master merge

4 files changed, 969 insertions, 0 deletions

diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java
new file mode 100644
index 000000000..dd642d879
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.demo;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceClickListener;
+import android.preference.PreferenceActivity;
+import android.widget.Toast;
+
+public class BaseActivity extends PreferenceActivity {
+    private Preference mIntentDemo;
+    private Preference mCryptoProvider;
+
+    /**
+     * Called when the activity is first created.
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // load preferences from xml
+        addPreferencesFromResource(R.xml.base_preference);
+
+        // find preferences
+        mIntentDemo = (Preference) findPreference("intent_demo");
+        mCryptoProvider = (Preference) findPreference("openpgp_provider_demo");
+
+        mIntentDemo.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                startActivity(new Intent(BaseActivity.this, IntentActivity.class));
+
+                return false;
+            }
+        });
+
+        mCryptoProvider.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                startActivity(new Intent(BaseActivity.this, OpenPgpProviderActivity.class));
+
+                return false;
+            }
+        });
+    }
+
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java
new file mode 100644
index 000000000..acff12f47
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.demo;
+
+public final class Constants {
+    public static final String TAG = "Keychain";
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/IntentActivity.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/IntentActivity.java
new file mode 100644
index 000000000..fdcabaf7c
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/IntentActivity.java
@@ -0,0 +1,583 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.demo;
+
+import android.content.ActivityNotFoundException;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceClickListener;
+import android.preference.PreferenceActivity;
+import android.provider.MediaStore;
+import android.util.Log;
+import android.widget.Toast;
+
+import org.sufficientlysecure.keychain.api.OpenKeychainIntents;
+
+import java.io.UnsupportedEncodingException;
+
+public class IntentActivity extends PreferenceActivity {
+    private Preference mEncrypt;
+    private Preference mEncryptUri;
+    private Preference mDecrypt;
+    private Preference mImportKey;
+    private Preference mImportKeyFromKeyserver;
+    private Preference mImportKeyFromQrCode;
+    private Preference mOpenpgp4fpr;
+
+    private static final int REQUEST_CODE_SELECT_PHOTO = 100;
+
+    /**
+     * Called when the activity is first created.
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // load preferences from xml
+        addPreferencesFromResource(R.xml.intent_preference);
+
+        // find preferences
+        mEncrypt = (Preference) findPreference("ENCRYPT");
+        mEncryptUri = (Preference) findPreference("ENCRYPT_URI");
+        mDecrypt = (Preference) findPreference("DECRYPT");
+        mImportKey = (Preference) findPreference("IMPORT_KEY");
+        mImportKeyFromKeyserver = (Preference) findPreference("IMPORT_KEY_FROM_KEYSERVER");
+        mImportKeyFromQrCode = (Preference) findPreference("IMPORT_KEY_FROM_QR_CODE");
+        mOpenpgp4fpr = (Preference) findPreference("openpgp4fpr");
+
+
+        mEncrypt.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(OpenKeychainIntents.ENCRYPT);
+                    intent.putExtra(OpenKeychainIntents.ENCRYPT_EXTRA_TEXT, "Hello world!");
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+        mEncryptUri.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
+                photoPickerIntent.setType("image/*");
+                startActivityForResult(photoPickerIntent, REQUEST_CODE_SELECT_PHOTO);
+
+                return false;
+            }
+        });
+
+        mDecrypt.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(OpenKeychainIntents.DECRYPT);
+                    intent.putExtra(OpenKeychainIntents.DECRYPT_EXTRA_TEXT, TEST_SIGNED_MESSAGE);
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+        mImportKey.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(OpenKeychainIntents.IMPORT_KEY);
+                    byte[] pubkey = null;
+                    try {
+                        pubkey = TEST_PUBKEY.getBytes("UTF-8");
+                    } catch (UnsupportedEncodingException e) {
+                        e.printStackTrace();
+                    }
+                    intent.putExtra(OpenKeychainIntents.IMPORT_KEY_EXTRA_KEY_BYTES, pubkey);
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+        mImportKeyFromKeyserver.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(OpenKeychainIntents.IMPORT_KEY_FROM_KEYSERVER);
+                    intent.putExtra(OpenKeychainIntents.IMPORT_KEY_FROM_KEYSERVER_QUERY, "Richard Stallman");
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+        mImportKeyFromQrCode.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(OpenKeychainIntents.IMPORT_KEY_FROM_QR_CODE);
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+        mOpenpgp4fpr.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                try {
+                    Intent intent = new Intent(Intent.ACTION_VIEW);
+                    intent.setData(Uri.parse("openpgp4fpr:73EE2314F65FA92EC2390D3A718C070100012282"));
+                    startActivity(intent);
+                } catch (ActivityNotFoundException e) {
+                    Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                }
+
+                return false;
+            }
+        });
+
+
+    }
+
+    protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
+        super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
+
+        switch (requestCode) {
+            case REQUEST_CODE_SELECT_PHOTO:
+                if (resultCode == RESULT_OK) {
+                    Uri selectedImage = imageReturnedIntent.getData();
+
+                    String[] filePathColumn = {MediaStore.Images.Media.DATA};
+
+                    Cursor cursor = getContentResolver().query(
+                            selectedImage, filePathColumn, null, null, null);
+                    cursor.moveToFirst();
+
+                    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
+                    String filePath = cursor.getString(columnIndex);
+                    cursor.close();
+
+                    // TODO: after fixing DECRYPT, we could use Uri selectedImage directly
+                    Log.d(Constants.TAG, "filePath: " + filePath);
+
+                    try {
+                        Intent intent = new Intent(OpenKeychainIntents.ENCRYPT);
+                        Uri dataUri = Uri.parse("file://" + filePath);
+                        Log.d(Constants.TAG, "Uri: " + dataUri);
+                        intent.setData(dataUri);
+                        startActivity(intent);
+                    } catch (ActivityNotFoundException e) {
+                        Toast.makeText(IntentActivity.this, "Activity not found!", Toast.LENGTH_LONG).show();
+                    }
+                }
+        }
+    }
+
+    private static final String TEST_SIGNED_MESSAGE = "-----BEGIN PGP SIGNED MESSAGE-----\n" +
+            "Hash: SHA1\n" +
+            "\n" +
+            "Hello world!\n" +
+            "-----BEGIN PGP SIGNATURE-----\n" +
+            "Version: GnuPG v1.4.12 (GNU/Linux)\n" +
+            "Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/\n" +
+            "\n" +
+            "iQEcBAEBAgAGBQJS/7vTAAoJEHGMBwEAASKCkGYH/2jBLzamVyqd61jrjMQM0jUv\n" +
+            "MkDcPUxPrYH3wZOO0HcgdBQEo66GZEC2ATmo8izJUMk35Q5jas99k0ac9pXhPUPE\n" +
+            "5qDXdQS10S07R6J0SeDYFWDSyrSiDTCZpFkVu3JGP/3S0SkMYXPzfYlh8Ciuxu7i\n" +
+            "FR5dmIiz3VQaBgTBSCBFEomNFM5ypynBJqKIzIty8v0NbV72Rtg6Xg76YqWQ/6MC\n" +
+            "/MlT3y3++HhfpEmLf5WLEXljbuZ4SfCybgYXG9gBzhJu3+gmBoSicdYTZDHSxBBR\n" +
+            "BwI+ueLbhgRz+gU+WJFE7xNw35xKtBp1C4PR0iKI8rZCSHLjsRVzor7iwDaR51M=\n" +
+            "=3Ydc\n" +
+            "-----END PGP SIGNATURE-----";
+
+    private static final String TEST_PUBKEY = "-----BEGIN PGP PUBLIC KEY BLOCK-----\n" +
+            "Version: GnuPG v1.4.12 (GNU/Linux)\n" +
+            "\n" +
+            "mQENBEuG/qABCACZeLHynGVXn7Ou6MKE2GzSTGPWGrA86uHwHPUbbTUR7tYTUWeA\n" +
+            "Ur+l+lR3GRTbcQY4ColGUcDcTVlW/cp9jhHnbbSIS0uJvW+4yu3I5eSIIoI09PLY\n" +
+            "KjT0U5l2z6t6daL7qWfZ1pQkCuCMe43eMLBPvyao1+zEd1zESbMz/bySZRlYMKAC\n" +
+            "aD9pGnFHS+EOU+lQXxfzCpKEQcHmPrrBFh2Gr2JFWWjZArKh7B1lQLekD2KS8aFb\n" +
+            "Lg1WGo5tK1sSk6MnMmqs1zNw1n15p5UDnJ7Qh8ecfMyDLy/ZyUjfFjy4BE0p+4mS\n" +
+            "J5iDU0pTYK3BpdfujY6NE+S2Ca2J6QoNRN8XABEBAAG0MURvbWluaWsgU2Now7xy\n" +
+            "bWFubiA8ZG9taW5pa0Bkb21pbmlrc2NodWVybWFubi5kZT6JAT8EEwECACkCGyMF\n" +
+            "CQlmAYAGCwkIBwMCBBUCCAMEFgIDAQIeAQIXgAUCS4b/ZQIZAQAKCRBxjAcBAAEi\n" +
+            "gjHWB/9w+D8DOxOGeUzNxfGn98C1nYVkt8zNcTnODBd8VsaPx1pKOXUu6IfqaTxa\n" +
+            "qS4hsAmgV9l0xLA2CkRndZAangsl3ZwURh8UiX/uqJRA9c9py7O+8GxpARtwtOPQ\n" +
+            "VxXx/O8vkXxFpYsFzpotN5XlGkLWWVySotKbTcSfaBifcS3oFT+d6VAZ/D68iTaH\n" +
+            "YBRfwaganevuqUsrJQiCOX11d6Lnr5cDzvmR2yagsLZPUi3CI02bVZYH99uNAr8b\n" +
+            "O7OkrgbcN7U5VlMuXdzj5fU43QpAzrT11JY9jmYsxbJ3t0Zgb5tnGXq9UBkPgGKC\n" +
+            "T01QW7aKHBN5YeDtOY1d0DQMNLkKiQEcBBMBAgAGBQJL/m2NAAoJENjTIPvvLEnw\n" +
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+            "-----END PGP PUBLIC KEY BLOCK-----\n";
+
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java
new file mode 100644
index 000000000..21eca36d6
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java
@@ -0,0 +1,302 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.demo;
+
+import android.app.Activity;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.content.IntentSender;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import org.openintents.openpgp.OpenPgpError;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.openintents.openpgp.util.OpenPgpApi;
+import org.openintents.openpgp.util.OpenPgpConstants;
+import org.openintents.openpgp.util.OpenPgpServiceConnection;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.UnsupportedEncodingException;
+
+public class OpenPgpProviderActivity extends Activity {
+    private EditText mMessage;
+    private EditText mCiphertext;
+    private EditText mEncryptUserIds;
+    private Button mSign;
+    private Button mEncrypt;
+    private Button mSignAndEncrypt;
+    private Button mDecryptAndVerify;
+
+    private OpenPgpServiceConnection mServiceConnection;
+
+    public static final int REQUEST_CODE_SIGN = 9910;
+    public static final int REQUEST_CODE_ENCRYPT = 9911;
+    public static final int REQUEST_CODE_SIGN_AND_ENCRYPT = 9912;
+    public static final int REQUEST_CODE_DECRYPT_AND_VERIFY = 9913;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setContentView(R.layout.openpgp_provider);
+
+        mMessage = (EditText) findViewById(R.id.crypto_provider_demo_message);
+        mCiphertext = (EditText) findViewById(R.id.crypto_provider_demo_ciphertext);
+        mEncryptUserIds = (EditText) findViewById(R.id.crypto_provider_demo_encrypt_user_id);
+        mSign = (Button) findViewById(R.id.crypto_provider_demo_sign);
+        mEncrypt = (Button) findViewById(R.id.crypto_provider_demo_encrypt);
+        mSignAndEncrypt = (Button) findViewById(R.id.crypto_provider_demo_sign_and_encrypt);
+        mDecryptAndVerify = (Button) findViewById(R.id.crypto_provider_demo_decrypt_and_verify);
+
+        mSign.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sign(new Bundle());
+            }
+        });
+        mEncrypt.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                encrypt(new Bundle());
+            }
+        });
+        mSignAndEncrypt.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                signAndEncrypt(new Bundle());
+            }
+        });
+        mDecryptAndVerify.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptAndVerify(new Bundle());
+            }
+        });
+
+        SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
+        String providerPackageName = settings.getString("openpgp_provider_list", "");
+        if (TextUtils.isEmpty(providerPackageName)) {
+            Toast.makeText(this, "No OpenPGP Provider selected!", Toast.LENGTH_LONG).show();
+            finish();
+        } else {
+            // bind to service
+            mServiceConnection = new OpenPgpServiceConnection(
+                    OpenPgpProviderActivity.this, providerPackageName);
+            mServiceConnection.bindToService();
+        }
+    }
+
+    private void handleError(final OpenPgpError error) {
+        runOnUiThread(new Runnable() {
+
+            @Override
+            public void run() {
+                Toast.makeText(OpenPgpProviderActivity.this,
+                        "onError id:" + error.getErrorId() + "\n\n" + error.getMessage(),
+                        Toast.LENGTH_LONG).show();
+                Log.e(Constants.TAG, "onError getErrorId:" + error.getErrorId());
+                Log.e(Constants.TAG, "onError getMessage:" + error.getMessage());
+            }
+        });
+    }
+
+    private void handleSignature(final OpenPgpSignatureResult sigResult) {
+        runOnUiThread(new Runnable() {
+
+            @Override
+            public void run() {
+                Toast.makeText(OpenPgpProviderActivity.this,
+                        sigResult.toString(),
+                        Toast.LENGTH_LONG).show();
+            }
+        });
+    }
+
+    /**
+     * Takes input from message or ciphertext EditText and turns it into a ByteArrayInputStream
+     *
+     * @param ciphertext
+     * @return
+     */
+    private InputStream getInputstream(boolean ciphertext) {
+        InputStream is = null;
+        try {
+            String inputStr = null;
+            if (ciphertext) {
+                inputStr = mCiphertext.getText().toString();
+            } else {
+                inputStr = mMessage.getText().toString();
+            }
+            is = new ByteArrayInputStream(inputStr.getBytes("UTF-8"));
+        } catch (UnsupportedEncodingException e) {
+            Log.e(Constants.TAG, "UnsupportedEncodingException", e);
+        }
+
+        return is;
+    }
+
+    private class MyCallback implements OpenPgpApi.IOpenPgpCallback {
+        boolean returnToCiphertextField;
+        ByteArrayOutputStream os;
+        int requestCode;
+
+        private MyCallback(boolean returnToCiphertextField, ByteArrayOutputStream os, int requestCode) {
+            this.returnToCiphertextField = returnToCiphertextField;
+            this.os = os;
+            this.requestCode = requestCode;
+        }
+
+        @Override
+        public void onReturn(Bundle result) {
+            switch (result.getInt(OpenPgpConstants.RESULT_CODE)) {
+                case OpenPgpConstants.RESULT_CODE_SUCCESS: {
+                    try {
+                        Log.d(OpenPgpConstants.TAG, "result: " + os.toByteArray().length
+                                + " str=" + os.toString("UTF-8"));
+
+                        if (returnToCiphertextField) {
+                            mCiphertext.setText(os.toString("UTF-8"));
+                        } else {
+                            mMessage.setText(os.toString("UTF-8"));
+                        }
+                    } catch (UnsupportedEncodingException e) {
+                        Log.e(Constants.TAG, "UnsupportedEncodingException", e);
+                    }
+
+                    if (result.getBoolean(OpenPgpConstants.RESULT_SIGNATURE, false)) {
+                        OpenPgpSignatureResult sigResult
+                                = result.getParcelable(OpenPgpConstants.RESULT_SIGNATURE);
+                        handleSignature(sigResult);
+                    }
+                    break;
+                }
+                case OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED: {
+                    PendingIntent pi = result.getParcelable(OpenPgpConstants.RESULT_INTENT);
+                    try {
+                        OpenPgpProviderActivity.this.startIntentSenderForResult(pi.getIntentSender(),
+                                requestCode, null, 0, 0, 0);
+                    } catch (IntentSender.SendIntentException e) {
+                        Log.e(Constants.TAG, "SendIntentException", e);
+                    }
+                    break;
+                }
+                case OpenPgpConstants.RESULT_CODE_ERROR: {
+                    OpenPgpError error = result.getParcelable(OpenPgpConstants.RESULT_ERRORS);
+                    handleError(error);
+                    break;
+                }
+            }
+        }
+    }
+
+    public void sign(Bundle params) {
+        params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true);
+
+        InputStream is = getInputstream(false);
+        final ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+        OpenPgpApi api = new OpenPgpApi(this, mServiceConnection.getService());
+        api.sign(params, is, os, new MyCallback(true, os, REQUEST_CODE_SIGN));
+    }
+
+    public void encrypt(Bundle params) {
+        params.putStringArray(OpenPgpConstants.PARAMS_USER_IDS, mEncryptUserIds.getText().toString().split(","));
+        params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true);
+
+        InputStream is = getInputstream(false);
+        final ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+        OpenPgpApi api = new OpenPgpApi(this, mServiceConnection.getService());
+        api.encrypt(params, is, os, new MyCallback(true, os, REQUEST_CODE_ENCRYPT));
+    }
+
+    public void signAndEncrypt(Bundle params) {
+        params.putStringArray(OpenPgpConstants.PARAMS_USER_IDS, mEncryptUserIds.getText().toString().split(","));
+        params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true);
+
+        InputStream is = getInputstream(false);
+        final ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+        OpenPgpApi api = new OpenPgpApi(this, mServiceConnection.getService());
+        api.signAndEncrypt(params, is, os, new MyCallback(true, os, REQUEST_CODE_SIGN_AND_ENCRYPT));
+    }
+
+    public void decryptAndVerify(Bundle params) {
+        params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true);
+
+        InputStream is = getInputstream(true);
+        final ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+        OpenPgpApi api = new OpenPgpApi(this, mServiceConnection.getService());
+        api.decryptAndVerify(params, is, os, new MyCallback(false, os, REQUEST_CODE_DECRYPT_AND_VERIFY));
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        Log.d(Constants.TAG, "onActivityResult resultCode: " + resultCode);
+
+        // try again after user interaction
+        if (resultCode == RESULT_OK) {
+            /*
+             * The params originally given to the pgp method are are again
+             * returned here to be used when calling again after user interaction.
+             *
+             * They also contain results from the user interaction which happened,
+             * for example selected key ids.
+             */
+            Bundle params = data.getBundleExtra(OpenPgpConstants.PI_RESULT_PARAMS);
+
+            switch (requestCode) {
+                case REQUEST_CODE_SIGN: {
+                    sign(params);
+                    break;
+                }
+                case REQUEST_CODE_ENCRYPT: {
+                    encrypt(params);
+                    break;
+                }
+                case REQUEST_CODE_SIGN_AND_ENCRYPT: {
+                    signAndEncrypt(params);
+                    break;
+                }
+                case REQUEST_CODE_DECRYPT_AND_VERIFY: {
+                    decryptAndVerify(params);
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        if (mServiceConnection != null) {
+            mServiceConnection.unbindFromService();
+        }
+    }
+
+}