+            data.putString(ApgIntentService.CURRENT_PASSPHRASE, mCurrentPassPhrase);
+            data.putString(ApgIntentService.NEW_PASSPHRASE, mNewPassPhrase);
+            data.putStringArrayList(ApgIntentService.USER_IDS, getUserIds(mUserIdsView));
             ArrayList<PGPSecretKey> keys = getKeys(mKeysView);
-            data.putByteArray(ApgService.KEYS, PGPConversionHelper.PGPSecretKeyListToBytes(keys));
-            data.putIntegerArrayList(ApgService.KEYS_USAGES, getKeysUsages(mKeysView));
-            data.putLong(ApgService.MASTER_KEY_ID, getMasterKeyId());
+            data.putByteArray(ApgIntentService.KEYS, PGPConversionHelper.PGPSecretKeyListToBytes(keys));
+            data.putIntegerArrayList(ApgIntentService.KEYS_USAGES, getKeysUsages(mKeysView));
+            data.putLong(ApgIntentService.MASTER_KEY_ID, getMasterKeyId());
 
-            intent.putExtra(ApgService.EXTRA_DATA, data);
+            intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
             // Message is received after saving is done in ApgService
-            ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_saving,
+            ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_saving,
                     ProgressDialog.STYLE_HORIZONTAL) {
                 public void handleMessage(Message message) {
                     // handle messages by standard ApgHandler first
                     super.handleMessage(message);
 
-                    if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                    if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                         finish();
                     }
                 };
@@ -443,7 +443,7 @@ public class EditKeyActivity extends SherlockFragmentActivity {
 
             // Create a new Messenger for the communication back
             Messenger messenger = new Messenger(saveHandler);
-            intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+            intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
             saveHandler.showProgressDialog(this);
 
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/EncryptActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/EncryptActivity.java
index 65610f688..29b1ab86a 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/EncryptActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/EncryptActivity.java
@@ -29,8 +29,8 @@ import org.thialfihar.android.apg.helper.PGPHelper;
 import org.thialfihar.android.apg.helper.PGPMain;
 import org.thialfihar.android.apg.helper.Preferences;
 import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.service.PassphraseCacheService;
 import org.thialfihar.android.apg.ui.dialog.DeleteFileDialogFragment;
 import org.thialfihar.android.apg.ui.dialog.FileDialogFragment;
@@ -768,14 +768,13 @@ public class EncryptActivity extends SherlockFragmentActivity {
 
     private void encryptStart() {
         // Send all information needed to service to edit key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        boolean useAsciiArmour = true;
+        boolean useAsciiArmor = true;
         long encryptionKeyIds[] = null;
-        long signatureKeyId = Id.key.none;
         int compressionId = 0;
         boolean signOnly = false;
 
@@ -786,78 +785,76 @@ public class EncryptActivity extends SherlockFragmentActivity {
                 passPhrase = null;
             }
 
-            data.putString(ApgService.SYMMETRIC_PASSPHRASE, passPhrase);
+            data.putString(ApgIntentService.SYMMETRIC_PASSPHRASE, passPhrase);
         } else {
             encryptionKeyIds = mEncryptionKeyIds;
-            signatureKeyId = getSecretKeyId();
             signOnly = (mEncryptionKeyIds == null || mEncryptionKeyIds.length == 0);
         }
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_ENCRYPT_SIGN);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_ENCRYPT_SIGN);
 
         // choose default settings, target and data bundle by target
         if (mContentUri != null) {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_STREAM);
-            data.putParcelable(ApgService.PROVIDER_URI, mContentUri);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_STREAM);
+            data.putParcelable(ApgIntentService.PROVIDER_URI, mContentUri);
 
         } else if (mEncryptTarget == Id.target.file) {
-            useAsciiArmour = mAsciiArmour.isChecked();
+            useAsciiArmor = mAsciiArmour.isChecked();
             compressionId = ((Choice) mFileCompression.getSelectedItem()).getId();
 
-            data.putInt(ApgService.TARGET, ApgService.TARGET_FILE);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_FILE);
 
             Log.d(Constants.TAG, "mInputFilename=" + mInputFilename + ", mOutputFilename="
                     + mOutputFilename);
 
-            data.putString(ApgService.INPUT_FILE, mInputFilename);
-            data.putString(ApgService.OUTPUT_FILE, mOutputFilename);
+            data.putString(ApgIntentService.INPUT_FILE, mInputFilename);
+            data.putString(ApgIntentService.OUTPUT_FILE, mOutputFilename);
 
         } else {
-            useAsciiArmour = true;
+            useAsciiArmor = true;
             compressionId = Preferences.getPreferences(this).getDefaultMessageCompression();
 
-            data.putInt(ApgService.TARGET, ApgService.TARGET_BYTES);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_BYTES);
 
             if (mData != null) {
-                data.putByteArray(ApgService.MESSAGE_BYTES, mData);
+                data.putByteArray(ApgIntentService.MESSAGE_BYTES, mData);
             } else {
                 String message = mMessage.getText().toString();
                 if (signOnly && !mReturnResult) {
                     fixBadCharactersForGmail(message);
                 }
-                data.putByteArray(ApgService.MESSAGE_BYTES, message.getBytes());
+                data.putByteArray(ApgIntentService.MESSAGE_BYTES, message.getBytes());
             }
         }
 
         if (mOverrideAsciiArmour) {
-            useAsciiArmour = mAsciiArmourDemand;
+            useAsciiArmor = mAsciiArmourDemand;
         }
 
-        data.putLong(ApgService.SECRET_KEY_ID, getSecretKeyId());
-        data.putBoolean(ApgService.USE_ASCII_AMOR, useAsciiArmour);
-        data.putLongArray(ApgService.ENCRYPTION_KEYS_IDS, encryptionKeyIds);
-        data.putLong(ApgService.SIGNATURE_KEY_ID, signatureKeyId);
-        data.putInt(ApgService.COMPRESSION_ID, compressionId);
-        data.putBoolean(ApgService.GENERATE_SIGNATURE, mGenerateSignature);
-        data.putBoolean(ApgService.SIGN_ONLY, signOnly);
+        data.putLong(ApgIntentService.SECRET_KEY_ID, getSecretKeyId());
+        data.putBoolean(ApgIntentService.USE_ASCII_AMOR, useAsciiArmor);
+        data.putLongArray(ApgIntentService.ENCRYPTION_KEYS_IDS, encryptionKeyIds);
+        data.putInt(ApgIntentService.COMPRESSION_ID, compressionId);
+        data.putBoolean(ApgIntentService.GENERATE_SIGNATURE, mGenerateSignature);
+        data.putBoolean(ApgIntentService.SIGN_ONLY, signOnly);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after encrypting is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_encrypting,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_encrypting,
                 ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get returned data bundle
                     Bundle data = message.getData();
 
                     String output;
                     switch (mEncryptTarget) {
                     case Id.target.clipboard:
-                        output = data.getString(ApgService.RESULT_ENCRYPTED_MESSAGE);
+                        output = data.getString(ApgIntentService.RESULT_ENCRYPTED_STRING);
                         Log.d(Constants.TAG, "output: " + output);
                         Compatibility.copyToClipboard(EncryptActivity.this, output);
                         Toast.makeText(EncryptActivity.this,
@@ -874,7 +871,7 @@ public class EncryptActivity extends SherlockFragmentActivity {
                             return;
                         }
 
-                        output = data.getString(ApgService.RESULT_ENCRYPTED_MESSAGE);
+                        output = data.getString(ApgIntentService.RESULT_ENCRYPTED_STRING);
                         Log.d(Constants.TAG, "output: " + output);
 
                         Intent emailIntent = new Intent(Intent.ACTION_SEND);
@@ -913,7 +910,7 @@ public class EncryptActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/ImportFromQRCodeActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/ImportFromQRCodeActivity.java
index 4c5952b99..aac1fd15b 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/ImportFromQRCodeActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/ImportFromQRCodeActivity.java
@@ -20,8 +20,8 @@ package org.thialfihar.android.apg.ui;
 import org.thialfihar.android.apg.Constants;
 import org.thialfihar.android.apg.Id;
 import org.thialfihar.android.apg.helper.OtherHelper;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.R;
 
 import android.app.AlertDialog;
@@ -157,34 +157,34 @@ public class ImportFromQRCodeActivity extends SherlockFragmentActivity {
 
         if (mScannedContent != null) {
             // Send all information needed to service to import key in other thread
-            Intent intent = new Intent(this, ApgService.class);
+            Intent intent = new Intent(this, ApgIntentService.class);
 
-            intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_IMPORT_KEY);
+            intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_IMPORT_KEY);
 
             // fill values for this action
             Bundle data = new Bundle();
 
-            data.putInt(ApgService.IMPORT_KEY_TYPE, Id.type.public_key);
+            data.putInt(ApgIntentService.IMPORT_KEY_TYPE, Id.type.public_key);
 
-            data.putInt(ApgService.TARGET, ApgService.TARGET_BYTES);
-            data.putByteArray(ApgService.IMPORT_BYTES, mScannedContent.getBytes());
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_BYTES);
+            data.putByteArray(ApgIntentService.IMPORT_BYTES, mScannedContent.getBytes());
 
-            intent.putExtra(ApgService.EXTRA_DATA, data);
+            intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
             // Message is received after importing is done in ApgService
-            ApgServiceHandler saveHandler = new ApgServiceHandler(this,
+            ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this,
                     R.string.progress_importing, ProgressDialog.STYLE_HORIZONTAL) {
                 public void handleMessage(Message message) {
                     // handle messages by standard ApgHandler first
                     super.handleMessage(message);
 
-                    if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                    if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                         // get returned data bundle
                         Bundle returnData = message.getData();
 
-                        int added = returnData.getInt(ApgService.RESULT_IMPORT_ADDED);
-                        int updated = returnData.getInt(ApgService.RESULT_IMPORT_UPDATED);
-                        int bad = returnData.getInt(ApgService.RESULT_IMPORT_BAD);
+                        int added = returnData.getInt(ApgIntentService.RESULT_IMPORT_ADDED);
+                        int updated = returnData.getInt(ApgIntentService.RESULT_IMPORT_UPDATED);
+                        int bad = returnData.getInt(ApgIntentService.RESULT_IMPORT_BAD);
                         String toastMessage;
                         if (added > 0 && updated > 0) {
                             toastMessage = getString(R.string.keysAddedAndUpdated, added, updated);
@@ -221,7 +221,7 @@ public class ImportFromQRCodeActivity extends SherlockFragmentActivity {
 
             // Create a new Messenger for the communication back
             Messenger messenger = new Messenger(saveHandler);
-            intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+            intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
             // show progress dialog
             saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/KeyListActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/KeyListActivity.java
index 12567a9bd..3adae94a9 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/KeyListActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/KeyListActivity.java
@@ -20,8 +20,8 @@ package org.thialfihar.android.apg.ui;
 import org.thialfihar.android.apg.Constants;
 import org.thialfihar.android.apg.Id;
 import org.thialfihar.android.apg.R;
-import org.thialfihar.android.apg.service.ApgService;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
 import org.thialfihar.android.apg.ui.dialog.DeleteFileDialogFragment;
 import org.thialfihar.android.apg.ui.dialog.DeleteKeyDialogFragment;
 import org.thialfihar.android.apg.ui.dialog.FileDialogFragment;
@@ -302,39 +302,39 @@ public class KeyListActivity extends SherlockFragmentActivity {
         Log.d(Constants.TAG, "importKeys started");
 
         // Send all information needed to service to import key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_IMPORT_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_IMPORT_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        data.putInt(ApgService.IMPORT_KEY_TYPE, mKeyType);
+        data.putInt(ApgIntentService.IMPORT_KEY_TYPE, mKeyType);
 
         if (mImportData != null) {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_BYTES);
-            data.putByteArray(ApgService.IMPORT_BYTES, mImportData.getBytes());
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_BYTES);
+            data.putByteArray(ApgIntentService.IMPORT_BYTES, mImportData.getBytes());
         } else {
-            data.putInt(ApgService.TARGET, ApgService.TARGET_FILE);
-            data.putString(ApgService.IMPORT_FILENAME, mImportFilename);
+            data.putInt(ApgIntentService.TARGET, ApgIntentService.TARGET_FILE);
+            data.putString(ApgIntentService.IMPORT_FILENAME, mImportFilename);
         }
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after importing is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_importing,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_importing,
                 ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get returned data bundle
                     Bundle returnData = message.getData();
 
-                    int added = returnData.getInt(ApgService.RESULT_IMPORT_ADDED);
-                    int updated = returnData.getInt(ApgService.RESULT_IMPORT_UPDATED);
-                    int bad = returnData.getInt(ApgService.RESULT_IMPORT_BAD);
+                    int added = returnData.getInt(ApgIntentService.RESULT_IMPORT_ADDED);
+                    int updated = returnData.getInt(ApgIntentService.RESULT_IMPORT_UPDATED);
+                    int bad = returnData.getInt(ApgIntentService.RESULT_IMPORT_BAD);
                     String toastMessage;
                     if (added > 0 && updated > 0) {
                         toastMessage = getString(R.string.keysAddedAndUpdated, added, updated);
@@ -376,7 +376,7 @@ public class KeyListActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
@@ -395,36 +395,36 @@ public class KeyListActivity extends SherlockFragmentActivity {
         Log.d(Constants.TAG, "exportKeys started");
 
         // Send all information needed to service to export key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_EXPORT_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_EXPORT_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        data.putString(ApgService.EXPORT_FILENAME, mExportFilename);
-        data.putInt(ApgService.EXPORT_KEY_TYPE, mKeyType);
+        data.putString(ApgIntentService.EXPORT_FILENAME, mExportFilename);
+        data.putInt(ApgIntentService.EXPORT_KEY_TYPE, mKeyType);
 
         if (keyRingId == -1) {
-            data.putBoolean(ApgService.EXPORT_ALL, true);
+            data.putBoolean(ApgIntentService.EXPORT_ALL, true);
         } else {
-            data.putLong(ApgService.EXPORT_KEY_RING_ID, keyRingId);
+            data.putLong(ApgIntentService.EXPORT_KEY_RING_ID, keyRingId);
         }
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after exporting is done in ApgService
-        ApgServiceHandler exportHandler = new ApgServiceHandler(this, R.string.progress_exporting,
+        ApgIntentServiceHandler exportHandler = new ApgIntentServiceHandler(this, R.string.progress_exporting,
                 ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get returned data bundle
                     Bundle returnData = message.getData();
 
-                    int exported = returnData.getInt(ApgService.RESULT_EXPORT);
+                    int exported = returnData.getInt(ApgIntentService.RESULT_EXPORT);
                     String toastMessage;
                     if (exported == 1) {
                         toastMessage = getString(R.string.keyExported);
@@ -441,7 +441,7 @@ public class KeyListActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(exportHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         exportHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/KeyListPublicFragment.java b/org_apg/src/org/thialfihar/android/apg/ui/KeyListPublicFragment.java
index 6bf55a8c1..e1a93602c 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/KeyListPublicFragment.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/KeyListPublicFragment.java
@@ -90,7 +90,7 @@ public class KeyListPublicFragment extends KeyListFragment implements
         switch (item.getItemId()) {
         case Id.menu.update:
             long updateKeyId = 0;
-            PGPPublicKeyRing updateKeyRing = ProviderHelper.getPGPPublicKeyRing(mKeyListActivity,
+            PGPPublicKeyRing updateKeyRing = ProviderHelper.getPGPPublicKeyRingByRowId(mKeyListActivity,
                     keyRingRowId);
             if (updateKeyRing != null) {
                 updateKeyId = PGPHelper.getMasterKey(updateKeyRing).getKeyID();
@@ -119,7 +119,7 @@ public class KeyListPublicFragment extends KeyListFragment implements
 
         case Id.menu.signKey:
             long keyId = 0;
-            PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRing(mKeyListActivity,
+            PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByRowId(mKeyListActivity,
                     keyRingRowId);
             if (signKeyRing != null) {
                 keyId = PGPHelper.getMasterKey(signKeyRing).getKeyID();
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/KeyServerQueryActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/KeyServerQueryActivity.java
index 98b6eccf0..7cd54bf32 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/KeyServerQueryActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/KeyServerQueryActivity.java
@@ -25,8 +25,8 @@ import org.thialfihar.android.apg.Constants;
 import org.thialfihar.android.apg.Id;
 import org.thialfihar.android.apg.helper.PGPHelper;
 import org.thialfihar.android.apg.helper.Preferences;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.util.Log;
 import org.thialfihar.android.apg.util.KeyServer.KeyInfo;
 
@@ -166,42 +166,42 @@ public class KeyServerQueryActivity extends SherlockFragmentActivity {
         Log.d(Constants.TAG, "start search with service");
 
         // Send all information needed to service to query keys in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_QUERY_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_QUERY_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
         String server = (String) mKeyServer.getSelectedItem();
-        data.putString(ApgService.QUERY_KEY_SERVER, server);
+        data.putString(ApgIntentService.QUERY_KEY_SERVER, server);
 
-        data.putInt(ApgService.QUERY_KEY_TYPE, mQueryType);
+        data.putInt(ApgIntentService.QUERY_KEY_TYPE, mQueryType);
 
         if (mQueryType == Id.keyserver.search) {
-            data.putString(ApgService.QUERY_KEY_STRING, mQueryString);
+            data.putString(ApgIntentService.QUERY_KEY_STRING, mQueryString);
         } else if (mQueryType == Id.keyserver.get) {
-            data.putLong(ApgService.QUERY_KEY_ID, mQueryId);
+            data.putLong(ApgIntentService.QUERY_KEY_ID, mQueryId);
         }
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after querying is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_querying,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_querying,
                 ProgressDialog.STYLE_SPINNER) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get returned data bundle
                     Bundle returnData = message.getData();
 
                     if (mQueryType == Id.keyserver.search) {
                         mSearchResult = returnData
-                                .getParcelableArrayList(ApgService.RESULT_QUERY_KEY_SEARCH_RESULT);
+                                .getParcelableArrayList(ApgIntentService.RESULT_QUERY_KEY_SEARCH_RESULT);
                     } else if (mQueryType == Id.keyserver.get) {
-                        mKeyData = returnData.getString(ApgService.RESULT_QUERY_KEY_KEY_DATA);
+                        mKeyData = returnData.getString(ApgIntentService.RESULT_QUERY_KEY_KEY_DATA);
                     }
 
                     // TODO: IMPROVE CODE!!! some global variables can be avoided!!!
@@ -240,7 +240,7 @@ public class KeyServerQueryActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/KeyServerUploadActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/KeyServerUploadActivity.java
index 8470488a2..db907ed48 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/KeyServerUploadActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/KeyServerUploadActivity.java
@@ -20,8 +20,8 @@ package org.thialfihar.android.apg.ui;
 import org.thialfihar.android.apg.Constants;
 import org.thialfihar.android.apg.R;
 import org.thialfihar.android.apg.helper.Preferences;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 
 import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.actionbarsherlock.view.MenuItem;
@@ -102,29 +102,29 @@ public class KeyServerUploadActivity extends SherlockFragmentActivity {
 
     private void uploadKey() {
         // Send all information needed to service to upload key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_UPLOAD_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_UPLOAD_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
         int keyRingId = getIntent().getIntExtra(EXTRA_KEYRING_ROW_ID, -1);
-        data.putInt(ApgService.UPLOAD_KEY_KEYRING_ROW_ID, keyRingId);
+        data.putInt(ApgIntentService.UPLOAD_KEY_KEYRING_ROW_ID, keyRingId);
 
         String server = (String) keyServer.getSelectedItem();
-        data.putString(ApgService.UPLOAD_KEY_SERVER, server);
+        data.putString(ApgIntentService.UPLOAD_KEY_SERVER, server);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after uploading is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_exporting,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_exporting,
                 ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
 
                     Toast.makeText(KeyServerUploadActivity.this, R.string.keySendSuccess,
                             Toast.LENGTH_SHORT).show();
@@ -135,7 +135,7 @@ public class KeyServerUploadActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/SignKeyActivity.java b/org_apg/src/org/thialfihar/android/apg/ui/SignKeyActivity.java
index 9c6c1d50f..b970cb3d3 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/SignKeyActivity.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/SignKeyActivity.java
@@ -26,8 +26,8 @@ import org.thialfihar.android.apg.R;
 import org.thialfihar.android.apg.helper.PGPMain;
 import org.thialfihar.android.apg.helper.Preferences;
 import org.thialfihar.android.apg.provider.ProviderHelper;
-import org.thialfihar.android.apg.service.ApgService;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
 import org.thialfihar.android.apg.service.PassphraseCacheService;
 import org.thialfihar.android.apg.ui.dialog.PassphraseDialogFragment;
 
@@ -196,26 +196,26 @@ public class SignKeyActivity extends SherlockFragmentActivity {
      */
     private void startSigning() {
         // Send all information needed to service to sign key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_SIGN_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_SIGN_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        data.putLong(ApgService.SIGN_KEY_MASTER_KEY_ID, mMasterKeyId);
-        data.putLong(ApgService.SIGN_KEY_PUB_KEY_ID, mPubKeyId);
+        data.putLong(ApgIntentService.SIGN_KEY_MASTER_KEY_ID, mMasterKeyId);
+        data.putLong(ApgIntentService.SIGN_KEY_PUB_KEY_ID, mPubKeyId);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after signing is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_signing,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_signing,
                 ProgressDialog.STYLE_SPINNER) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
 
                     Toast.makeText(SignKeyActivity.this, R.string.keySignSuccess,
                             Toast.LENGTH_SHORT).show();
@@ -236,7 +236,7 @@ public class SignKeyActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
@@ -247,29 +247,29 @@ public class SignKeyActivity extends SherlockFragmentActivity {
 
     private void uploadKey() {
         // Send all information needed to service to upload key in other thread
-        Intent intent = new Intent(this, ApgService.class);
+        Intent intent = new Intent(this, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_UPLOAD_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_UPLOAD_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
 
-        data.putLong(ApgService.UPLOAD_KEY_KEYRING_ROW_ID, mPubKeyId);
+        data.putLong(ApgIntentService.UPLOAD_KEY_KEYRING_ROW_ID, mPubKeyId);
 
         Spinner keyServer = (Spinner) findViewById(R.id.keyServer);
         String server = (String) keyServer.getSelectedItem();
-        data.putString(ApgService.UPLOAD_KEY_SERVER, server);
+        data.putString(ApgIntentService.UPLOAD_KEY_SERVER, server);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // Message is received after uploading is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(this, R.string.progress_exporting,
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(this, R.string.progress_exporting,
                 ProgressDialog.STYLE_HORIZONTAL) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
 
                     Toast.makeText(SignKeyActivity.this, R.string.keySendSuccess,
                             Toast.LENGTH_SHORT).show();
@@ -281,7 +281,7 @@ public class SignKeyActivity extends SherlockFragmentActivity {
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         // show progress dialog
         saveHandler.showProgressDialog(this);
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteFileDialogFragment.java b/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteFileDialogFragment.java
index 8d111fc02..311066389 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteFileDialogFragment.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteFileDialogFragment.java
@@ -17,8 +17,8 @@
 package org.thialfihar.android.apg.ui.dialog;
 
 import org.thialfihar.android.apg.R;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 
 import android.app.AlertDialog;
 import android.app.Dialog;
@@ -70,25 +70,25 @@ public class DeleteFileDialogFragment extends DialogFragment {
                 dismiss();
 
                 // Send all information needed to service to edit key in other thread
-                Intent intent = new Intent(activity, ApgService.class);
+                Intent intent = new Intent(activity, ApgIntentService.class);
 
                 // fill values for this action
                 Bundle data = new Bundle();
 
-                intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_DELETE_FILE_SECURELY);
-                data.putString(ApgService.DELETE_FILE, deleteFile);
-                intent.putExtra(ApgService.EXTRA_DATA, data);
+                intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_DELETE_FILE_SECURELY);
+                data.putString(ApgIntentService.DELETE_FILE, deleteFile);
+                intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
                 ProgressDialogFragment deletingDialog = ProgressDialogFragment.newInstance(
                         R.string.progress_deletingSecurely, ProgressDialog.STYLE_HORIZONTAL);
 
                 // Message is received after deleting is done in ApgService
-                ApgServiceHandler saveHandler = new ApgServiceHandler(activity, deletingDialog) {
+                ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(activity, deletingDialog) {
                     public void handleMessage(Message message) {
                         // handle messages by standard ApgHandler first
                         super.handleMessage(message);
 
-                        if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                        if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                             Toast.makeText(activity, R.string.fileDeleteSuccessful,
                                     Toast.LENGTH_SHORT).show();
                         }
@@ -97,7 +97,7 @@ public class DeleteFileDialogFragment extends DialogFragment {
 
                 // Create a new Messenger for the communication back
                 Messenger messenger = new Messenger(saveHandler);
-                intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+                intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
                 // show progress dialog
                 deletingDialog.show(activity.getSupportFragmentManager(), "deletingDialog");
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteKeyDialogFragment.java b/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteKeyDialogFragment.java
index 3e2de6a67..bb5271ce7 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteKeyDialogFragment.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/dialog/DeleteKeyDialogFragment.java
@@ -76,11 +76,11 @@ public class DeleteKeyDialogFragment extends DialogFragment {
         String userId = activity.getString(R.string.unknownUserId);
 
         if (keyType == Id.type.public_key) {
-            PGPPublicKeyRing keyRing = ProviderHelper.getPGPPublicKeyRing(activity,
+            PGPPublicKeyRing keyRing = ProviderHelper.getPGPPublicKeyRingByRowId(activity,
                     deleteKeyRingRowId);
             userId = PGPHelper.getMainUserIdSafe(activity, PGPHelper.getMasterKey(keyRing));
         } else {
-            PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRing(activity,
+            PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRingByRowId(activity,
                     deleteKeyRingRowId);
             userId = PGPHelper.getMainUserIdSafe(activity, PGPHelper.getMasterKey(keyRing));
         }
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/dialog/PassphraseDialogFragment.java b/org_apg/src/org/thialfihar/android/apg/ui/dialog/PassphraseDialogFragment.java
index de2462b39..fb8f4b6d1 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/dialog/PassphraseDialogFragment.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/dialog/PassphraseDialogFragment.java
@@ -104,9 +104,8 @@ public class PassphraseDialogFragment extends DialogFragment implements OnEditor
     private static boolean hasPassphrase(Context context, long secretKeyId) {
         // check if the key has no passphrase
         try {
-            // TODO: by master key id???
             PGPSecretKey secretKey = PGPHelper.getMasterKey(ProviderHelper
-                    .getPGPSecretKeyRingByMasterKeyId(context, secretKeyId));
+                    .getPGPSecretKeyRingByKeyId(context, secretKeyId));
             // PGPSecretKey secretKey =
             // PGPHelper.getMasterKey(PGPMain.getSecretKeyRing(secretKeyId));
 
diff --git a/org_apg/src/org/thialfihar/android/apg/ui/widget/SectionView.java b/org_apg/src/org/thialfihar/android/apg/ui/widget/SectionView.java
index 881aa769e..45fbbaba1 100644
--- a/org_apg/src/org/thialfihar/android/apg/ui/widget/SectionView.java
+++ b/org_apg/src/org/thialfihar/android/apg/ui/widget/SectionView.java
@@ -20,8 +20,8 @@ import org.spongycastle.openpgp.PGPSecretKey;
 import org.spongycastle.openpgp.PGPSecretKeyRing;
 import org.thialfihar.android.apg.Id;
 import org.thialfihar.android.apg.helper.PGPConversionHelper;
-import org.thialfihar.android.apg.service.ApgServiceHandler;
-import org.thialfihar.android.apg.service.ApgService;
+import org.thialfihar.android.apg.service.ApgIntentServiceHandler;
+import org.thialfihar.android.apg.service.ApgIntentService;
 import org.thialfihar.android.apg.service.PassphraseCacheService;
 import org.thialfihar.android.apg.ui.dialog.ProgressDialogFragment;
 import org.thialfihar.android.apg.ui.widget.Editor.EditorListener;
@@ -249,9 +249,9 @@ public class SectionView extends LinearLayout implements OnClickListener, Editor
 
     private void createKey() {
         // Send all information needed to service to edit key in other thread
-        Intent intent = new Intent(mActivity, ApgService.class);
+        Intent intent = new Intent(mActivity, ApgIntentService.class);
 
-        intent.putExtra(ApgService.EXTRA_ACTION, ApgService.ACTION_GENERATE_KEY);
+        intent.putExtra(ApgIntentService.EXTRA_ACTION, ApgIntentService.ACTION_GENERATE_KEY);
 
         // fill values for this action
         Bundle data = new Bundle();
@@ -262,32 +262,32 @@ public class SectionView extends LinearLayout implements OnClickListener, Editor
             passPhrase = PassphraseCacheService
                     .getCachedPassphrase(mActivity, masterKey.getKeyID());
 
-            data.putByteArray(ApgService.MASTER_KEY,
+            data.putByteArray(ApgIntentService.MASTER_KEY,
                     PGPConversionHelper.PGPSecretKeyToBytes(masterKey));
         } else {
             passPhrase = "";
         }
-        data.putString(ApgService.SYMMETRIC_PASSPHRASE, passPhrase);
-        data.putInt(ApgService.ALGORITHM, mNewKeyAlgorithmChoice.getId());
-        data.putInt(ApgService.KEY_SIZE, mNewKeySize);
+        data.putString(ApgIntentService.SYMMETRIC_PASSPHRASE, passPhrase);
+        data.putInt(ApgIntentService.ALGORITHM, mNewKeyAlgorithmChoice.getId());
+        data.putInt(ApgIntentService.KEY_SIZE, mNewKeySize);
 
-        intent.putExtra(ApgService.EXTRA_DATA, data);
+        intent.putExtra(ApgIntentService.EXTRA_DATA, data);
 
         // show progress dialog
         mGeneratingDialog = ProgressDialogFragment.newInstance(R.string.progress_generating,
                 ProgressDialog.STYLE_SPINNER);
 
         // Message is received after generating is done in ApgService
-        ApgServiceHandler saveHandler = new ApgServiceHandler(mActivity, mGeneratingDialog) {
+        ApgIntentServiceHandler saveHandler = new ApgIntentServiceHandler(mActivity, mGeneratingDialog) {
             public void handleMessage(Message message) {
                 // handle messages by standard ApgHandler first
                 super.handleMessage(message);
 
-                if (message.arg1 == ApgServiceHandler.MESSAGE_OKAY) {
+                if (message.arg1 == ApgIntentServiceHandler.MESSAGE_OKAY) {
                     // get new key from data bundle returned from service
                     Bundle data = message.getData();
                     PGPSecretKeyRing newKeyRing = (PGPSecretKeyRing) PGPConversionHelper
-                            .BytesToPGPKeyRing(data.getByteArray(ApgService.RESULT_NEW_KEY));
+                            .BytesToPGPKeyRing(data.getByteArray(ApgIntentService.RESULT_NEW_KEY));
 
                     boolean isMasterKey = (mEditors.getChildCount() == 0);
 
@@ -317,7 +317,7 @@ public class SectionView extends LinearLayout implements OnClickListener, Editor
 
         // Create a new Messenger for the communication back
         Messenger messenger = new Messenger(saveHandler);
-        intent.putExtra(ApgService.EXTRA_MESSENGER, messenger);
+        intent.putExtra(ApgIntentService.EXTRA_MESSENGER, messenger);
 
         mGeneratingDialog.show(mActivity.getSupportFragmentManager(), "dialog");
 
diff --git a/org_apg_integration_demo/AndroidManifest.xml b/org_apg_integration_demo/AndroidManifest.xml
index 4656193f9..6fc5b1817 100644
--- a/org_apg_integration_demo/AndroidManifest.xml
+++ b/org_apg_integration_demo/AndroidManifest.xml
@@ -27,6 +27,10 @@
             android:name=".IntentDemoActivity"
             android:label="Intent Demo 1"
             android:windowSoftInputMode="stateHidden" />
+        <activity
+            android:name=".AidlDemoActivity"
+            android:label="Aidl Demo"
+            android:windowSoftInputMode="stateHidden" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/org_apg_integration_demo/res/layout/aidl_demo.xml b/org_apg_integration_demo/res/layout/aidl_demo.xml
new file mode 100644
index 000000000..59977869d
--- /dev/null
+++ b/org_apg_integration_demo/res/layout/aidl_demo.xml
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content" >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical" >
+
+        <Button
+            android:id="@+id/aidl_demo_create_new_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="createNewKeyOnClick"
+            android:text="Create new key" />
+
+        <Button
+            android:id="@+id/aidl_demo_select_secret_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="selectSecretKeyOnClick"
+            android:text="Select secret key" />
+
+        <Button
+            android:id="@+id/aidl_demo_select_encryption_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="selectEncryptionKeysOnClick"
+            android:text="Select encryption key(s)" />
+
+        <EditText
+            android:id="@+id/aidl_demo_message"
+            android:layout_width="match_parent"
+            android:layout_height="150dip"
+            android:text="message"
+            android:textAppearance="@android:style/TextAppearance.Small" />
+
+        <EditText
+            android:id="@+id/aidl_demo_ciphertext"
+            android:layout_width="match_parent"
+            android:layout_height="150dip"
+            android:text="ciphertext"
+            android:textAppearance="@android:style/TextAppearance.Small" />
+
+        <Button
+            android:id="@+id/aidl_demo_encrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="encryptOnClick"
+            android:text="Encrypt" />
+
+        <Button
+            android:id="@+id/aidl_demo_decrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="decryptOnClick"
+            android:text="Decrypt" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:text="APG Data:" />
+
+        <TextView
+            android:id="@+id/aidl_demo_data"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:minLines="10" />
+    </LinearLayout>
+
+</ScrollView>
\ No newline at end of file
diff --git a/org_apg_integration_demo/res/layout/intent_demo.xml b/org_apg_integration_demo/res/layout/intent_demo.xml
index 8d01b5a8b..3809f6ca4 100644
--- a/org_apg_integration_demo/res/layout/intent_demo.xml
+++ b/org_apg_integration_demo/res/layout/intent_demo.xml
@@ -12,21 +12,21 @@
             android:id="@+id/intent_demo_create_new_key"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:onClick="intentDemoCreateNewKeyOnClick"
+            android:onClick="createNewKeyOnClick"
             android:text="Create new key" />
 
         <Button
             android:id="@+id/intent_demo_select_secret_key"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:onClick="intentDemoSelectSecretKeyOnClick"
+            android:onClick="selectSecretKeyOnClick"
             android:text="Select secret key" />
 
         <Button
             android:id="@+id/intent_demo_select_encryption_key"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:onClick="intentDemoSelectEncryptionKeysOnClick"
+            android:onClick="selectEncryptionKeysOnClick"
             android:text="Select encryption key(s)" />
 
         <EditText
@@ -47,14 +47,14 @@
             android:id="@+id/intent_demo_encrypt"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:onClick="intentDemoEncryptOnClick"
+            android:onClick="encryptOnClick"
             android:text="Encrypt" />
 
         <Button
             android:id="@+id/intent_demo_decrypt"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:onClick="intentDemoDecryptOnClick"
+            android:onClick="decryptOnClick"
             android:text="Decrypt" />
 
         <TextView
diff --git a/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/AidlDemoActivity.java b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/AidlDemoActivity.java
new file mode 100644
index 000000000..f066e0957
--- /dev/null
+++ b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/AidlDemoActivity.java
@@ -0,0 +1,185 @@
+package org.thialfihar.android.apg.demo;
+
+import org.thialfihar.android.apg.integration.ApgData;
+import org.thialfihar.android.apg.integration.ApgIntentHelper;
+import org.thialfihar.android.apg.service.IApgEncryptDecryptHandler;
+import org.thialfihar.android.apg.service.IApgHelperHandler;
+import org.thialfihar.android.apg.service.IApgService;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class AidlDemoActivity extends Activity {
+    Activity mActivity;
+
+    TextView mMessageTextView;
+    TextView mCiphertextTextView;
+    TextView mDataTextView;
+
+    ApgIntentHelper mApgIntentHelper;
+    ApgData mApgData;
+
+    private IApgService service = null;
+    private ServiceConnection svcConn = new ServiceConnection() {
+        public void onServiceConnected(ComponentName className, IBinder binder) {
+            service = IApgService.Stub.asInterface(binder);
+        }
+
+        public void onServiceDisconnected(ComponentName className) {
+            service = null;
+        }
+    };
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setContentView(R.layout.aidl_demo);
+
+        mActivity = this;
+
+        mMessageTextView = (TextView) findViewById(R.id.aidl_demo_message);
+        mCiphertextTextView = (TextView) findViewById(R.id.aidl_demo_ciphertext);
+        mDataTextView = (TextView) findViewById(R.id.aidl_demo_data);
+
+        mApgIntentHelper = new ApgIntentHelper(mActivity);
+        mApgData = new ApgData();
+
+        bindService(new Intent("org.thialfihar.android.apg.service.IApgService"), svcConn,
+                Context.BIND_AUTO_CREATE);
+    }
+
+    public void encryptOnClick(View view) {
+        byte[] inputBytes = mMessageTextView.getText().toString().getBytes();
+
+        try {
+            service.encryptAsymmetric(inputBytes, null, true, 0, mApgData.getEncryptionKeys(), 7,
+                    encryptDecryptHandler);
+        } catch (RemoteException e) {
+            exceptionImplementation(-1, e.toString());
+        }
+    }
+
+    public void decryptOnClick(View view) {
+        byte[] inputBytes = mCiphertextTextView.getText().toString().getBytes();
+
+        try {
+            service.decryptAndVerifyAsymmetric(inputBytes, null, null, encryptDecryptHandler);
+        } catch (RemoteException e) {
+            exceptionImplementation(-1, e.toString());
+        }
+    }
+
+    private void updateView() {
+        if (mApgData.getDecryptedData() != null) {
+            mMessageTextView.setText(mApgData.getDecryptedData());
+        }
+        if (mApgData.getEncryptedData() != null) {
+            mCiphertextTextView.setText(mApgData.getEncryptedData());
+        }
+        mDataTextView.setText(mApgData.toString());
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        unbindService(svcConn);
+    }
+
+    private void exceptionImplementation(int exceptionId, String error) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("Exception!").setMessage(error).setPositiveButton("OK", null).show();
+    }
+
+    private final IApgEncryptDecryptHandler.Stub encryptDecryptHandler = new IApgEncryptDecryptHandler.Stub() {
+
+        @Override
+        public void onException(final int exceptionId, final String message) throws RemoteException {
+            runOnUiThread(new Runnable() {
+                public void run() {
+                    exceptionImplementation(exceptionId, message);
+                }
+            });
+        }
+
+        @Override
+        public void onSuccessEncrypt(final byte[] outputBytes, String outputUri)
+                throws RemoteException {
+            runOnUiThread(new Runnable() {
+                public void run() {
+                    mApgData.setEncryptedData(new String(outputBytes));
+                    updateView();
+                }
+            });
+        }
+
+        @Override
+        public void onSuccessDecrypt(final byte[] outputBytes, String outputUri, boolean signature,
+                long signatureKeyId, String signatureUserId, boolean signatureSuccess,
+                boolean signatureUnknown) throws RemoteException {
+            runOnUiThread(new Runnable() {
+                public void run() {
+                    mApgData.setDecryptedData(new String(outputBytes));
+                    updateView();
+                }
+            });
+
+        }
+
+    };
+
+    private final IApgHelperHandler.Stub helperHandler = new IApgHelperHandler.Stub() {
+
+        @Override
+        public void onException(final int exceptionId, final String message) throws RemoteException {
+            runOnUiThread(new Runnable() {
+                public void run() {
+                    exceptionImplementation(exceptionId, message);
+                }
+            });
+        }
+
+        @Override
+        public void onSuccessGetDecryptionKey(long arg0, boolean arg1) throws RemoteException {
+            // TODO Auto-generated method stub
+
+        }
+
+    };
+
+    /**
+     * Selection is done with Intents, not AIDL!
+     * 
+     * @param view
+     */
+    public void selectSecretKeyOnClick(View view) {
+        mApgIntentHelper.selectSecretKey();
+    }
+
+    public void selectEncryptionKeysOnClick(View view) {
+        mApgIntentHelper.selectEncryptionKeys("user@example.com");
+
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        // this updates the mApgData object to the result of the methods
+        boolean result = mApgIntentHelper.onActivityResult(requestCode, resultCode, data, mApgData);
+        if (result) {
+            updateView();
+        }
+
+        // continue with other activity results
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+}
diff --git a/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/BaseActivity.java b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/BaseActivity.java
index 821fc5a8d..3f46b2e4d 100644
--- a/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/BaseActivity.java
+++ b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/BaseActivity.java
@@ -24,7 +24,6 @@ import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceClickListener;
 import android.preference.PreferenceActivity;
-import android.widget.Toast;
 
 public class BaseActivity extends PreferenceActivity {
     private Activity mActivity;
@@ -60,7 +59,7 @@ public class BaseActivity extends PreferenceActivity {
         mAidlDemo.setOnPreferenceClickListener(new OnPreferenceClickListener() {
             @Override
             public boolean onPreferenceClick(Preference preference) {
-                Toast.makeText(mActivity, "Currently not implemented!", Toast.LENGTH_LONG).show();
+                startActivity(new Intent(mActivity, AidlDemoActivity.class));
 
                 return false;
             }
diff --git a/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/IntentDemoActivity.java b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/IntentDemoActivity.java
index 24aebb138..00f055fc1 100644
--- a/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/IntentDemoActivity.java
+++ b/org_apg_integration_demo/src/org/thialfihar/android/apg/demo/IntentDemoActivity.java
@@ -28,11 +28,12 @@ import android.widget.TextView;
 
 public class IntentDemoActivity extends Activity {
     Activity mActivity;
-    ApgIntentHelper mApgIntentHelper;
+
     TextView mMessageTextView;
     TextView mCiphertextTextView;
     TextView mDataTextView;
 
+    ApgIntentHelper mApgIntentHelper;
     ApgData mApgData;
 
     /**
@@ -45,34 +46,34 @@ public class IntentDemoActivity extends Activity {
         setContentView(R.layout.intent_demo);
 
         mActivity = this;
-        mApgIntentHelper = new ApgIntentHelper(mActivity);
+
         mMessageTextView = (TextView) findViewById(R.id.intent_demo_message);
         mCiphertextTextView = (TextView) findViewById(R.id.intent_demo_ciphertext);
-
         mDataTextView = (TextView) findViewById(R.id.intent_demo_data);
 
+        mApgIntentHelper = new ApgIntentHelper(mActivity);
         mApgData = new ApgData();
     }
 
-    public void intentDemoCreateNewKeyOnClick(View view) {
+    public void createNewKeyOnClick(View view) {
         // mApgIntentHelper.createNewKey();
-        mApgIntentHelper.createNewKey("test <+491711111111@cryptocall.org>", true, true);
+        mApgIntentHelper.createNewKey("test <user@example.com>", true, true);
     }
 
-    public void intentDemoSelectSecretKeyOnClick(View view) {
+    public void selectSecretKeyOnClick(View view) {
         mApgIntentHelper.selectSecretKey();
     }
 
-    public void intentDemoSelectEncryptionKeysOnClick(View view) {
-        mApgIntentHelper.selectEncryptionKeys("usera@example.com");
+    public void selectEncryptionKeysOnClick(View view) {
+        mApgIntentHelper.selectEncryptionKeys("user@example.com");
     }
 
-    public void intentDemoEncryptOnClick(View view) {
+    public void encryptOnClick(View view) {
         mApgIntentHelper.encrypt(mMessageTextView.getText().toString(),
                 mApgData.getEncryptionKeys(), mApgData.getSignatureKeyId());
     }
 
-    public void intentDemoDecryptOnClick(View view) {
+    public void decryptOnClick(View view) {
         mApgIntentHelper.decrypt(mCiphertextTextView.getText().toString());
     }
 
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ApgIntentHelper.java b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ApgIntentHelper.java
index d38f1d3cc..05763ec30 100644
--- a/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ApgIntentHelper.java
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ApgIntentHelper.java
@@ -184,7 +184,7 @@ public class ApgIntentHelper {
                 apgData.setEncryptionKeys(null);
                 break;
             }
-            apgData.setEncryptionKeys(data.getLongArrayExtra(Constants.EXTRA_SELECTION));
+            apgData.setEncryptionKeys(data.getLongArrayExtra(Constants.RESULT_EXTRA_MASTER_KEY_IDS));
             break;
 
         case Constants.ENCRYPT_MESSAGE:
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/Constants.java b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/Constants.java
index 1ab11154d..f14dbc4fc 100644
--- a/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/Constants.java
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/Constants.java
@@ -70,6 +70,10 @@ public class Constants {
     public static final String EXTRA_NO_PASSPHRASE = "noPassphrase";
     public static final String EXTRA_GENERATE_DEFAULT_KEYS = "generateDefaultKeys";
     public static final String EXTRA_INTENT_VERSION = "intentVersion";
+    
+    
+    public static final String RESULT_EXTRA_MASTER_KEY_IDS = "masterKeyIds";
+    public static final String RESULT_EXTRA_USER_IDS = "userIds";
 
     public static final String INTENT_VERSION = "1";
 
@@ -79,13 +83,4 @@ public class Constants {
     public static final int SELECT_SECRET_KEY = 0x21070004;
     public static final int CREATE_KEY = 0x21070005;
     public static final int EDIT_KEY = 0x21070006;
-
-
-    // public static Pattern PGP_MESSAGE = Pattern.compile(
-    // ".*?(-----BEGIN PGP MESSAGE-----.*?-----END PGP MESSAGE-----).*", Pattern.DOTALL);
-
-    // public static Pattern PGP_SIGNED_MESSAGE = Pattern
-    // .compile(
-    // ".*?(-----BEGIN PGP SIGNED MESSAGE-----.*?-----BEGIN PGP SIGNATURE-----.*?-----END PGP SIGNATURE-----).*",
-    // Pattern.DOTALL);
 }
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl
new file mode 100644
index 000000000..ff6b7254c
--- /dev/null
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgEncryptDecryptHandler.aidl
@@ -0,0 +1,16 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgEncryptDecryptHandler {
+    /**
+     * Either output or streamUri is given. One of them is null
+     *
+     */
+    oneway void onSuccessEncrypt(in byte[] outputBytes, in String outputUri);
+
+    oneway void onSuccessDecrypt(in byte[] outputBytes, in String outputUri, in boolean signature,
+            in long signatureKeyId, in String signatureUserId, in boolean signatureSuccess,
+            in boolean signatureUnknown);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl
new file mode 100644
index 000000000..bb405329a
--- /dev/null
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgHelperHandler.aidl
@@ -0,0 +1,9 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgHelperHandler {
+
+    oneway void onSuccessGetDecryptionKey(in long secretKeyId, in boolean symmetric);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgService.aidl b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgService.aidl
new file mode 100644
index 000000000..71c6a9e42
--- /dev/null
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgService.aidl
@@ -0,0 +1,130 @@
+package org.thialfihar.android.apg.service;
+
+import org.thialfihar.android.apg.service.IApgEncryptDecryptHandler;
+import org.thialfihar.android.apg.service.IApgSignVerifyHandler;
+import org.thialfihar.android.apg.service.IApgHelperHandler;
+
+/**
+ * All methods are oneway, which means they are asynchronous and non-blocking.
+ * Results are returned into given Handler, which has to be implemented on client side.
+ */
+interface IApgService {
+       
+    /**
+     * Encrypt
+     *
+     * Either inputBytes or inputUri is given, the other should be null.
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param inputUri
+     *            Blob in ContentProvider you want to encrypt
+     * @param useAsciiArmor 
+     *            Convert bytes to ascii armored text to guard against encoding problems
+     * @param compression
+     *            Compression: 0x21070001: none, 1: Zip, 2: Zlib, 3: BZip2
+     * @param encryptionKeyIds
+     *            Ids of public keys used for encryption
+     * @param symmetricEncryptionAlgorithm
+     *            7: AES-128, 8: AES-192, 9: AES-256, 4: Blowfish, 10: Twofish, 3: CAST5,
+     *            6: DES, 2: Triple DES, 1: IDEA
+     * @param handler
+     *            Results are returned to this IApgEncryptDecryptHandler Handler
+     *            to onSuccessEncrypt(in byte[] output), after successful encryption
+     */
+    oneway void encryptAsymmetric(in byte[] inputBytes, in String inputUri, in boolean useAsciiArmor,
+            in int compression, in long[] encryptionKeyIds, in int symmetricEncryptionAlgorithm,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as encryptAsymmetric but using a passphrase for symmetric encryption
+     *
+     * @param encryptionPassphrase
+     *            Passphrase for direct symmetric encryption using symmetricEncryptionAlgorithm
+     */
+    oneway void encryptSymmetric(in byte[] inputBytes, in String inputUri, in boolean useAsciiArmor,
+            in int compression, in String encryptionPassphrase, in int symmetricEncryptionAlgorithm,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Encrypt and sign
+     *
+     * Either inputBytes or inputUri is given, the other should be null.
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param inputUri
+     *            Blob in ContentProvider you want to encrypt
+     * @param useAsciiArmor 
+     *            Convert bytes to ascii armored text to guard against encoding problems
+     * @param compression
+     *            Compression: 0x21070001: none, 1: Zip, 2: Zlib, 3: BZip2
+     * @param encryptionKeyIds
+     *            Ids of public keys used for encryption
+     * @param symmetricEncryptionAlgorithm
+     *            7: AES-128, 8: AES-192, 9: AES-256, 4: Blowfish, 10: Twofish, 3: CAST5,
+     *            6: DES, 2: Triple DES, 1: IDEA
+     * @param signatureKeyId
+     *            Key id of key to sign with
+     * @param signatureHashAlgorithm
+     *            1: MD5, 3: RIPEMD-160, 2: SHA-1, 11: SHA-224, 8: SHA-256, 9: SHA-384,
+     *            10: SHA-512
+     * @param signatureForceV3
+     *            Force V3 signatures
+     * @param signaturePassphrase
+     *            Passphrase to unlock signature key
+     * @param handler
+     *            Results are returned to this IApgEncryptDecryptHandler Handler
+     *            to onSuccessEncrypt(in byte[] output), after successful encryption and signing
+     */
+    oneway void encryptAndSignAsymmetric(in byte[] inputBytes, in String inputUri,
+            in boolean useAsciiArmor, in int compression, in long[] encryptionKeyIds,
+            in int symmetricEncryptionAlgorithm, in long signatureKeyId, in int signatureHashAlgorithm,
+            in boolean signatureForceV3, in String signaturePassphrase,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as encryptAndSignAsymmetric but using a passphrase for symmetric encryption
+     *
+     * @param encryptionPassphrase
+     *            Passphrase for direct symmetric encryption using symmetricEncryptionAlgorithm
+     */
+    oneway void encryptAndSignSymmetric(in byte[] inputBytes, in String inputUri,
+            in boolean useAsciiArmor, in int compression, in String encryptionPassphrase,
+            in int symmetricEncryptionAlgorithm, in long signatureKeyId, in int signatureHashAlgorithm,
+            in boolean signatureForceV3, in String signaturePassphrase,
+            in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Decrypts and verifies given input bytes. If no signature is present this method
+     * will only decrypt.
+     * 
+     * @param inputBytes
+     *            Byte array you want to decrypt and verify
+     * @param inputUri
+     *            Blob in ContentProvider you want to decrypt and verify
+     * @param keyPassphrase
+     *            Passphrase to unlock secret key for decryption.
+     * @param handler
+     *            Handler where to return results to after successful encryption
+     */
+    oneway void decryptAndVerifyAsymmetric(in byte[] inputBytes, in String inputUri,
+            in String keyPassphrase, in IApgEncryptDecryptHandler handler);
+    
+    /**
+     * Same as decryptAndVerifyAsymmetric but for symmetric decryption.
+     *
+     * @param encryptionPassphrase
+     *            Passphrase to decrypt
+     */
+    oneway void decryptAndVerifySymmetric(in byte[] inputBytes, in String inputUri,
+            in String encryptionPassphrase, in IApgEncryptDecryptHandler handler);
+    
+    /**
+     *
+     */
+    oneway void getDecryptionKey(in byte[] inputBytes, in String inputUri,
+            in IApgHelperHandler handler);
+    
+    
+}
\ No newline at end of file
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl
new file mode 100644
index 000000000..1375d1548
--- /dev/null
+++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/service/IApgSignVerifyHandler.aidl
@@ -0,0 +1,11 @@
+package org.thialfihar.android.apg.service;
+
+interface IApgSignVerifyHandler {
+    oneway void onSuccessSign(in byte[] outputBytes, in String outputUri);
+    
+    oneway void onSuccessVerify(in boolean signature, in long signatureKeyId,
+            in String signatureUserId, in boolean signatureSuccess, in boolean signatureUnknown);
+    
+    
+    oneway void onException(in int exceptionNumber, in String message);
+}
\ No newline at end of file