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
index 81f9eee68..39843eb82 100644
--- 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
@@ -18,11 +18,14 @@ package org.sufficientlysecure.keychain.demo;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.app.PendingIntent;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.IntentSender;
 import android.content.pm.ResolveInfo;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
+import android.support.v4.app.TaskStackBuilder;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
@@ -54,6 +57,11 @@ public class OpenPgpProviderActivity extends Activity {
 
     private OpenPgpServiceConnection mCryptoServiceConnection;
 
+    public static final int REQUEST_CODE_SIGN = 9910;
+    public static final int REQUEST_CODE_ENCRYPT = 9911;
+    public static final int REQUEST_CODE_SIGN_AND_ENC = 9912;
+    public static final int REQUEST_CODE_DECRYPT = 9913;
+
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
@@ -210,30 +218,60 @@ public class OpenPgpProviderActivity extends Activity {
     }
 
     public void signOnClick(View view) {
+        InputStream is = null;
         try {
             String inputStr = mMessage.getText().toString();
-            InputStream is = new ByteArrayInputStream(inputStr.getBytes("UTF-8"));
+            is = new ByteArrayInputStream(inputStr.getBytes("UTF-8"));
 
-            final ByteArrayOutputStream os = new ByteArrayOutputStream();
-
-            OpenPgpApi api = new OpenPgpApi(mCryptoServiceConnection.getService());
-            api.sign(is, os);
-
-            Log.d(OpenPgpConstants.TAG, "Test #1 read result: " + os.toByteArray().length
-                    + " str=" + os.toString("UTF-8"));
-
-            mCiphertext.setText(os.toString("UTF-8"));
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         }
-//        OpenPgpData input = new OpenPgpData(inputStr);
+        final ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+        OpenPgpApi api = new OpenPgpApi(mCryptoServiceConnection.getService());
+        api.sign(new Bundle(), is, os, new OpenPgpApi.IOpenPgpCallback() {
+            @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"));
+
+                            mCiphertext.setText(os.toString("UTF-8"));
+                        } catch (UnsupportedEncodingException e) {
+                            e.printStackTrace();
+                        }
+                        break;
+                    }
+                    case OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED: {
+                        PendingIntent pi = result.getParcelable(OpenPgpConstants.RESULT_INTENT);
+                        try {
+                            OpenPgpProviderActivity.this.startIntentSenderForResult(pi.getIntentSender(),
+                                    REQUEST_CODE_SIGN, null, // or new Intent() (in billing)
+                                    0, 0, 0);
+                        } catch (IntentSender.SendIntentException e) {
+                            e.printStackTrace();
+                        }
+//                        try {
+//                            pi.send(OpenPgpProviderActivity.this, 42, null, new PendingIntent.OnFinished() {
 //
-//        try {
-//            mCryptoServiceConnection.getService().sign(input,
-//                    new OpenPgpData(OpenPgpData.TYPE_STRING), encryptCallback);
-//        } catch (RemoteException e) {
-//            Log.e(Constants.TAG, "CryptoProviderDemo", e);
-//        }
+//                                @Override
+//                                public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, String resultData, Bundle resultExtras) {
+//                                    Log.d(Constants.TAG, "onSendFinished");
+//                                    Log.d(Constants.TAG, "resultCode: " + resultCode);
+//
+//                                }
+//                            }, null);
+//                        } catch (PendingIntent.CanceledException e) {
+//                            e.printStackTrace();
+//                        }
+                        break;
+                    }
+                }
+            }
+        });
+
     }
 
     public void signAndEncryptOnClick(View view) {
@@ -258,6 +296,21 @@ public class OpenPgpProviderActivity extends Activity {
 //        }
     }
 
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+//        super.onActivityResult(requestCode, resultCode, data);
+        Log.d(Constants.TAG, "onActivityResult");
+        switch (requestCode) {
+            case REQUEST_CODE_SIGN: {
+                Log.d(Constants.TAG, "resultCode: " + resultCode);
+
+                if (resultCode == RESULT_OK) {
+                    signOnClick(null);
+                }
+            }
+        }
+    }
+
     @Override
     public void onDestroy() {
         super.onDestroy();
diff --git a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
index ef390a7f6..714ca040e 100644
--- a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
+++ b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
@@ -23,145 +23,52 @@ import org.openintents.openpgp.IOpenPgpKeyIdsCallback;
 interface IOpenPgpService {
 
     /**
-     * Bundle params:
-     * api_version 1,2,3,... (current: 1)
-     * ascii_armor true/false (for output)
-     * key_ids long[] (for encrypt method)
+     * General extras
+     * --------------
+     * 
+     * params:
+     * int                      api_version         (current: 1)
+     * boolean                  ascii_armor         true/false (for output)
      *
      *
      * Bundle return:
-     * result_code RESULT_ERROR=0 (see error), RESULT_OK=1, RESULT_USER_INTERACTION_REQUIRED=2 (execute intent and do it again with params from intent)
-     * signature_result OpenPgpSignatureResult
-     * error OpenPgpError
-     * intent Intent
+     * int                      result_code         0,1, or 2 (see OpenPgpConstants)
+     * OpenPgpSignatureResult   signature_result
+     * OpenPgpError             error
+     * Intent                   intent
      *
      */
 
+    /**
+     * sign only
+     *
+     * params:
+     * String       passphrase (optional)
+     */
     Bundle sign(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
+    /**
+     * encrypt
+     *
+     * params:
+     * long[]       key_ids
+     * or
+     * String[]     user_ids (= emails of recipients) (if more than one key has this user_id, an Intent is returned)
+     */
     Bundle encrypt(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
+    /**
+     * sign and encrypt
+     *
+     * params:
+     * same as in encrypt()
+     */
     Bundle signAndEncrypt(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
-    Bundle decryptAndVerify(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
-
-
-/*
-    ------------------OLD--------------------------
-*/
-    /**
-     * Sign
-     * 
-     * After successful signing, callback's onSuccess will contain the resulting output.
-     *
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void sign(in OpenPgpData input, in OpenPgpData output, in IOpenPgpCallback callback);
-
-
-    /**
-     * Encrypt
-     * 
-     * After successful encryption, callback's onSuccess will contain the resulting output.
-     * 
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param keyIds
-     *            Key Ids of recipients. Can be retrieved with getKeyIds()
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void encrypt(in OpenPgpData input, in OpenPgpData output, in long[] keyIds, in IOpenPgpCallback callback);
-    
-    /**
-     * Sign then encrypt
-     * 
-     * After successful signing and encryption, callback's onSuccess will contain the resulting output.
-     *
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param keyIds
-     *            Key Ids of recipients. Can be retrieved with getKeyIds()
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void signAndEncrypt(in OpenPgpData input, in OpenPgpData output, in long[] keyIds, in IOpenPgpCallback callback);
-    
     /**
      * Decrypts and verifies given input bytes. This methods handles encrypted-only, signed-and-encrypted,
      * and also signed-only input.
-     * 
-     * After successful decryption/verification, callback's onSuccess will contain the resulting output.
-     * The signatureResult in onSuccess is only non-null if signed-and-encrypted or signed-only inputBytes were given.
-     * 
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param callback
-     *            Callback where to return results
      */
-    //oneway void decryptAndVerify(in OpenPgpData input, in OpenPgpData output, in IOpenPgpCallback callback);
-    
-    /**
-     * Get available key ids based on given user ids
-     *
-     * @param ids
-     *            User Ids (emails) of recipients OR key ids
-     * @param allowUserInteraction
-     *            Enable user interaction to lookup and import unknown keys
-     * @param callback
-     *            Callback where to return results (different type than callback in other functions!)
-     */
-    //oneway void getKeyIds(in String[] ids, in boolean allowUserInteraction, in IOpenPgpKeyIdsCallback callback);
-    
+    Bundle decryptAndVerify(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
+
 }
\ No newline at end of file
diff --git a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
index d490bca0c..adb187c04 100644
--- a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
+++ b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
@@ -16,15 +16,14 @@
 
 package org.openintents.openpgp.util;
 
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
-import android.os.RemoteException;
 import android.util.Log;
 
 import org.openintents.openpgp.IOpenPgpService;
 import org.openintents.openpgp.OpenPgpError;
 
-import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 
@@ -32,11 +31,98 @@ public class OpenPgpApi {
 
     IOpenPgpService mService;
 
+    private static final int OPERATION_SIGN = 0;
+    private static final int OPERATION_ENCRYPT = 1;
+    private static final int OPERATION_SIGN_ENCRYPT = 2;
+    private static final int OPERATION_DECRYPT_VERIFY = 3;
+
     public OpenPgpApi(IOpenPgpService service) {
         this.mService = service;
     }
 
     public Bundle sign(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN, new Bundle(), is, os);
+    }
+
+    public Bundle sign(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN, params, is, os);
+    }
+
+    public void sign(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_SIGN, params, is, os, callback);
+    }
+
+    public Bundle encrypt(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_ENCRYPT, new Bundle(), is, os);
+    }
+
+    public Bundle encrypt(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_ENCRYPT, params, is, os);
+    }
+
+    public void encrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_ENCRYPT, params, is, os, callback);
+    }
+
+    public Bundle signAndEncrypt(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN_ENCRYPT, new Bundle(), is, os);
+    }
+
+    public Bundle signAndEncrypt(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN_ENCRYPT, params, is, os);
+    }
+
+    public void signAndEncrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_SIGN_ENCRYPT, params, is, os, callback);
+    }
+
+    public Bundle decryptAndVerify(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_DECRYPT_VERIFY, new Bundle(), is, os);
+    }
+
+    public Bundle decryptAndVerify(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_DECRYPT_VERIFY, params, is, os);
+    }
+
+    public void decryptAndVerify(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_DECRYPT_VERIFY, params, is, os, callback);
+    }
+
+    public interface IOpenPgpCallback {
+        void onReturn(final Bundle result);
+    }
+
+    private class OpenPgpAsyncTask extends AsyncTask<Void, Integer, Bundle> {
+        int operationId;
+        Bundle params;
+        InputStream is;
+        OutputStream os;
+        IOpenPgpCallback callback;
+
+        private OpenPgpAsyncTask(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
+            this.operationId = operationId;
+            this.params = params;
+            this.is = is;
+            this.os = os;
+            this.callback = callback;
+        }
+
+        @Override
+        protected Bundle doInBackground(Void... unused) {
+            return executeApi(operationId, params, is, os);
+        }
+
+        protected void onPostExecute(Bundle result) {
+            callback.onReturn(result);
+        }
+
+    }
+
+    private void executeApiAsync(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
+        new OpenPgpAsyncTask(operationId, params, is, os, callback).execute((Void[]) null);
+    }
+
+    private Bundle executeApi(int operationId, Bundle params, InputStream is, OutputStream os) {
         try {
             // send the input and output pfds
             ParcelFileDescriptor input = ParcelFileDescriptorUtil.pipeFrom(is,
@@ -56,24 +142,35 @@ public class OpenPgpApi {
                         }
                     });
 
-            Bundle params = new Bundle();
             params.putInt(OpenPgpConstants.PARAMS_API_VERSION, OpenPgpConstants.API_VERSION);
 
+            // default result is error
+            Bundle result = new Bundle();
+            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
+            result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
+                    new OpenPgpError(OpenPgpError.GENERIC_ERROR, "This should never happen!"));
+
             // blocks until result is ready
-            Bundle result = mService.sign(params, input, output);
+            switch (operationId) {
+                case OPERATION_SIGN:
+                    result = mService.sign(params, input, output);
+                    break;
+                case OPERATION_ENCRYPT:
+                    result = mService.encrypt(params, input, output);
+                    break;
+                case OPERATION_SIGN_ENCRYPT:
+                    result = mService.signAndEncrypt(params, input, output);
+                    break;
+                case OPERATION_DECRYPT_VERIFY:
+                    result = mService.decryptAndVerify(params, input, output);
+                    break;
+            }
             // close() is required to halt the TransferThread
             output.close();
 
             return result;
-        } catch (RemoteException e) {
-            Log.e(OpenPgpConstants.TAG, "RemoteException", e);
-            Bundle result = new Bundle();
-            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
-            result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
-                    new OpenPgpError(OpenPgpError.CLIENT_SIDE_ERROR, e.getMessage()));
-            return result;
-        } catch (IOException e) {
-            Log.e(OpenPgpConstants.TAG, "IOException", e);
+        } catch (Exception e) {
+            Log.e(OpenPgpConstants.TAG, "Exception", e);
             Bundle result = new Bundle();
             result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
             result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
diff --git a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
index 3dd9391d0..1bf3d76a3 100644
--- a/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
+++ b/OpenPGP-Keychain-API/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
@@ -42,7 +42,7 @@ public class OpenPgpConstants {
     public static final int RESULT_CODE_ERROR = 0;
     // success!
     public static final int RESULT_CODE_SUCCESS = 1;
-    // execute intent and do it again with params from intent
+    // executeServiceMethod intent and do it again with params from intent
     public static final int RESULT_CODE_USER_INTERACTION_REQUIRED = 2;
 
 }
diff --git a/OpenPGP-Keychain/src/main/AndroidManifest.xml b/OpenPGP-Keychain/src/main/AndroidManifest.xml
index 45b034b97..ba2bd5571 100644
--- a/OpenPGP-Keychain/src/main/AndroidManifest.xml
+++ b/OpenPGP-Keychain/src/main/AndroidManifest.xml
@@ -362,10 +362,9 @@
         <activity
             android:name="org.sufficientlysecure.keychain.service.remote.RemoteServiceActivity"
             android:exported="false"
-            android:label="@string/app_name"
-            android:launchMode="singleTop"
-            android:process=":remote_api"
-            android:taskAffinity=":remote_api" />
+            android:label="@string/app_name" />
+        <!--android:launchMode="singleTop"-->
+        <!--android:process=":remote_api"-->
         <activity
             android:name="org.sufficientlysecure.keychain.service.remote.RegisteredAppsListActivity"
             android:configChanges="orientation|screenSize|keyboardHidden|keyboard"
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
index 870e45ea5..1de9ab985 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java
@@ -235,7 +235,7 @@ public class KeychainIntentService extends IntentService implements ProgressDial
 
         String action = intent.getAction();
 
-        // execute action from extra bundle
+        // executeServiceMethod action from extra bundle
         if (ACTION_ENCRYPT_SIGN.equals(action)) {
             try {
                 /* Input */
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/OpenPgpService.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/OpenPgpService.java
index 006754bae..4bc5a90ac 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/OpenPgpService.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/OpenPgpService.java
@@ -50,6 +50,8 @@ import org.sufficientlysecure.keychain.service.exception.WrongPassphraseExceptio
 import org.sufficientlysecure.keychain.util.InputData;
 import org.sufficientlysecure.keychain.util.Log;
 
+import android.app.PendingIntent;
+import android.content.ComponentName;
 import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
@@ -308,8 +310,20 @@ public class OpenPgpService extends RemoteService {
             String passphrase = PassphraseCacheService.getCachedPassphrase(getContext(), appSettings.getKeyId());
             if (passphrase == null) {
                 // TODO: we need to abort and return a passphrase Intent!
+
+                Intent intent = new Intent(getBaseContext(), RemoteServiceActivity.class);
+                // TODO: setComponent really needed for security?
+//                intent.setComponent(new ComponentName(Constants.PACKAGE_NAME,
+//                        "org.sufficientlysecure.keychain.service.remote.RemoteServiceActivity"));
+//                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                intent.setAction(RemoteServiceActivity.ACTION_CACHE_PASSPHRASE);
+                intent.putExtra(RemoteServiceActivity.EXTRA_SECRET_KEY_ID, appSettings.getKeyId());
+                PendingIntent pi = PendingIntent.getActivity(getBaseContext(), 42, intent, 0);
+
+
                 Bundle result = new Bundle();
                 result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED);
+                result.putParcelable(OpenPgpConstants.RESULT_INTENT, pi);
 
                 return result;
             }
@@ -328,19 +342,19 @@ public class OpenPgpService extends RemoteService {
 
                 is.close();
                 os.close();
-            } catch (IOException e) {
-                Log.e(Constants.TAG, "Fail", e);
+//            } catch (IOException e) {
+//                Log.e(Constants.TAG, "Fail", e);
             } finally {
-                try {
+//                try {
                     is.close();
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
-                try {
+//                } catch (IOException e) {
+//                    e.printStackTrace();
+//                }
+//                try {
                     os.close();
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
+//                } catch (IOException e) {
+//                    e.printStackTrace();
+//                }
             }
 
             Bundle result = new Bundle();
@@ -516,27 +530,42 @@ public class OpenPgpService extends RemoteService {
         }
     }
 
+    /**
+     * Checks that params != null and API version fits
+     *
+     * @param params
+     * @return
+     */
+    private Bundle validateParamsAndVersion(Bundle params) {
+        if (params == null) {
+            Bundle result = new Bundle();
+            OpenPgpError error = new OpenPgpError(OpenPgpError.GENERIC_ERROR, "params Bundle required!");
+            result.putParcelable(OpenPgpConstants.RESULT_ERRORS, error);
+            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
+            return result;
+        }
+
+        if (params.getInt(OpenPgpConstants.PARAMS_API_VERSION) != OpenPgpConstants.API_VERSION) {
+            // not compatible!
+            Bundle result = new Bundle();
+            OpenPgpError error = new OpenPgpError(OpenPgpError.INCOMPATIBLE_API_VERSIONS, "Incompatible API versions!");
+            result.putParcelable(OpenPgpConstants.RESULT_ERRORS, error);
+            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
+            return result;
+        }
+
+        return null;
+    }
+
     private final IOpenPgpService.Stub mBinder = new IOpenPgpService.Stub() {
 
         @Override
         public Bundle sign(Bundle params, final ParcelFileDescriptor input, final ParcelFileDescriptor output) {
             final AppSettings appSettings = getAppSettings();
 
-            if (params == null) {
-                Bundle result = new Bundle();
-                OpenPgpError error = new OpenPgpError(OpenPgpError.GENERIC_ERROR, "params Bundle required!");
-                result.putParcelable(OpenPgpConstants.RESULT_ERRORS, error);
-                result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
-                return result;
-            }
-
-            if (params.getInt(OpenPgpConstants.PARAMS_API_VERSION) != OpenPgpConstants.API_VERSION) {
-                // not compatible!
-                Bundle result = new Bundle();
-                OpenPgpError error = new OpenPgpError(OpenPgpError.INCOMPATIBLE_API_VERSIONS, "Incompatible API versions!");
-                result.putParcelable(OpenPgpConstants.RESULT_ERRORS, error);
-                result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
-                return result;
+            Bundle errorResult = validateParamsAndVersion(params);
+            if (errorResult != null) {
+                return errorResult;
             }
 
 //            Runnable r = new Runnable() {
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/RemoteServiceActivity.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/RemoteServiceActivity.java
index 7ab39fce1..9852a2008 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/RemoteServiceActivity.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/service/remote/RemoteServiceActivity.java
@@ -86,15 +86,15 @@ public class RemoteServiceActivity extends ActionBarActivity {
     protected void onStop() {
         super.onStop();
 
-        if (!finishHandled) {
-            Message msg = Message.obtain();
-            msg.arg1 = RemoteService.RegisterActivityCallback.CANCEL;
-            try {
-                mMessenger.send(msg);
-            } catch (RemoteException e) {
-                Log.e(Constants.TAG, "CryptoServiceActivity", e);
-            }
-        }
+//        if (!finishHandled) {
+//            Message msg = Message.obtain();
+//            msg.arg1 = RemoteService.RegisterActivityCallback.CANCEL;
+//            try {
+//                mMessenger.send(msg);
+//            } catch (RemoteException e) {
+//                Log.e(Constants.TAG, "CryptoServiceActivity", e);
+//            }
+//        }
     }
 
     protected void handleActions(Intent intent, Bundle savedInstanceState) {
@@ -237,7 +237,7 @@ public class RemoteServiceActivity extends ActionBarActivity {
 
                             Message msg = Message.obtain();
                             msg.arg1 = OpenPgpService.SelectPubKeysActivityCallback.CANCEL;
-                            ;
+
                             try {
                                 mMessenger.send(msg);
                             } catch (RemoteException e) {
@@ -313,25 +313,31 @@ public class RemoteServiceActivity extends ActionBarActivity {
             @Override
             public void handleMessage(Message message) {
                 if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
-                    Message msg = Message.obtain();
-                    msg.arg1 = OpenPgpService.PassphraseActivityCallback.OKAY;
-                    try {
-                        mMessenger.send(msg);
-                    } catch (RemoteException e) {
-                        Log.e(Constants.TAG, "CryptoServiceActivity", e);
-                    }
+//                    Message msg = Message.obtain();
+//                    msg.arg1 = OpenPgpService.PassphraseActivityCallback.OKAY;
+//                    try {
+//                        mMessenger.send(msg);
+//                    } catch (RemoteException e) {
+//                        Log.e(Constants.TAG, "CryptoServiceActivity", e);
+//                    }
+
+                    RemoteServiceActivity.this.setResult(RESULT_OK);
+                    RemoteServiceActivity.this.finish();
                 } else {
-                    Message msg = Message.obtain();
-                    msg.arg1 = OpenPgpService.PassphraseActivityCallback.CANCEL;
-                    try {
-                        mMessenger.send(msg);
-                    } catch (RemoteException e) {
-                        Log.e(Constants.TAG, "CryptoServiceActivity", e);
-                    }
+//                    Message msg = Message.obtain();
+//                    msg.arg1 = OpenPgpService.PassphraseActivityCallback.CANCEL;
+//                    try {
+//                        mMessenger.send(msg);
+//                    } catch (RemoteException e) {
+//                        Log.e(Constants.TAG, "CryptoServiceActivity", e);
+//                    }
+
+                    RemoteServiceActivity.this.setResult(RESULT_CANCELED);
+                    RemoteServiceActivity.this.finish();
                 }
 
-                finishHandled = true;
-                finish();
+//                finishHandled = true;
+//                finish();
             }
         };
 
@@ -346,7 +352,7 @@ public class RemoteServiceActivity extends ActionBarActivity {
         } catch (PgpGeneralException e) {
             Log.d(Constants.TAG, "No passphrase for this secret key, encrypt directly!");
             // send message to handler to start encryption directly
-            returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
+//            returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
         }
     }
 }
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java
index 3dd077d12..b8eed83c9 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java
@@ -300,7 +300,7 @@ public class DecryptActivity extends DrawerActivity {
                 String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
                 if (sharedText != null) {
                     // handle like normal text decryption, override action and extras to later
-                    // execute ACTION_DECRYPT in main actions
+                    // executeServiceMethod ACTION_DECRYPT in main actions
                     extras.putString(EXTRA_TEXT, sharedText);
                     action = ACTION_DECRYPT;
                 }
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
index 81446db99..85bfba224 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java
@@ -173,7 +173,7 @@ public class EncryptActivity extends DrawerActivity {
                 String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
                 if (sharedText != null) {
                     // handle like normal text encryption, override action and extras to later
-                    // execute ACTION_ENCRYPT in main actions
+                    // executeServiceMethod ACTION_ENCRYPT in main actions
                     extras.putString(EXTRA_TEXT, sharedText);
                     extras.putBoolean(EXTRA_ASCII_ARMOR, true);
                     action = ACTION_ENCRYPT;
diff --git a/OpenPGP-Keychain/src/main/res/values/strings.xml b/OpenPGP-Keychain/src/main/res/values/strings.xml
index 88ad10a0a..2a0b4b6f9 100644
--- a/OpenPGP-Keychain/src/main/res/values/strings.xml
+++ b/OpenPGP-Keychain/src/main/res/values/strings.xml
@@ -383,7 +383,7 @@
     <string name="api_settings_revoke">Revoke access</string>
     <string name="api_settings_package_name">Package Name</string>
     <string name="api_settings_package_signature">SHA-256 of Package Signature</string>
-    <string name="api_register_text">The following application requests access to OpenPGP Keychain.\n\nAllow permanent access?</string>
+    <string name="api_register_text">The following application requests access to OpenPGP Keychain.\n\nAllow access (you can revoke it later)?</string>
     <string name="api_register_allow">Allow access</string>
     <string name="api_register_disallow">Disallow access</string>
     <string name="api_register_error_select_key">Please select a key!</string>
diff --git a/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl b/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
index ef390a7f6..714ca040e 100644
--- a/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
+++ b/libraries/keychain-api-library/src/main/aidl/org/openintents/openpgp/IOpenPgpService.aidl
@@ -23,145 +23,52 @@ import org.openintents.openpgp.IOpenPgpKeyIdsCallback;
 interface IOpenPgpService {
 
     /**
-     * Bundle params:
-     * api_version 1,2,3,... (current: 1)
-     * ascii_armor true/false (for output)
-     * key_ids long[] (for encrypt method)
+     * General extras
+     * --------------
+     * 
+     * params:
+     * int                      api_version         (current: 1)
+     * boolean                  ascii_armor         true/false (for output)
      *
      *
      * Bundle return:
-     * result_code RESULT_ERROR=0 (see error), RESULT_OK=1, RESULT_USER_INTERACTION_REQUIRED=2 (execute intent and do it again with params from intent)
-     * signature_result OpenPgpSignatureResult
-     * error OpenPgpError
-     * intent Intent
+     * int                      result_code         0,1, or 2 (see OpenPgpConstants)
+     * OpenPgpSignatureResult   signature_result
+     * OpenPgpError             error
+     * Intent                   intent
      *
      */
 
+    /**
+     * sign only
+     *
+     * params:
+     * String       passphrase (optional)
+     */
     Bundle sign(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
+    /**
+     * encrypt
+     *
+     * params:
+     * long[]       key_ids
+     * or
+     * String[]     user_ids (= emails of recipients) (if more than one key has this user_id, an Intent is returned)
+     */
     Bundle encrypt(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
+    /**
+     * sign and encrypt
+     *
+     * params:
+     * same as in encrypt()
+     */
     Bundle signAndEncrypt(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
 
-    Bundle decryptAndVerify(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
-
-
-/*
-    ------------------OLD--------------------------
-*/
-    /**
-     * Sign
-     * 
-     * After successful signing, callback's onSuccess will contain the resulting output.
-     *
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void sign(in OpenPgpData input, in OpenPgpData output, in IOpenPgpCallback callback);
-
-
-    /**
-     * Encrypt
-     * 
-     * After successful encryption, callback's onSuccess will contain the resulting output.
-     * 
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param keyIds
-     *            Key Ids of recipients. Can be retrieved with getKeyIds()
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void encrypt(in OpenPgpData input, in OpenPgpData output, in long[] keyIds, in IOpenPgpCallback callback);
-    
-    /**
-     * Sign then encrypt
-     * 
-     * After successful signing and encryption, callback's onSuccess will contain the resulting output.
-     *
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param keyIds
-     *            Key Ids of recipients. Can be retrieved with getKeyIds()
-     * @param callback
-     *            Callback where to return results
-     */
-    //oneway void signAndEncrypt(in OpenPgpData input, in OpenPgpData output, in long[] keyIds, in IOpenPgpCallback callback);
-    
     /**
      * Decrypts and verifies given input bytes. This methods handles encrypted-only, signed-and-encrypted,
      * and also signed-only input.
-     * 
-     * After successful decryption/verification, callback's onSuccess will contain the resulting output.
-     * The signatureResult in onSuccess is only non-null if signed-and-encrypted or signed-only inputBytes were given.
-     * 
-     * @param input
-     *            OpenPgpData object containing String, byte[], ParcelFileDescriptor, or Uri
-     * @param output
-     *            Request output format by defining OpenPgpData object
-     *            
-     *            new OpenPgpData(OpenPgpData.TYPE_STRING)
-     *                Returns as String
-     *                (OpenPGP Radix-64, 33 percent overhead compared to binary, see http://tools.ietf.org/html/rfc4880#page-53)
-     *            new OpenPgpData(OpenPgpData.TYPE_BYTE_ARRAY)
-     *                Returns as byte[]
-     *            new OpenPgpData(uri)
-     *                Writes output to given Uri
-     *            new OpenPgpData(fileDescriptor)
-     *                Writes output to given ParcelFileDescriptor
-     * @param callback
-     *            Callback where to return results
      */
-    //oneway void decryptAndVerify(in OpenPgpData input, in OpenPgpData output, in IOpenPgpCallback callback);
-    
-    /**
-     * Get available key ids based on given user ids
-     *
-     * @param ids
-     *            User Ids (emails) of recipients OR key ids
-     * @param allowUserInteraction
-     *            Enable user interaction to lookup and import unknown keys
-     * @param callback
-     *            Callback where to return results (different type than callback in other functions!)
-     */
-    //oneway void getKeyIds(in String[] ids, in boolean allowUserInteraction, in IOpenPgpKeyIdsCallback callback);
-    
+    Bundle decryptAndVerify(in Bundle params, in ParcelFileDescriptor input, in ParcelFileDescriptor output);
+
 }
\ No newline at end of file
diff --git a/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java b/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
index d490bca0c..adb187c04 100644
--- a/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
+++ b/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpApi.java
@@ -16,15 +16,14 @@
 
 package org.openintents.openpgp.util;
 
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
-import android.os.RemoteException;
 import android.util.Log;
 
 import org.openintents.openpgp.IOpenPgpService;
 import org.openintents.openpgp.OpenPgpError;
 
-import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 
@@ -32,11 +31,98 @@ public class OpenPgpApi {
 
     IOpenPgpService mService;
 
+    private static final int OPERATION_SIGN = 0;
+    private static final int OPERATION_ENCRYPT = 1;
+    private static final int OPERATION_SIGN_ENCRYPT = 2;
+    private static final int OPERATION_DECRYPT_VERIFY = 3;
+
     public OpenPgpApi(IOpenPgpService service) {
         this.mService = service;
     }
 
     public Bundle sign(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN, new Bundle(), is, os);
+    }
+
+    public Bundle sign(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN, params, is, os);
+    }
+
+    public void sign(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_SIGN, params, is, os, callback);
+    }
+
+    public Bundle encrypt(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_ENCRYPT, new Bundle(), is, os);
+    }
+
+    public Bundle encrypt(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_ENCRYPT, params, is, os);
+    }
+
+    public void encrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_ENCRYPT, params, is, os, callback);
+    }
+
+    public Bundle signAndEncrypt(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN_ENCRYPT, new Bundle(), is, os);
+    }
+
+    public Bundle signAndEncrypt(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_SIGN_ENCRYPT, params, is, os);
+    }
+
+    public void signAndEncrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_SIGN_ENCRYPT, params, is, os, callback);
+    }
+
+    public Bundle decryptAndVerify(InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_DECRYPT_VERIFY, new Bundle(), is, os);
+    }
+
+    public Bundle decryptAndVerify(Bundle params, InputStream is, final OutputStream os) {
+        return executeApi(OPERATION_DECRYPT_VERIFY, params, is, os);
+    }
+
+    public void decryptAndVerify(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
+        executeApiAsync(OPERATION_DECRYPT_VERIFY, params, is, os, callback);
+    }
+
+    public interface IOpenPgpCallback {
+        void onReturn(final Bundle result);
+    }
+
+    private class OpenPgpAsyncTask extends AsyncTask<Void, Integer, Bundle> {
+        int operationId;
+        Bundle params;
+        InputStream is;
+        OutputStream os;
+        IOpenPgpCallback callback;
+
+        private OpenPgpAsyncTask(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
+            this.operationId = operationId;
+            this.params = params;
+            this.is = is;
+            this.os = os;
+            this.callback = callback;
+        }
+
+        @Override
+        protected Bundle doInBackground(Void... unused) {
+            return executeApi(operationId, params, is, os);
+        }
+
+        protected void onPostExecute(Bundle result) {
+            callback.onReturn(result);
+        }
+
+    }
+
+    private void executeApiAsync(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
+        new OpenPgpAsyncTask(operationId, params, is, os, callback).execute((Void[]) null);
+    }
+
+    private Bundle executeApi(int operationId, Bundle params, InputStream is, OutputStream os) {
         try {
             // send the input and output pfds
             ParcelFileDescriptor input = ParcelFileDescriptorUtil.pipeFrom(is,
@@ -56,24 +142,35 @@ public class OpenPgpApi {
                         }
                     });
 
-            Bundle params = new Bundle();
             params.putInt(OpenPgpConstants.PARAMS_API_VERSION, OpenPgpConstants.API_VERSION);
 
+            // default result is error
+            Bundle result = new Bundle();
+            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
+            result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
+                    new OpenPgpError(OpenPgpError.GENERIC_ERROR, "This should never happen!"));
+
             // blocks until result is ready
-            Bundle result = mService.sign(params, input, output);
+            switch (operationId) {
+                case OPERATION_SIGN:
+                    result = mService.sign(params, input, output);
+                    break;
+                case OPERATION_ENCRYPT:
+                    result = mService.encrypt(params, input, output);
+                    break;
+                case OPERATION_SIGN_ENCRYPT:
+                    result = mService.signAndEncrypt(params, input, output);
+                    break;
+                case OPERATION_DECRYPT_VERIFY:
+                    result = mService.decryptAndVerify(params, input, output);
+                    break;
+            }
             // close() is required to halt the TransferThread
             output.close();
 
             return result;
-        } catch (RemoteException e) {
-            Log.e(OpenPgpConstants.TAG, "RemoteException", e);
-            Bundle result = new Bundle();
-            result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
-            result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
-                    new OpenPgpError(OpenPgpError.CLIENT_SIDE_ERROR, e.getMessage()));
-            return result;
-        } catch (IOException e) {
-            Log.e(OpenPgpConstants.TAG, "IOException", e);
+        } catch (Exception e) {
+            Log.e(OpenPgpConstants.TAG, "Exception", e);
             Bundle result = new Bundle();
             result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
             result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
diff --git a/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java b/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
index 3dd9391d0..1bf3d76a3 100644
--- a/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
+++ b/libraries/keychain-api-library/src/main/java/org/openintents/openpgp/util/OpenPgpConstants.java
@@ -42,7 +42,7 @@ public class OpenPgpConstants {
     public static final int RESULT_CODE_ERROR = 0;
     // success!
     public static final int RESULT_CODE_SUCCESS = 1;
-    // execute intent and do it again with params from intent
+    // executeServiceMethod intent and do it again with params from intent
     public static final int RESULT_CODE_USER_INTERACTION_REQUIRED = 2;
 
 }