Merge branch 'development' into v/crypto-input-parcel

Conflicts:
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SafeSlingerActivity.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java

32 files changed, 753 insertions, 186 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportExportOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportExportOperation.java
index 85538a520..ff0b545cd 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportExportOperation.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportExportOperation.java
@@ -168,7 +168,7 @@ public class ImportExportOperation extends BaseOperation {
             return new ImportKeyResult(ImportKeyResult.RESULT_FAIL_NOTHING, log);
         }
 
-        int newKeys = 0, oldKeys = 0, badKeys = 0, secret = 0;
+        int newKeys = 0, updatedKeys = 0, badKeys = 0, secret = 0;
         ArrayList<Long> importedMasterKeyIds = new ArrayList<>();
 
         boolean cancelled = false;
@@ -302,7 +302,7 @@ public class ImportExportOperation extends BaseOperation {
                 if (!result.success()) {
                     badKeys += 1;
                 } else if (result.updated()) {
-                    oldKeys += 1;
+                    updatedKeys += 1;
                     importedMasterKeyIds.add(key.getMasterKeyId());
                 } else {
                     newKeys += 1;
@@ -333,7 +333,9 @@ public class ImportExportOperation extends BaseOperation {
         }
 
         // Special: make sure new data is synced into contacts
-        ContactSyncAdapterService.requestSync();
+        // disabling sync right now since it reduces speed while multi-threading
+        // so, we expect calling functions to take care of it. KeychainIntentService handles this
+        //ContactSyncAdapterService.requestSync();
 
         // convert to long array
         long[] importedMasterKeyIdsArray = new long[importedMasterKeyIds.size()];
@@ -348,18 +350,18 @@ public class ImportExportOperation extends BaseOperation {
         }
 
         // special return case: no new keys at all
-        if (badKeys == 0 && newKeys == 0 && oldKeys == 0) {
+        if (badKeys == 0 && newKeys == 0 && updatedKeys == 0) {
             resultType = ImportKeyResult.RESULT_FAIL_NOTHING;
         } else {
             if (newKeys > 0) {
                 resultType |= ImportKeyResult.RESULT_OK_NEWKEYS;
             }
-            if (oldKeys > 0) {
+            if (updatedKeys > 0) {
                 resultType |= ImportKeyResult.RESULT_OK_UPDATED;
             }
             if (badKeys > 0) {
                 resultType |= ImportKeyResult.RESULT_WITH_ERRORS;
-                if (newKeys == 0 && oldKeys == 0) {
+                if (newKeys == 0 && updatedKeys == 0) {
                     resultType |= ImportKeyResult.RESULT_ERROR;
                 }
             }
@@ -369,15 +371,15 @@ public class ImportExportOperation extends BaseOperation {
         }
 
         // Final log entry, it's easier to do this individually
-        if ( (newKeys > 0 || oldKeys > 0) && badKeys > 0) {
+        if ( (newKeys > 0 || updatedKeys > 0) && badKeys > 0) {
             log.add(LogType.MSG_IMPORT_PARTIAL, 1);
-        } else if (newKeys > 0 || oldKeys > 0) {
+        } else if (newKeys > 0 || updatedKeys > 0) {
             log.add(LogType.MSG_IMPORT_SUCCESS, 1);
         } else {
             log.add(LogType.MSG_IMPORT_ERROR, 1);
         }
 
-        return new ImportKeyResult(resultType, log, newKeys, oldKeys, badKeys, secret,
+        return new ImportKeyResult(resultType, log, newKeys, updatedKeys, badKeys, secret,
                 importedMasterKeyIdsArray);
     }
 
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java
index 7e70b4571..ef19e3fa1 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java
@@ -62,19 +62,19 @@ import java.util.Arrays;
 import java.util.Date;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-/** This class supports a single, low-level, sign/encrypt operation.
- *
+/**
+ * This class supports a single, low-level, sign/encrypt operation.
+ * <p/>
  * The operation of this class takes an Input- and OutputStream plus a
  * PgpSignEncryptInput, and signs and/or encrypts the stream as
  * parametrized in the PgpSignEncryptInput object. It returns its status
  * and a possible detached signature as a SignEncryptResult.
- *
+ * <p/>
  * For a high-level operation based on URIs, see SignEncryptOperation.
  *
  * @see PgpSignEncryptInputParcel
  * @see org.sufficientlysecure.keychain.operations.results.PgpSignEncryptResult
  * @see org.sufficientlysecure.keychain.operations.SignEncryptOperation
- *
  */
 public class PgpSignEncryptOperation extends BaseOperation {
 
@@ -488,6 +488,12 @@ public class PgpSignEncryptOperation extends BaseOperation {
                     log.add(LogType.MSG_PSE_PENDING_NFC, indent);
                     PgpSignEncryptResult result =
                             new PgpSignEncryptResult(PgpSignEncryptResult.RESULT_PENDING_NFC, log);
+
+                    // SignatureSubKeyId can be null.
+                    if (input.getSignatureSubKeyId() == null) {
+                        return new PgpSignEncryptResult(PgpSignEncryptResult.RESULT_ERROR, log);
+                    }
+
                     // Note that the checked key here is the master key, not the signing key
                     // (although these are always the same on Yubikeys)
                     result.setNfcData(signingKey.getKeyId(), e.hashToSign, e.hashAlgo,
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/CloudImportService.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/CloudImportService.java
new file mode 100644
index 000000000..180109297
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/CloudImportService.java
@@ -0,0 +1,387 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.service;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
+import org.sufficientlysecure.keychain.operations.ImportExportOperation;
+import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
+import org.sufficientlysecure.keychain.operations.results.OperationResult;
+import org.sufficientlysecure.keychain.pgp.Progressable;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
+import org.sufficientlysecure.keychain.util.ParcelableFileCache;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/**
+ * When this service is started it will initiate a multi-threaded key import and when done it will
+ * shut itself down.
+ */
+public class CloudImportService extends Service implements Progressable {
+
+    //required as extras from intent
+    public static final String EXTRA_MESSENGER = "messenger";
+    public static final String EXTRA_DATA = "data";
+
+    //required by data bundle
+    public static final String IMPORT_KEY_LIST = "import_key_list";
+    public static final String IMPORT_KEY_SERVER = "import_key_server";
+
+    // indicates a request to cancel the import
+    public static final String ACTION_CANCEL = Constants.INTENT_PREFIX + "CANCEL";
+
+    //tells the spawned threads whether the user has requested a cancel
+    private static AtomicBoolean mActionCancelled = new AtomicBoolean(false);
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    /**
+     * Used to accumulate the results of individual key imports
+     */
+    private class KeyImportAccumulator {
+        private OperationResult.OperationLog mImportLog = new OperationResult.OperationLog();
+        private int mTotalKeys;
+        private int mImportedKeys = 0;
+        private Progressable mImportProgressable;
+        ArrayList<Long> mImportedMasterKeyIds = new ArrayList<Long>();
+        private int mBadKeys = 0;
+        private int mNewKeys = 0;
+        private int mUpdatedKeys = 0;
+        private int mSecret = 0;
+        private int mResultType = 0;
+
+        public KeyImportAccumulator(int totalKeys) {
+            mTotalKeys = totalKeys;
+            //ignore updates from ImportExportOperation for now
+            mImportProgressable = new Progressable() {
+                @Override
+                public void setProgress(String message, int current, int total) {
+
+                }
+
+                @Override
+                public void setProgress(int resourceId, int current, int total) {
+
+                }
+
+                @Override
+                public void setProgress(int current, int total) {
+
+                }
+
+                @Override
+                public void setPreventCancel() {
+
+                }
+            };
+        }
+
+        public Progressable getImportProgressable() {
+            return mImportProgressable;
+        }
+
+        public int getTotalKeys() {
+            return mTotalKeys;
+        }
+
+        public int getImportedKeys() {
+            return mImportedKeys;
+        }
+
+        public synchronized void accumulateKeyImport(ImportKeyResult result) {
+            mImportedKeys++;
+            mImportLog.addAll(result.getLog().toList());//accumulates log
+            mBadKeys += result.mBadKeys;
+            mNewKeys += result.mNewKeys;
+            mUpdatedKeys += result.mUpdatedKeys;
+            mSecret += result.mSecret;
+
+            long[] masterKeyIds = result.getImportedMasterKeyIds();
+            for (int i = 0; i < masterKeyIds.length; i++) {
+                mImportedMasterKeyIds.add(masterKeyIds[i]);
+            }
+
+            // if any key import has been cancelled, set result type to cancelled
+            // resultType is added to in getConsolidatedKayImport to account for remaining factors
+            mResultType |= result.getResult() & ImportKeyResult.RESULT_CANCELLED;
+
+        }
+
+        /**
+         * returns accumulated result of all imports so far
+         *
+         * @return
+         */
+        public ImportKeyResult getConsolidatedImportKeyResult() {
+
+            // adding required information to mResultType
+            // special case,no keys requested for import
+            if (mBadKeys == 0 && mNewKeys == 0 && mUpdatedKeys == 0) {
+                mResultType = ImportKeyResult.RESULT_FAIL_NOTHING;
+            } else {
+                if (mNewKeys > 0) {
+                    mResultType |= ImportKeyResult.RESULT_OK_NEWKEYS;
+                }
+                if (mUpdatedKeys > 0) {
+                    mResultType |= ImportKeyResult.RESULT_OK_UPDATED;
+                }
+                if (mBadKeys > 0) {
+                    mResultType |= ImportKeyResult.RESULT_WITH_ERRORS;
+                    if (mNewKeys == 0 && mUpdatedKeys == 0) {
+                        mResultType |= ImportKeyResult.RESULT_ERROR;
+                    }
+                }
+                if (mImportLog.containsWarnings()) {
+                    mResultType |= ImportKeyResult.RESULT_WARNINGS;
+                }
+            }
+
+            long masterKeyIds[] = new long[mImportedMasterKeyIds.size()];
+            for (int i = 0; i < masterKeyIds.length; i++) {
+                masterKeyIds[i] = mImportedMasterKeyIds.get(i);
+            }
+
+            return new ImportKeyResult(mResultType, mImportLog, mNewKeys, mUpdatedKeys, mBadKeys,
+                    mSecret, masterKeyIds);
+        }
+
+        public boolean isImportFinished() {
+            return mTotalKeys == mImportedKeys;
+        }
+    }
+
+    private KeyImportAccumulator mKeyImportAccumulator;
+
+    Messenger mMessenger;
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+
+        if (ACTION_CANCEL.equals(intent.getAction())) {
+            mActionCancelled.set(true);
+            return Service.START_NOT_STICKY;
+        }
+
+        mActionCancelled.set(false);//we haven't been cancelled, yet
+
+        Bundle extras = intent.getExtras();
+
+        mMessenger = (Messenger) extras.get(EXTRA_MESSENGER);
+
+        Bundle data = extras.getBundle(EXTRA_DATA);
+
+        final String keyServer = data.getString(IMPORT_KEY_SERVER);
+        //keyList being null (in case key list to be reaad from cache) is checked by importKeys
+        final ArrayList<ParcelableKeyRing> keyList = data.getParcelableArrayList(IMPORT_KEY_LIST);
+
+        // Adding keys to the ThreadPoolExecutor takes time, we don't want to block the main thread
+        Thread baseImportThread = new Thread(new Runnable() {
+
+            @Override
+            public void run() {
+                importKeys(keyList, keyServer);
+            }
+        });
+        baseImportThread.start();
+        return Service.START_NOT_STICKY;
+    }
+
+    public void importKeys(ArrayList<ParcelableKeyRing> keyList, final String keyServer) {
+        ParcelableFileCache<ParcelableKeyRing> cache =
+                new ParcelableFileCache<>(this, "key_import.pcl");
+        int totKeys = 0;
+        Iterator<ParcelableKeyRing> keyListIterator = null;
+        //either keyList or cache must be null, no guarantees otherwise
+        if (keyList == null) {//export from cache, copied from ImportExportOperation.importKeyRings
+
+            try {
+                ParcelableFileCache.IteratorWithSize<ParcelableKeyRing> it = cache.readCache();
+                keyListIterator = it;
+                totKeys = it.getSize();
+            } catch (IOException e) {
+
+                // Special treatment here, we need a lot
+                OperationResult.OperationLog log = new OperationResult.OperationLog();
+                log.add(OperationResult.LogType.MSG_IMPORT, 0, 0);
+                log.add(OperationResult.LogType.MSG_IMPORT_ERROR_IO, 0, 0);
+
+                keyImportFailed(new ImportKeyResult(ImportKeyResult.RESULT_ERROR, log));
+            }
+        } else {
+            keyListIterator = keyList.iterator();
+            totKeys = keyList.size();
+        }
+
+
+        if (keyListIterator != null) {
+            mKeyImportAccumulator = new KeyImportAccumulator(totKeys);
+            setProgress(0, totKeys);
+
+            final int maxThreads = 200;
+            ExecutorService importExecutor = new ThreadPoolExecutor(0, maxThreads,
+                    30L, TimeUnit.SECONDS,
+                    new SynchronousQueue<Runnable>());
+
+            while (keyListIterator.hasNext()) {
+
+                final ParcelableKeyRing pkRing = keyListIterator.next();
+
+                Runnable importOperationRunnable = new Runnable() {
+
+                    @Override
+                    public void run() {
+                        ImportKeyResult result = null;
+                        try {
+                            ImportExportOperation importExportOperation = new ImportExportOperation(
+                                    CloudImportService.this,
+                                    new ProviderHelper(CloudImportService.this),
+                                    mKeyImportAccumulator.getImportProgressable(),
+                                    mActionCancelled);
+
+                            ArrayList<ParcelableKeyRing> list = new ArrayList<>();
+                            list.add(pkRing);
+                            result = importExportOperation.importKeyRings(list,
+                                    keyServer);
+                        } finally {
+                            // in the off-chance that importKeyRings does something to crash the
+                            // thread before it can call singleKeyRingImportCompleted, our imported
+                            // key count will go wrong. This will cause the service to never die,
+                            // and the progress dialog to stay displayed. The finally block was
+                            // originally meant to ensure singleKeyRingImportCompleted was called,
+                            // and checks for null were to be introduced, but in such a scenario,
+                            // knowing an uncaught error exists in importKeyRings is more important.
+
+                            // if a null gets passed, something wrong is happening. We want a crash.
+
+                            singleKeyRingImportCompleted(result);
+                        }
+                    }
+                };
+
+                importExecutor.execute(importOperationRunnable);
+            }
+        }
+    }
+
+    private synchronized void singleKeyRingImportCompleted(ImportKeyResult result) {
+        // increase imported key count and accumulate log and bad, new etc. key counts from result
+        mKeyImportAccumulator.accumulateKeyImport(result);
+
+        setProgress(mKeyImportAccumulator.getImportedKeys(), mKeyImportAccumulator.getTotalKeys());
+
+        if (mKeyImportAccumulator.isImportFinished()) {
+            ContactSyncAdapterService.requestSync();
+
+            sendMessageToHandler(ServiceProgressHandler.MessageStatus.OKAY,
+                    mKeyImportAccumulator.getConsolidatedImportKeyResult());
+
+            stopSelf();//we're done here
+        }
+    }
+
+    private void keyImportFailed(ImportKeyResult result) {
+        sendMessageToHandler(ServiceProgressHandler.MessageStatus.OKAY, result);
+    }
+
+    private void sendMessageToHandler(ServiceProgressHandler.MessageStatus status, Integer arg2, Bundle data) {
+
+        Message msg = Message.obtain();
+        assert msg != null;
+        msg.arg1 = status.ordinal();
+        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(ServiceProgressHandler.MessageStatus status, OperationResult data) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(OperationResult.EXTRA_RESULT, data);
+        sendMessageToHandler(status, null, bundle);
+    }
+
+    private void sendMessageToHandler(ServiceProgressHandler.MessageStatus status, Bundle data) {
+        sendMessageToHandler(status, null, data);
+    }
+
+    private void sendMessageToHandler(ServiceProgressHandler.MessageStatus status) {
+        sendMessageToHandler(status, null, null);
+    }
+
+    /**
+     * Set progress of ProgressDialog by sending message to handler on UI thread
+     */
+    @Override
+    public synchronized 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(ServiceProgressHandler.DATA_MESSAGE, message);
+        }
+        data.putInt(ServiceProgressHandler.DATA_PROGRESS, progress);
+        data.putInt(ServiceProgressHandler.DATA_PROGRESS_MAX, max);
+
+        sendMessageToHandler(ServiceProgressHandler.MessageStatus.UPDATE_PROGRESS, null, data);
+    }
+
+    @Override
+    public synchronized void setProgress(int resourceId, int progress, int max) {
+        setProgress(getString(resourceId), progress, max);
+    }
+
+    @Override
+    public synchronized void setProgress(int progress, int max) {
+        setProgress(null, progress, max);
+    }
+
+    @Override
+    public synchronized void setPreventCancel() {
+        sendMessageToHandler(ServiceProgressHandler.MessageStatus.PREVENT_CANCEL);
+    }
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
index a400066ab..1a94d70b7 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
@@ -60,8 +60,8 @@ import org.sufficientlysecure.keychain.pgp.SignEncryptParcel;
 import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
 import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralMsgIdException;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler.MessageStatus;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler.MessageStatus;
 import org.sufficientlysecure.keychain.util.FileHelper;
 import org.sufficientlysecure.keychain.util.InputData;
 import org.sufficientlysecure.keychain.util.Log;
@@ -137,7 +137,7 @@ public class KeychainIntentService extends IntentService implements Progressable
         private static final IOType[] values = values();
 
         public static IOType fromInt(int n) {
-            if(n < 0 || n >= values.length) {
+            if (n < 0 || n >= values.length) {
                 return UNKNOWN;
             } else {
                 return values[n];
@@ -398,12 +398,12 @@ public class KeychainIntentService extends IntentService implements Progressable
                     }
 
                     Bundle resultData = new Bundle();
-                    resultData.putString(KeychainIntentServiceHandler.DATA_MESSAGE, "OK");
+                    resultData.putString(ServiceProgressHandler.DATA_MESSAGE, "OK");
 
                     // these help the handler construct a useful human-readable message
-                    resultData.putString(KeychainIntentServiceHandler.KEYBASE_PROOF_URL, prover.getProofUrl());
-                    resultData.putString(KeychainIntentServiceHandler.KEYBASE_PRESENCE_URL, prover.getPresenceUrl());
-                    resultData.putString(KeychainIntentServiceHandler.KEYBASE_PRESENCE_LABEL, prover.getPresenceLabel());
+                    resultData.putString(ServiceProgressHandler.KEYBASE_PROOF_URL, prover.getProofUrl());
+                    resultData.putString(ServiceProgressHandler.KEYBASE_PRESENCE_URL, prover.getPresenceUrl());
+                    resultData.putString(ServiceProgressHandler.KEYBASE_PRESENCE_LABEL, prover.getPresenceLabel());
                     sendMessageToHandler(MessageStatus.OKAY, resultData);
                 } catch (Exception e) {
                     sendErrorToHandler(e);
@@ -600,7 +600,7 @@ public class KeychainIntentService extends IntentService implements Progressable
 
     private void sendProofError(String msg) {
         Bundle bundle = new Bundle();
-        bundle.putString(KeychainIntentServiceHandler.DATA_ERROR, msg);
+        bundle.putString(ServiceProgressHandler.DATA_ERROR, msg);
         sendMessageToHandler(MessageStatus.OKAY, bundle);
     }
 
@@ -617,7 +617,7 @@ public class KeychainIntentService extends IntentService implements Progressable
         Log.d(Constants.TAG, "KeychainIntentService Exception: ", e);
 
         Bundle data = new Bundle();
-        data.putString(KeychainIntentServiceHandler.DATA_ERROR, message);
+        data.putString(ServiceProgressHandler.DATA_ERROR, message);
         sendMessageToHandler(MessageStatus.EXCEPTION, null, data);
     }
 
@@ -665,10 +665,10 @@ public class KeychainIntentService extends IntentService implements Progressable
 
         Bundle data = new Bundle();
         if (message != null) {
-            data.putString(KeychainIntentServiceHandler.DATA_MESSAGE, message);
+            data.putString(ServiceProgressHandler.DATA_MESSAGE, message);
         }
-        data.putInt(KeychainIntentServiceHandler.DATA_PROGRESS, progress);
-        data.putInt(KeychainIntentServiceHandler.DATA_PROGRESS_MAX, max);
+        data.putInt(ServiceProgressHandler.DATA_PROGRESS, progress);
+        data.putInt(ServiceProgressHandler.DATA_PROGRESS_MAX, max);
 
         sendMessageToHandler(MessageStatus.UPDATE_PROGRESS, null, data);
     }
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/PassphraseCacheService.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/PassphraseCacheService.java
index 5e8ad96cd..8e37a8867 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/PassphraseCacheService.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/PassphraseCacheService.java
@@ -93,7 +93,6 @@ public class PassphraseCacheService extends Service {
     public static final String EXTRA_MESSENGER = "messenger";
     public static final String EXTRA_USER_ID = "user_id";
 
-    private static final int REQUEST_ID = 0;
     private static final long DEFAULT_TTL = 15;
 
     private static final int NOTIFICATION_ID = 1;
@@ -327,7 +326,8 @@ public class PassphraseCacheService extends Service {
     private static PendingIntent buildIntent(Context context, long keyId) {
         Intent intent = new Intent(BROADCAST_ACTION_PASSPHRASE_CACHE_SERVICE);
         intent.putExtra(EXTRA_KEY_ID, keyId);
-        return PendingIntent.getBroadcast(context, REQUEST_ID, intent,
+        // request code should be unique for each PendingIntent, thus keyId is used
+        return PendingIntent.getBroadcast(context, (int) keyId, intent,
                 PendingIntent.FLAG_CANCEL_CURRENT);
     }
 
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentServiceHandler.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/ServiceProgressHandler.java
index 794e660bd..430d8a49b 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentServiceHandler.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/ServiceProgressHandler.java
@@ -32,7 +32,7 @@ import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.Log;
 
-public class KeychainIntentServiceHandler extends Handler {
+public class ServiceProgressHandler extends Handler {
 
     // possible messages sent from this service to handler on ui
     public static enum MessageStatus{
@@ -69,28 +69,34 @@ public class KeychainIntentServiceHandler extends Handler {
     Activity mActivity;
     ProgressDialogFragment mProgressDialogFragment;
 
-    public KeychainIntentServiceHandler(Activity activity) {
+    public ServiceProgressHandler(Activity activity) {
         this.mActivity = activity;
     }
 
-    public KeychainIntentServiceHandler(Activity activity,
-                                        ProgressDialogFragment progressDialogFragment) {
+    public ServiceProgressHandler(Activity activity,
+                                  ProgressDialogFragment progressDialogFragment) {
         this.mActivity = activity;
         this.mProgressDialogFragment = progressDialogFragment;
     }
 
-    public KeychainIntentServiceHandler(Activity activity, String progressDialogMessage,
-                                        int progressDialogStyle) {
-        this(activity, progressDialogMessage, progressDialogStyle, false);
+    public ServiceProgressHandler(Activity activity,
+                                  String progressDialogMessage,
+                                  int progressDialogStyle,
+                                  ProgressDialogFragment.ServiceType serviceType) {
+        this(activity, progressDialogMessage, progressDialogStyle, false, serviceType);
     }
 
-    public KeychainIntentServiceHandler(Activity activity, String progressDialogMessage,
-                                        int progressDialogStyle, boolean cancelable) {
+    public ServiceProgressHandler(Activity activity,
+                                  String progressDialogMessage,
+                                  int progressDialogStyle,
+                                  boolean cancelable,
+                                  ProgressDialogFragment.ServiceType serviceType) {
         this.mActivity = activity;
         this.mProgressDialogFragment = ProgressDialogFragment.newInstance(
                 progressDialogMessage,
                 progressDialogStyle,
-                cancelable);
+                cancelable,
+                serviceType);
     }
 
     public void showProgressDialog(FragmentActivity activity) {
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java
index b98fd90f1..a669fcc8c 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java
@@ -55,9 +55,11 @@ import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.CertifyActionsParcel;
 import org.sufficientlysecure.keychain.service.CertifyActionsParcel.CertifyAction;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
 import org.sufficientlysecure.keychain.ui.adapter.MultiUserIdsAdapter;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.ui.widget.CertifyKeySpinner;
 import org.sufficientlysecure.keychain.ui.widget.KeySpinner;
@@ -342,9 +344,12 @@ public class CertifyKeyFragment extends CryptoOperationFragment
         } else {
 
             // Message is received after signing is done in KeychainIntentService
-            KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
-                    getActivity(), getString(R.string.progress_certifying),
-                    ProgressDialog.STYLE_SPINNER, true) {
+            ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                    getActivity(),
+                    getString(R.string.progress_certifying),
+                    ProgressDialog.STYLE_SPINNER,
+                    true,
+                    ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
                 public void handleMessage(Message message) {
                     // handle messages by KeychainIntentCryptoServiceHandler first
                     super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ConsolidateDialogActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ConsolidateDialogActivity.java
index c55aad1f9..11ba3e287 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ConsolidateDialogActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ConsolidateDialogActivity.java
@@ -26,7 +26,8 @@ import android.support.v4.app.FragmentActivity;
 
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 
 /**
  * We can not directly create a dialog on the application context.
@@ -49,10 +50,11 @@ public class ConsolidateDialogActivity extends FragmentActivity {
 
     private void consolidateRecovery(boolean recovery) {
         // Message is received after importing is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                 this,
                 getString(R.string.progress_importing),
-                ProgressDialog.STYLE_HORIZONTAL) {
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyFinalFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyFinalFragment.java
index cbe3eecd4..b0a13c897 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyFinalFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyFinalFragment.java
@@ -39,16 +39,15 @@ import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.pgp.KeyRing;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.Algorithm;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.ChangeUnlockParcel;
 import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.util.Log;
-import org.sufficientlysecure.keychain.util.Passphrase;
 import org.sufficientlysecure.keychain.util.Preferences;
 
-import java.util.ArrayList;
 import java.util.Iterator;
 
 public class CreateKeyFinalFragment extends Fragment {
@@ -195,10 +194,11 @@ public class CreateKeyFinalFragment extends Fragment {
         Intent intent = new Intent(getActivity(), KeychainIntentService.class);
         intent.setAction(KeychainIntentService.ACTION_EDIT_KEYRING);
 
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                 getActivity(),
                 getString(R.string.progress_building_key),
-                ProgressDialog.STYLE_HORIZONTAL) {
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
@@ -267,8 +267,11 @@ public class CreateKeyFinalFragment extends Fragment {
 
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_uploading), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_uploading),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiImportFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiImportFragment.java
index bb26a4ede..1cd0aaf2f 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiImportFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiImportFragment.java
@@ -40,9 +40,10 @@ import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
 import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
 import org.sufficientlysecure.keychain.ui.CreateKeyActivity.NfcListenerFragment;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.util.Preferences;
 
@@ -174,8 +175,12 @@ public class CreateKeyYubiImportFragment extends Fragment implements NfcListener
     public void importKey() {
 
         // Message is received after decrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_importing), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_importing),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT
+        ) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiWaitFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiWaitFragment.java
index c338a0f1f..579dddf79 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiWaitFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyYubiWaitFragment.java
@@ -17,45 +17,15 @@
 
 package org.sufficientlysecure.keychain.ui;
 
-import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.Arrays;
-
 import android.app.Activity;
-import android.content.Context;
-import android.content.Intent;
-import android.database.Cursor;
-import android.net.Uri;
 import android.os.Bundle;
-import android.os.Message;
-import android.os.Messenger;
 import android.support.v4.app.Fragment;
-import android.support.v4.app.LoaderManager;
-import android.support.v4.content.CursorLoader;
-import android.support.v4.content.Loader;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.EditText;
-import android.widget.TextView;
-import android.widget.ViewAnimator;
 
 import org.sufficientlysecure.keychain.R;
-import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
-import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
-import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
-import org.sufficientlysecure.keychain.operations.results.PromoteKeyResult;
-import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
-import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
-import org.sufficientlysecure.keychain.ui.CreateKeyActivity.NfcListenerFragment;
-import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
-import org.sufficientlysecure.keychain.ui.util.Notify;
-import org.sufficientlysecure.keychain.ui.util.Notify.Style;
-import org.sufficientlysecure.keychain.ui.widget.NameEditText;
-import org.sufficientlysecure.keychain.util.Preferences;
 
 
 public class CreateKeyYubiWaitFragment extends Fragment {
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CryptoOperationFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CryptoOperationFragment.java
index 6b67d1db8..592c7db22 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CryptoOperationFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CryptoOperationFragment.java
@@ -10,7 +10,7 @@ import android.support.v4.app.Fragment;
 import org.sufficientlysecure.keychain.operations.results.CertifyResult;
 import org.sufficientlysecure.keychain.operations.results.InputPendingResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler.MessageStatus;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
 
@@ -73,7 +73,7 @@ public abstract class CryptoOperationFragment extends Fragment {
 
     public boolean handlePendingMessage(Message message) {
 
-        if (message.arg1 == MessageStatus.OKAY.ordinal()) {
+        if (message.arg1 == ServiceProgressHandler.MessageStatus.OKAY.ordinal()) {
             Bundle data = message.getData();
 
             OperationResult result = data.getParcelable(CertifyResult.EXTRA_RESULT);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
index a92fb596c..c75e28145 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
@@ -38,8 +38,9 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
 import org.sufficientlysecure.keychain.service.KeychainIntentService.IOType;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.ui.dialog.DeleteFileDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.FileHelper;
 import org.sufficientlysecure.keychain.util.Log;
@@ -197,8 +198,11 @@ public class DecryptFilesFragment extends DecryptFragment {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after decrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_decrypting),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
@@ -271,8 +275,11 @@ public class DecryptFilesFragment extends DecryptFragment {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after decrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_decrypting),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptTextFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptTextFragment.java
index 80a07214b..f6e21937d 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptTextFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptTextFragment.java
@@ -37,7 +37,8 @@ import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
 import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
 import org.sufficientlysecure.keychain.service.KeychainIntentService.IOType;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.ShareHelper;
@@ -167,8 +168,11 @@ public class DecryptTextFragment extends DecryptFragment {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after encrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_decrypting),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java
index 13fba14e9..2375c1d30 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java
@@ -52,7 +52,8 @@ import org.sufficientlysecure.keychain.provider.KeychainContract.UserPackets;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.provider.ProviderHelper.NotFoundException;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.ChangeUnlockParcel;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.SubkeyChange;
@@ -61,12 +62,7 @@ import org.sufficientlysecure.keychain.ui.adapter.SubkeysAdapter;
 import org.sufficientlysecure.keychain.ui.adapter.SubkeysAddedAdapter;
 import org.sufficientlysecure.keychain.ui.adapter.UserIdsAdapter;
 import org.sufficientlysecure.keychain.ui.adapter.UserIdsAddedAdapter;
-import org.sufficientlysecure.keychain.ui.dialog.AddSubkeyDialogFragment;
-import org.sufficientlysecure.keychain.ui.dialog.AddUserIdDialogFragment;
-import org.sufficientlysecure.keychain.ui.dialog.EditSubkeyDialogFragment;
-import org.sufficientlysecure.keychain.ui.dialog.EditSubkeyExpiryDialogFragment;
-import org.sufficientlysecure.keychain.ui.dialog.EditUserIdDialogFragment;
-import org.sufficientlysecure.keychain.ui.dialog.SetPassphraseDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.*;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Passphrase;
@@ -552,11 +548,12 @@ public class EditKeyFragment extends CryptoOperationFragment implements
         Log.d(Constants.TAG, "cryptoInput:\n" + cryptoInput);
         Log.d(Constants.TAG, "mSaveKeyringParcel:\n" + mSaveKeyringParcel);
 
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                 getActivity(),
                 getString(R.string.progress_saving),
                 ProgressDialog.STYLE_HORIZONTAL,
-                true) {
+                true,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
index 5254af19f..949a595d3 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
@@ -30,10 +30,11 @@ import org.sufficientlysecure.keychain.operations.results.PgpSignEncryptResult;
 import org.sufficientlysecure.keychain.operations.results.SignEncryptResult;
 import org.sufficientlysecure.keychain.pgp.SignEncryptParcel;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
 import org.sufficientlysecure.keychain.ui.base.BaseActivity;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.util.Passphrase;
 
 
@@ -126,8 +127,11 @@ public abstract class EncryptActivity extends BaseActivity {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after encrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler serviceHandler = new KeychainIntentServiceHandler(this,
-                getString(R.string.progress_encrypting), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler serviceHandler = new ServiceProgressHandler(
+                this,
+                getString(R.string.progress_encrypting),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptTextActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptTextActivity.java
index 827418f08..6d472abb4 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptTextActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptTextActivity.java
@@ -136,7 +136,9 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
 
     @Override
     public void setPassphrase(Passphrase passphrase) {
-        mPassphrase.removeFromMemory();
+        if (mPassphrase != null) {
+            mPassphrase.removeFromMemory();
+        }
         mPassphrase = passphrase;
     }
 
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpAboutFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpAboutFragment.java
index 5909970af..ac4b94d64 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpAboutFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpAboutFragment.java
@@ -27,11 +27,14 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import org.markdown4j.Markdown4jProcessor;
 import org.sufficientlysecure.htmltextview.HtmlTextView;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.util.Log;
 
+import java.io.IOException;
+
 
 public class HelpAboutFragment extends Fragment {
 
@@ -44,8 +47,14 @@ public class HelpAboutFragment extends Fragment {
 
         HtmlTextView aboutTextView = (HtmlTextView) view.findViewById(R.id.help_about_text);
 
-        // load html from raw resource (Parsing handled by HtmlTextView library)
-        aboutTextView.setHtmlFromRawResource(getActivity(), R.raw.help_about, true);
+        // load markdown from raw resource
+        try {
+            String html = new Markdown4jProcessor().process(
+                    getActivity().getResources().openRawResource(R.raw.help_about));
+            aboutTextView.setHtmlFromString(html, true);
+        } catch (IOException e) {
+            Log.e(Constants.TAG, "IOException", e);
+        }
 
         // no flickering when clicking textview for Android < 4
         aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java
index 4aa706f57..c757c8e88 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java
@@ -66,18 +66,23 @@ public class HelpActivity extends BaseActivity {
         }
 
         Bundle startBundle = new Bundle();
-        startBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_start);
-        mTabsAdapter.addTab(HelpHtmlFragment.class, startBundle,
+        startBundle.putInt(HelpMarkdownFragment.ARG_MARKDOWN_RES, R.raw.help_start);
+        mTabsAdapter.addTab(HelpMarkdownFragment.class, startBundle,
                 getString(R.string.help_tab_start));
 
-        Bundle wotBundle = new Bundle();
-        wotBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_certification);
-        mTabsAdapter.addTab(HelpHtmlFragment.class, wotBundle,
+        Bundle certificationBundle = new Bundle();
+        certificationBundle.putInt(HelpMarkdownFragment.ARG_MARKDOWN_RES, R.raw.help_certification);
+        mTabsAdapter.addTab(HelpMarkdownFragment.class, certificationBundle,
                 getString(R.string.help_tab_wot));
 
+        Bundle faqBundle = new Bundle();
+        faqBundle.putInt(HelpMarkdownFragment.ARG_MARKDOWN_RES, R.raw.help_faq);
+        mTabsAdapter.addTab(HelpMarkdownFragment.class, faqBundle,
+                getString(R.string.help_tab_faq));
+
         Bundle changelogBundle = new Bundle();
-        changelogBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_changelog);
-        mTabsAdapter.addTab(HelpHtmlFragment.class, changelogBundle,
+        changelogBundle.putInt(HelpMarkdownFragment.ARG_MARKDOWN_RES, R.raw.help_changelog);
+        mTabsAdapter.addTab(HelpMarkdownFragment.class, changelogBundle,
                 getString(R.string.help_tab_changelog));
 
         mTabsAdapter.addTab(HelpAboutFragment.class, null,
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpHtmlFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpMarkdownFragment.java
index a3f0ef614..97d39feb1 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpHtmlFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpMarkdownFragment.java
@@ -26,24 +26,29 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ScrollView;
 
+import org.markdown4j.Markdown4jProcessor;
 import org.sufficientlysecure.htmltextview.HtmlTextView;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.Log;
 
-public class HelpHtmlFragment extends Fragment {
+import java.io.IOException;
+
+public class HelpMarkdownFragment extends Fragment {
     private Activity mActivity;
 
     private int mHtmlFile;
 
-    public static final String ARG_HTML_FILE = "htmlFile";
+    public static final String ARG_MARKDOWN_RES = "htmlFile";
 
     /**
      * Create a new instance of HelpHtmlFragment, providing "htmlFile" as an argument.
      */
-    static HelpHtmlFragment newInstance(int htmlFile) {
-        HelpHtmlFragment f = new HelpHtmlFragment();
+    static HelpMarkdownFragment newInstance(int markdownRes) {
+        HelpMarkdownFragment f = new HelpMarkdownFragment();
 
         // Supply html raw file input as an argument.
         Bundle args = new Bundle();
-        args.putInt(ARG_HTML_FILE, htmlFile);
+        args.putInt(ARG_MARKDOWN_RES, markdownRes);
         f.setArguments(args);
 
         return f;
@@ -53,7 +58,7 @@ public class HelpHtmlFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         mActivity = getActivity();
 
-        mHtmlFile = getArguments().getInt(ARG_HTML_FILE);
+        mHtmlFile = getArguments().getInt(ARG_MARKDOWN_RES);
 
         ScrollView scroller = new ScrollView(mActivity);
         HtmlTextView text = new HtmlTextView(mActivity);
@@ -65,8 +70,13 @@ public class HelpHtmlFragment extends Fragment {
 
         scroller.addView(text);
 
-        // load html from raw resource (Parsing handled by HtmlTextView library)
-        text.setHtmlFromRawResource(getActivity(), mHtmlFile, true);
+        // load markdown from raw resource
+        try {
+            String html = new Markdown4jProcessor().process(getActivity().getResources().openRawResource(mHtmlFile));
+            text.setHtmlFromString(html, true);
+        } catch (IOException e) {
+            Log.e(Constants.TAG, "IOException", e);
+        }
 
         // no flickering when clicking textview for Android < 4
         text.setTextColor(getResources().getColor(android.R.color.black));
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
index 72ae1c73a..7fe5be793 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
@@ -35,10 +35,10 @@ import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry;
 import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
 import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
-import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
-import org.sufficientlysecure.keychain.ui.base.BaseActivity;
 import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
+import org.sufficientlysecure.keychain.service.CloudImportService;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.Log;
@@ -297,12 +297,13 @@ public class ImportKeysActivity extends BaseNfcActivity {
      * Import keys with mImportData
      */
     public void importKeys() {
-        // Message is received after importing is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+        // Message is received after importing is done in CloudImportService
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                 this,
                 getString(R.string.progress_importing),
                 ProgressDialog.STYLE_HORIZONTAL,
-                true) {
+                true,
+                ProgressDialogFragment.ServiceType.CLOUD_IMPORT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
@@ -345,9 +346,7 @@ public class ImportKeysActivity extends BaseNfcActivity {
             Log.d(Constants.TAG, "importKeys started");
 
             // Send all information needed to service to import key in other thread
-            Intent intent = new Intent(this, KeychainIntentService.class);
-
-            intent.setAction(KeychainIntentService.ACTION_IMPORT_KEYRING);
+            Intent intent = new Intent(this, CloudImportService.class);
 
             // fill values for this action
             Bundle data = new Bundle();
@@ -365,11 +364,11 @@ public class ImportKeysActivity extends BaseNfcActivity {
                         new ParcelableFileCache<>(this, "key_import.pcl");
                 cache.writeCache(selectedEntries);
 
-                intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+                intent.putExtra(CloudImportService.EXTRA_DATA, data);
 
                 // Create a new Messenger for the communication back
                 Messenger messenger = new Messenger(saveHandler);
-                intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+                intent.putExtra(CloudImportService.EXTRA_MESSENGER, messenger);
 
                 // show progress dialog
                 saveHandler.showProgressDialog(this);
@@ -385,14 +384,12 @@ public class ImportKeysActivity extends BaseNfcActivity {
             ImportKeysListFragment.CloudLoaderState sls = (ImportKeysListFragment.CloudLoaderState) ls;
 
             // Send all information needed to service to query keys in other thread
-            Intent intent = new Intent(this, KeychainIntentService.class);
-
-            intent.setAction(KeychainIntentService.ACTION_IMPORT_KEYRING);
+            Intent intent = new Intent(this, CloudImportService.class);
 
             // fill values for this action
             Bundle data = new Bundle();
 
-            data.putString(KeychainIntentService.IMPORT_KEY_SERVER, sls.mCloudPrefs.keyserver);
+            data.putString(CloudImportService.IMPORT_KEY_SERVER, sls.mCloudPrefs.keyserver);
 
             // get selected key entries
             ArrayList<ParcelableKeyRing> keys = new ArrayList<>();
@@ -405,13 +402,13 @@ public class ImportKeysActivity extends BaseNfcActivity {
                     );
                 }
             }
-            data.putParcelableArrayList(KeychainIntentService.IMPORT_KEY_LIST, keys);
+            data.putParcelableArrayList(CloudImportService.IMPORT_KEY_LIST, keys);
 
-            intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+            intent.putExtra(CloudImportService.EXTRA_DATA, data);
 
             // Create a new Messenger for the communication back
             Messenger messenger = new Messenger(saveHandler);
-            intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+            intent.putExtra(CloudImportService.EXTRA_MESSENGER, messenger);
 
             // show progress dialog
             saveHandler.showProgressDialog(this);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysProxyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysProxyActivity.java
index 1c1e5fe99..21747f77b 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysProxyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysProxyActivity.java
@@ -42,7 +42,8 @@ import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.operations.results.SingletonResult;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.util.IntentIntegratorSupportV4;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Preferences;
@@ -213,11 +214,12 @@ public class ImportKeysProxyActivity extends FragmentActivity {
     private void startImportService (ArrayList<ParcelableKeyRing> keyRings) {
 
         // Message is received after importing is done in KeychainIntentService
-        KeychainIntentServiceHandler serviceHandler = new KeychainIntentServiceHandler(
+        ServiceProgressHandler serviceHandler = new ServiceProgressHandler(
                 this,
                 getString(R.string.progress_importing),
                 ProgressDialog.STYLE_HORIZONTAL,
-                true) {
+                true,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java
index 5f1189deb..861ae12d9 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java
@@ -58,16 +58,21 @@ import com.getbase.floatingactionbutton.FloatingActionsMenu;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
 import org.sufficientlysecure.keychain.operations.results.ConsolidateResult;
 import org.sufficientlysecure.keychain.operations.results.DeleteResult;
+import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.pgp.KeyRing;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.service.CloudImportService;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Highlighter;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils.State;
@@ -78,6 +83,7 @@ import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Preferences;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.HashMap;
 
 import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
@@ -477,6 +483,10 @@ public class KeyListFragment extends LoaderFragment
                 mExportHelper.showExportKeysDialog(null, Constants.Path.APP_DIR_FILE, true);
                 return true;
 
+            case R.id.menu_key_list_update_all_keys:
+                updateAllKeys();
+                return true;
+
             case R.id.menu_key_list_debug_cons:
                 consolidate();
                 return true;
@@ -561,12 +571,90 @@ public class KeyListFragment extends LoaderFragment
         startActivityForResult(intent, 0);
     }
 
+    private void updateAllKeys() {
+        Context context = getActivity();
+
+        ProviderHelper providerHelper = new ProviderHelper(context);
+
+        Cursor cursor = providerHelper.getContentResolver().query(
+                KeyRings.buildUnifiedKeyRingsUri(), new String[]{
+                        KeyRings.FINGERPRINT
+                }, null, null, null
+        );
+
+        ArrayList<ParcelableKeyRing> keyList = new ArrayList<>();
+
+        while (cursor.moveToNext()) {
+            byte[] blob = cursor.getBlob(0);//fingerprint column is 0
+            String fingerprint = KeyFormattingUtils.convertFingerprintToHex(blob);
+            ParcelableKeyRing keyEntry = new ParcelableKeyRing(fingerprint, null, null);
+            keyList.add(keyEntry);
+        }
+
+        ServiceProgressHandler serviceHandler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_updating),
+                ProgressDialog.STYLE_HORIZONTAL,
+                true,
+                ProgressDialogFragment.ServiceType.CLOUD_IMPORT) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == MessageStatus.OKAY.ordinal()) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+                    if (returnData == null) {
+                        return;
+                    }
+                    final ImportKeyResult result =
+                            returnData.getParcelable(OperationResult.EXTRA_RESULT);
+                    if (result == null) {
+                        Log.e(Constants.TAG, "result == null");
+                        return;
+                    }
+
+                    result.createNotify(getActivity()).show();
+                }
+            }
+        };
+
+        // Send all information needed to service to query keys in other thread
+        Intent intent = new Intent(getActivity(), CloudImportService.class);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        // search config
+        {
+            Preferences prefs = Preferences.getPreferences(getActivity());
+            Preferences.CloudSearchPrefs cloudPrefs =
+                    new Preferences.CloudSearchPrefs(true, true, prefs.getPreferredKeyserver());
+            data.putString(CloudImportService.IMPORT_KEY_SERVER, cloudPrefs.keyserver);
+        }
+
+        data.putParcelableArrayList(CloudImportService.IMPORT_KEY_LIST, keyList);
+
+        intent.putExtra(CloudImportService.EXTRA_DATA, data);
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(serviceHandler);
+        intent.putExtra(CloudImportService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        serviceHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+
     private void consolidate() {
         // Message is received after importing is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                 getActivity(),
                 getString(R.string.progress_importing),
-                ProgressDialog.STYLE_HORIZONTAL) {
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SafeSlingerActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SafeSlingerActivity.java
index a41416a47..aa3c36d11 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SafeSlingerActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SafeSlingerActivity.java
@@ -39,8 +39,9 @@ import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.ui.base.BaseActivity;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.ParcelableFileCache;
@@ -124,11 +125,12 @@ public class SafeSlingerActivity extends BaseActivity {
             final FragmentActivity activity = SafeSlingerActivity.this;
 
             // Message is received after importing is done in KeychainIntentService
-            KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+            ServiceProgressHandler saveHandler = new ServiceProgressHandler(
                     activity,
                     getString(R.string.progress_importing),
                     ProgressDialog.STYLE_HORIZONTAL,
-                    true) {
+                    true,
+                    ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
                 public void handleMessage(Message message) {
                     // handle messages by standard KeychainIntentServiceHandler first
                     super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java
index ad13e390d..5c8e6bb5d 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java
@@ -36,8 +36,9 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.ui.base.BaseActivity;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Preferences;
 
@@ -108,8 +109,11 @@ public class UploadKeyActivity extends BaseActivity {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after uploading is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this,
-                getString(R.string.progress_uploading), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                this,
+                getString(R.string.progress_uploading),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
index fad477de3..b063df2fb 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
@@ -66,8 +66,8 @@ import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler.MessageStatus;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler.MessageStatus;
 import org.sufficientlysecure.keychain.service.PassphraseCacheService;
 import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
 import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
@@ -415,7 +415,7 @@ public class ViewKeyActivity extends BaseNfcActivity implements
 
     private void startCertifyIntent(Intent intent) {
         // Message is received after signing is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(this) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
@@ -656,7 +656,7 @@ public class ViewKeyActivity extends BaseNfcActivity implements
         entries.add(keyEntry);
 
         // Message is received after importing is done in KeychainIntentService
-        KeychainIntentServiceHandler serviceHandler = new KeychainIntentServiceHandler(this) {
+        ServiceProgressHandler serviceHandler = new ServiceProgressHandler(this) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyTrustFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyTrustFragment.java
index e20796f8f..d5870d8c5 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyTrustFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyTrustFragment.java
@@ -50,12 +50,12 @@ import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.util.Log;
 
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.Hashtable;
 import java.util.List;
 
@@ -362,23 +362,26 @@ public class ViewKeyTrustFragment extends LoaderFragment implements
 
         // Create a new Messenger for the communication back after proof work is done
         //
-        KeychainIntentServiceHandler handler = new KeychainIntentServiceHandler(getActivity(),
-                getString(R.string.progress_verifying_signature), ProgressDialog.STYLE_HORIZONTAL) {
+        ServiceProgressHandler handler = new ServiceProgressHandler(
+                getActivity(),
+                getString(R.string.progress_verifying_signature),
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
 
                 if (message.arg1 == MessageStatus.OKAY.ordinal()) {
                     Bundle returnData = message.getData();
-                    String msg = returnData.getString(KeychainIntentServiceHandler.DATA_MESSAGE);
+                    String msg = returnData.getString(ServiceProgressHandler.DATA_MESSAGE);
                     SpannableStringBuilder ssb = new SpannableStringBuilder();
 
                     if ((msg != null) && msg.equals("OK")) {
 
                         //yay
-                        String proofUrl = returnData.getString(KeychainIntentServiceHandler.KEYBASE_PROOF_URL);
-                        String presenceUrl = returnData.getString(KeychainIntentServiceHandler.KEYBASE_PRESENCE_URL);
-                        String presenceLabel = returnData.getString(KeychainIntentServiceHandler.KEYBASE_PRESENCE_LABEL);
+                        String proofUrl = returnData.getString(ServiceProgressHandler.KEYBASE_PROOF_URL);
+                        String presenceUrl = returnData.getString(ServiceProgressHandler.KEYBASE_PRESENCE_URL);
+                        String presenceLabel = returnData.getString(ServiceProgressHandler.KEYBASE_PRESENCE_LABEL);
 
                         String proofLabel;
                         switch (proof.getType()) {
@@ -429,7 +432,7 @@ public class ViewKeyTrustFragment extends LoaderFragment implements
                         ssb.append(" ").append(getString(R.string.keybase_contained_signature));
                     } else {
                         // verification failed!
-                        msg = returnData.getString(KeychainIntentServiceHandler.DATA_ERROR);
+                        msg = returnData.getString(ServiceProgressHandler.DATA_ERROR);
                         ssb.append(getString(R.string.keybase_proof_failure));
                         if (msg == null) {
                             msg = getString(R.string.keybase_unknown_proof_failure);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyYubikeyFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyYubikeyFragment.java
index 1d87bef3e..1482b70a7 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyYubikeyFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyYubikeyFragment.java
@@ -4,6 +4,7 @@ package org.sufficientlysecure.keychain.ui;
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 
+import android.app.ProgressDialog;
 import android.content.Intent;
 import android.database.Cursor;
 import android.os.Bundle;
@@ -27,7 +28,8 @@ import org.sufficientlysecure.keychain.operations.results.PromoteKeyResult;
 import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
 import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 
 
@@ -109,8 +111,7 @@ public class ViewKeyYubikeyFragment extends Fragment
 
     public void promoteToSecretKey() {
 
-        // Message is received after decrypting is done in KeychainIntentService
-        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity()) {
+        ServiceProgressHandler saveHandler = new ServiceProgressHandler(getActivity()) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteKeyDialogFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteKeyDialogFragment.java
index f512ecca2..581a96e52 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteKeyDialogFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteKeyDialogFragment.java
@@ -37,7 +37,7 @@ import org.sufficientlysecure.keychain.pgp.KeyRing;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
 import org.sufficientlysecure.keychain.util.Log;
 
 import java.util.HashMap;
@@ -135,9 +135,12 @@ public class DeleteKeyDialogFragment extends DialogFragment {
                 intent.setAction(KeychainIntentService.ACTION_DELETE);
 
                 // Message is received after importing is done in KeychainIntentService
-                KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
-                        getActivity(), getString(R.string.progress_deleting),
-                        ProgressDialog.STYLE_HORIZONTAL, true) {
+                ServiceProgressHandler saveHandler = new ServiceProgressHandler(
+                        getActivity(),
+                        getString(R.string.progress_deleting),
+                        ProgressDialog.STYLE_HORIZONTAL,
+                        true,
+                        ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
                     @Override
                     public void handleMessage(Message message) {
                         super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ProgressDialogFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ProgressDialogFragment.java
index df7943f55..b58f584c8 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ProgressDialogFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ProgressDialogFragment.java
@@ -32,23 +32,43 @@ import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 
+import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.service.CloudImportService;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.util.Log;
 
 public class ProgressDialogFragment extends DialogFragment {
     private static final String ARG_MESSAGE = "message";
     private static final String ARG_STYLE = "style";
     private static final String ARG_CANCELABLE = "cancelable";
+    private static final String ARG_SERVICE_TYPE = "service_class";
+
+    public static enum ServiceType {
+        KEYCHAIN_INTENT,
+        CLOUD_IMPORT
+    }
+
+    ServiceType mServiceType;
 
     boolean mCanCancel = false, mPreventCancel = false, mIsCancelled = false;
 
-    /** Creates new instance of this fragment */
-    public static ProgressDialogFragment newInstance(String message, int style, boolean cancelable) {
+    /**
+     * creates a new instance of this fragment
+     * @param message the message to be displayed initially above the progress bar
+     * @param style the progress bar style, as defined in ProgressDialog (horizontal or spinner)
+     * @param cancelable should we let the user cancel this operation
+     * @param serviceType which Service this progress dialog is meant for
+     * @return
+     */
+    public static ProgressDialogFragment newInstance(String message, int style, boolean cancelable,
+                                                     ServiceType serviceType) {
         ProgressDialogFragment frag = new ProgressDialogFragment();
         Bundle args = new Bundle();
         args.putString(ARG_MESSAGE, message);
         args.putInt(ARG_STYLE, style);
         args.putBoolean(ARG_CANCELABLE, cancelable);
+        args.putSerializable(ARG_SERVICE_TYPE, serviceType);
 
         frag.setArguments(args);
 
@@ -106,6 +126,7 @@ public class ProgressDialogFragment extends DialogFragment {
         String message = getArguments().getString(ARG_MESSAGE);
         int style = getArguments().getInt(ARG_STYLE);
         mCanCancel = getArguments().getBoolean(ARG_CANCELABLE);
+        mServiceType = (ServiceType) getArguments().getSerializable(ARG_SERVICE_TYPE);
 
         dialog.setMessage(message);
         dialog.setProgressStyle(style);
@@ -175,9 +196,22 @@ public class ProgressDialogFragment extends DialogFragment {
                 // send a cancel message. note that this message will be handled by
                 // KeychainIntentService.onStartCommand, which runs in this thread,
                 // not the service one, and will not queue up a command.
-                Intent intent = new Intent(getActivity(), KeychainIntentService.class);
-                intent.setAction(KeychainIntentService.ACTION_CANCEL);
-                getActivity().startService(intent);
+                Intent serviceIntent = null;
+
+                switch (mServiceType) {
+                    case CLOUD_IMPORT:
+                        serviceIntent = new Intent(getActivity(), CloudImportService.class);
+                        break;
+                    case KEYCHAIN_INTENT:
+                        serviceIntent = new Intent(getActivity(), KeychainIntentService.class);
+                        break;
+                    default:
+                        //should never happen, unless we forget to include a ServiceType enum case
+                        Log.e(Constants.TAG, "Unrecognized ServiceType at ProgressDialogFragment");
+                }
+
+                serviceIntent.setAction(KeychainIntentService.ACTION_CANCEL);
+                getActivity().startService(serviceIntent);
             }
         });
 
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java
index 7b164f2b2..7efb7c5af 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java
@@ -19,9 +19,7 @@ package org.sufficientlysecure.keychain.util;
 
 import android.app.ProgressDialog;
 import android.content.Intent;
-import android.net.Uri;
 import android.os.Bundle;
-import android.os.Handler;
 import android.os.Message;
 import android.os.Messenger;
 import android.support.v4.app.FragmentActivity;
@@ -29,11 +27,9 @@ import android.support.v4.app.FragmentActivity;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.ExportResult;
-import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
-import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
-import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
-import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
+import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
 
 import java.io.File;
 
@@ -102,9 +98,10 @@ public class ExportHelper {
         intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
 
         // Message is received after exporting is done in KeychainIntentService
-        KeychainIntentServiceHandler exportHandler = new KeychainIntentServiceHandler(mActivity,
+        ServiceProgressHandler exportHandler = new ServiceProgressHandler(mActivity,
                 mActivity.getString(R.string.progress_exporting),
-                ProgressDialog.STYLE_HORIZONTAL) {
+                ProgressDialog.STYLE_HORIZONTAL,
+                ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
             public void handleMessage(Message message) {
                 // handle messages by standard KeychainIntentServiceHandler first
                 super.handleMessage(message);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ParcelableFileCache.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ParcelableFileCache.java
index 6f9cb277e..5a314ad0b 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ParcelableFileCache.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ParcelableFileCache.java
@@ -83,10 +83,22 @@ public class ParcelableFileCache<E extends Parcelable> {
 
     }
 
+    /**
+     * Reads from cache file and deletes it afterward. Convenience function for readCache(boolean).
+     * @return an IteratorWithSize object containing entries read from the cache file
+     * @throws IOException
+     */
     public IteratorWithSize<E> readCache() throws IOException {
         return readCache(true);
     }
 
+    /**
+     * Reads entries from a cache file and returns an IteratorWithSize object containing the entries
+     * @param deleteAfterRead if true, the cache file will be deleted after being read
+     * @return an IteratorWithSize object containing entries read from the cache file
+     * @throws IOException if cache directory/parcel import file does not exist, or a read error
+     * occurs
+     */
     public IteratorWithSize<E> readCache(final boolean deleteAfterRead) throws IOException {
 
         File cacheDir = mContext.getCacheDir();