From e36e8f1deaccd35e48bbb4080c744695e915dc4c Mon Sep 17 00:00:00 2001
From: Thialfihar <thialfihar@gmail.com>
Date: Tue, 11 May 2010 14:07:15 +0000
Subject: [PATCH] merged DecryptMessageActivity and DecryptFileActivity into
 one DecryptActivity as well

---
 AndroidManifest.xml                           |  14 +-
 res/layout/decrypt.xml                        | 214 +++++++
 res/layout/decrypt_file.xml                   | 149 -----
 res/layout/decrypt_message.xml                |  99 ---
 res/values/strings.xml                        |   4 +-
 .../android/apg/DecryptActivity.java          | 598 ++++++++++++++++++
 .../android/apg/DecryptFileActivity.java      | 346 ----------
 .../android/apg/DecryptMessageActivity.java   | 288 ---------
 src/org/thialfihar/android/apg/Id.java        |   1 +
 .../android/apg/MailListActivity.java         |   2 +-
 .../thialfihar/android/apg/MainActivity.java  |  10 +-
 11 files changed, 824 insertions(+), 901 deletions(-)
 create mode 100644 res/layout/decrypt.xml
 delete mode 100644 res/layout/decrypt_file.xml
 delete mode 100644 res/layout/decrypt_message.xml
 create mode 100644 src/org/thialfihar/android/apg/DecryptActivity.java
 delete mode 100644 src/org/thialfihar/android/apg/DecryptFileActivity.java
 delete mode 100644 src/org/thialfihar/android/apg/DecryptMessageActivity.java

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 99d095a37..ba1ec2b4f 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -73,8 +73,8 @@
         </activity>
 
         <activity
-            android:name=".DecryptMessageActivity"
-            android:label="@string/title_decryptMessage"
+            android:name=".DecryptActivity"
+            android:label="@string/title_decrypt"
             android:configChanges="keyboardHidden|orientation|keyboard">
 
             <intent-filter>
@@ -85,16 +85,6 @@
 
             <intent-filter>
                 <action android:name="org.thialfihar.android.apg.intent.DECRYPT" />
-            </intent-filter>
-
-        </activity>
-
-        <activity
-            android:name=".DecryptFileActivity"
-            android:label="@string/title_decryptFile"
-            android:configChanges="keyboardHidden|orientation|keyboard">
-
-            <intent-filter>
                 <action android:name="org.thialfihar.android.apg.intent.DECRYPT_FILE" />
             </intent-filter>
 
diff --git a/res/layout/decrypt.xml b/res/layout/decrypt.xml
new file mode 100644
index 000000000..5b97c35e4
--- /dev/null
+++ b/res/layout/decrypt.xml
@@ -0,0 +1,214 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+
+     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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:fillViewport="true">
+
+    <ScrollView
+        android:layout_width="fill_parent"
+        android:layout_height="0dip"
+        android:layout_weight="1"
+        android:fillViewport="true">
+
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="fill_parent"
+            android:orientation="vertical"
+            android:layout_marginLeft="5dip">
+
+            <LinearLayout
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal">
+
+                <ImageView
+                    android:id="@+id/source_previous"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/ic_previous"/>
+
+                <TextView
+                    android:id="@+id/source_label"
+                    android:layout_width="0dip"
+                    android:layout_height="fill_parent"
+                    android:layout_weight="1"
+                    android:text="@string/label_message"
+                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:gravity="center_horizontal|center_vertical"
+                    android:textColor="#ffffffff"/>
+
+                <ImageView
+                    android:id="@+id/source_next"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/ic_next"/>
+
+            </LinearLayout>
+
+            <ViewFlipper
+                android:id="@+id/source"
+                android:layout_width="fill_parent"
+                android:layout_height="0dip"
+                android:layout_weight="1">
+
+                <LinearLayout
+                    android:id="@+id/source_message"
+                    android:layout_width="fill_parent"
+                    android:layout_height="fill_parent"
+                    android:orientation="vertical">
+
+                    <EditText
+                        android:id="@+id/message"
+                        android:inputType="text|textCapSentences|textMultiLine|textLongMessage"
+                        android:layout_width="fill_parent"
+                        android:layout_height="fill_parent"
+                        android:gravity="top"/>
+
+                </LinearLayout>
+
+                <LinearLayout
+                    android:id="@+id/source_file"
+                    android:layout_width="fill_parent"
+                    android:layout_height="fill_parent"
+                    android:orientation="vertical">
+
+                    <LinearLayout
+                        android:layout_width="fill_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="horizontal">
+
+                        <EditText
+                            android:id="@+id/filename"
+                            android:layout_width="0dip"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1"/>
+
+                        <ImageButton
+                            android:id="@+id/btn_browse"
+                            android:src="@drawable/ic_launcher_folder_small"
+                            android:layout_height="wrap_content"
+                            android:layout_width="wrap_content"/>
+
+                    </LinearLayout>
+
+                    <LinearLayout
+                        android:layout_width="fill_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="horizontal">
+
+                        <TextView
+                            android:id="@+id/label_delete_after_decryption"
+                            android:text="@string/label_delete_after_decryption"
+                            android:textAppearance="?android:attr/textAppearanceMedium"
+                            android:layout_gravity="center_vertical"
+                            android:paddingRight="10dip"
+                            android:layout_height="wrap_content"
+                            android:layout_width="0dip"
+                            android:layout_weight="1"/>
+
+                        <CheckBox
+                            android:id="@+id/delete_after_decryption"
+                            android:layout_height="wrap_content"
+                            android:layout_width="wrap_content"
+                            android:layout_gravity="center_vertical"/>
+
+                    </LinearLayout>
+
+                </LinearLayout>
+
+            </ViewFlipper>
+
+        </LinearLayout>
+
+    </ScrollView>
+
+    <LinearLayout
+        android:id="@+id/layout_signature"
+        android:orientation="horizontal"
+        android:layout_height="wrap_content"
+        android:layout_width="fill_parent">
+
+        <RelativeLayout
+            android:layout_height="wrap_content"
+            android:layout_width="wrap_content">
+
+            <ImageView
+                android:id="@+id/ic_signature"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:src="@drawable/signed_large"/>
+
+            <ImageView
+                android:id="@+id/ic_signature_status"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:src="@drawable/overlay_error"/>
+
+        </RelativeLayout>
+
+        <LinearLayout
+            android:orientation="vertical"
+            android:layout_height="wrap_content"
+            android:layout_width="wrap_content"
+            android:paddingLeft="5dip">
+
+            <TextView
+                android:id="@+id/main_user_id"
+                android:text="Main User Id"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="left"/>
+
+            <TextView
+                android:id="@+id/main_user_id_rest"
+                android:text="Main User Id Rest"
+                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="left"/>
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        style="@android:style/ButtonBar">
+
+        <Button
+            android:id="@+id/btn_reply"
+            android:text="@string/btn_reply"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"/>
+
+        <Button
+            android:id="@+id/btn_decrypt"
+            android:text="@string/btn_decrypt"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"/>
+
+    </LinearLayout>
+
+</LinearLayout>
diff --git a/res/layout/decrypt_file.xml b/res/layout/decrypt_file.xml
deleted file mode 100644
index bfe662c30..000000000
--- a/res/layout/decrypt_file.xml
+++ /dev/null
@@ -1,149 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
-
-     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.
--->
-
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="fill_parent"
-    android:layout_height="fill_parent"
-    android:orientation="vertical"
-    android:paddingTop="5dip">
-
-    <LinearLayout
-        android:layout_width="fill_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-        <TextView
-            android:id="@+id/label_filename"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            android:layout_width="50dip"
-            android:layout_height="wrap_content"
-            android:text="@string/label_file"/>
-
-        <EditText
-            android:id="@+id/filename"
-            android:layout_width="0dip"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"/>
-
-        <ImageButton
-            android:id="@+id/btn_browse"
-            android:src="@drawable/ic_launcher_folder_small"
-            android:layout_height="wrap_content"
-            android:layout_width="wrap_content"/>
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:layout_width="fill_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-        <TextView
-            android:id="@+id/label_delete_after_decryption"
-            android:text="@string/label_delete_after_decryption"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            android:layout_gravity="center_vertical"
-            android:paddingRight="10dip"
-            android:layout_height="wrap_content"
-            android:layout_width="0dip"
-            android:layout_weight="1"/>
-
-        <CheckBox
-            android:id="@+id/delete_after_decryption"
-            android:layout_height="wrap_content"
-            android:layout_width="wrap_content"
-            android:layout_gravity="center_vertical"/>
-
-    </LinearLayout>
-
-    <View
-        android:layout_width="fill_parent"
-        android:layout_height="1dip"
-        android:background="?android:attr/listDivider"
-        android:layout_marginBottom="5dip"/>
-
-    <LinearLayout
-        android:id="@+id/layout_signature"
-        android:orientation="horizontal"
-        android:layout_height="wrap_content"
-        android:layout_width="wrap_content">
-
-        <RelativeLayout
-            android:layout_height="wrap_content"
-            android:layout_width="wrap_content">
-
-            <ImageView
-                android:id="@+id/ic_signature"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:src="@drawable/signed_large"/>
-
-            <ImageView
-                android:id="@+id/ic_signature_status"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:src="@drawable/overlay_error"/>
-
-        </RelativeLayout>
-
-        <LinearLayout
-            android:orientation="vertical"
-            android:layout_height="wrap_content"
-            android:layout_width="wrap_content"
-            android:paddingLeft="5dip">
-
-            <TextView
-                android:id="@+id/main_user_id"
-                android:text="Main User Id"
-                android:textAppearance="?android:attr/textAppearanceMedium"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="left"/>
-
-            <TextView
-                android:id="@+id/main_user_id_rest"
-                android:text="Main User Id Rest"
-                android:textAppearance="?android:attr/textAppearanceSmall"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="left"/>
-
-        </LinearLayout>
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:layout_width="fill_parent"
-        android:layout_height="0dip"
-        android:layout_weight="1"/>
-
-    <LinearLayout
-        android:orientation="horizontal"
-        android:layout_width="fill_parent"
-        android:layout_height="wrap_content"
-        style="@android:style/ButtonBar">
-
-        <Button
-            android:id="@+id/btn_decrypt"
-            android:text="@string/btn_decrypt"
-            android:layout_weight="1"
-            android:layout_width="0dip"
-            android:layout_height="wrap_content"/>
-
-    </LinearLayout>
-
-</LinearLayout>
diff --git a/res/layout/decrypt_message.xml b/res/layout/decrypt_message.xml
deleted file mode 100644
index de5b5e7fa..000000000
--- a/res/layout/decrypt_message.xml
+++ /dev/null
@@ -1,99 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
-
-     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.
--->
-
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:layout_width="fill_parent"
-    android:layout_height="fill_parent"
-    android:fillViewport="true">
-
-    <EditText
-        android:id="@+id/message"
-        android:inputType="text|textCapSentences|textMultiLine|textLongMessage"
-        android:layout_width="fill_parent"
-        android:layout_height="0dip"
-        android:layout_weight="1"
-        android:gravity="top"/>
-
-    <LinearLayout
-        android:orientation="horizontal"
-        android:layout_height="wrap_content"
-        android:layout_width="fill_parent"
-        android:paddingLeft="5dip"
-        android:paddingRight="5dip">
-
-        <LinearLayout
-            android:id="@+id/layout_signature"
-            android:orientation="horizontal"
-            android:layout_height="wrap_content"
-            android:layout_width="wrap_content"
-            android:layout_weight="2">
-
-            <RelativeLayout
-                android:layout_height="wrap_content"
-                android:layout_width="wrap_content">
-
-                <ImageView
-                    android:id="@+id/ic_signature"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:src="@drawable/signed_large"/>
-
-                <ImageView
-                    android:id="@+id/ic_signature_status"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:src="@drawable/overlay_error"/>
-
-            </RelativeLayout>
-
-            <LinearLayout
-                android:orientation="vertical"
-                android:layout_height="wrap_content"
-                android:layout_width="wrap_content"
-                android:paddingLeft="5dip">
-
-                <TextView
-                    android:id="@+id/main_user_id"
-                    android:text="Main User Id"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="left"/>
-
-                <TextView
-                    android:id="@+id/main_user_id_rest"
-                    android:text="Main User Id Rest"
-                    android:textAppearance="?android:attr/textAppearanceSmall"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="left"/>
-
-            </LinearLayout>
-
-        </LinearLayout>
-
-        <Button
-            android:id="@+id/btn_decrypt"
-            android:text="@string/btn_decrypt"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"/>
-
-    </LinearLayout>
-
-</LinearLayout>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 2da6b8c3b..0e8f2b136 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -22,9 +22,7 @@
     <string name="title_selectRecipients">Select Recipients</string>
     <string name="title_selectSignature">Select Signature</string>
     <string name="title_encrypt">Encrypt</string>
-    <string name="title_decryptMessage">Decrypt Message</string>
-    <string name="title_encryptFile">Encrypt File</string>
-    <string name="title_decryptFile">Decrypt File</string>
+    <string name="title_decrypt">Decrypt</string>
     <string name="title_authentification">Authentification</string>
     <string name="title_createKey">Create Key</string>
     <string name="title_editKey">Edit Key</string>
diff --git a/src/org/thialfihar/android/apg/DecryptActivity.java b/src/org/thialfihar/android/apg/DecryptActivity.java
new file mode 100644
index 000000000..1d3510c5a
--- /dev/null
+++ b/src/org/thialfihar/android/apg/DecryptActivity.java
@@ -0,0 +1,598 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.thialfihar.android.apg;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.Security;
+import java.security.SignatureException;
+import java.util.regex.Matcher;
+
+import org.bouncycastle2.jce.provider.BouncyCastleProvider;
+import org.bouncycastle2.openpgp.PGPException;
+import org.bouncycastle2.util.Strings;
+import org.openintents.intents.FileManager;
+
+import android.app.Dialog;
+import android.content.ActivityNotFoundException;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Message;
+import android.text.ClipboardManager;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.animation.AnimationUtils;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.widget.ViewFlipper;
+
+public class DecryptActivity extends BaseActivity {
+    private long mSignatureKeyId = 0;
+
+    private String mReplyTo = null;
+    private String mSubject = null;
+    private boolean mSignedOnly = false;
+    private boolean mAssumeSymmetricEncryption = false;
+
+    private EditText mMessage = null;
+    private LinearLayout mSignatureLayout = null;
+    private ImageView mSignatureStatusImage = null;
+    private TextView mUserId = null;
+    private TextView mUserIdRest = null;
+
+    private ViewFlipper mSource = null;
+    private TextView mSourceLabel = null;
+    private ImageView mSourcePrevious = null;
+    private ImageView mSourceNext = null;
+
+    private Button mDecryptButton = null;
+    private Button mReplyButton = null;
+
+    private int mDecryptTarget;
+
+    private EditText mFilename = null;
+    private CheckBox mDeleteAfter = null;
+    private ImageButton mBrowse = null;
+
+    private String mInputFilename = null;
+    private String mOutputFilename = null;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.decrypt);
+
+        mSource = (ViewFlipper) findViewById(R.id.source);
+        mSourceLabel = (TextView) findViewById(R.id.source_label);
+        mSourcePrevious = (ImageView) findViewById(R.id.source_previous);
+        mSourceNext = (ImageView) findViewById(R.id.source_next);
+
+        mSourcePrevious.setClickable(true);
+        mSourcePrevious.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mSource.setInAnimation(AnimationUtils.loadAnimation(DecryptActivity.this,
+                                                                    R.anim.push_right_in));
+                mSource.setOutAnimation(AnimationUtils.loadAnimation(DecryptActivity.this,
+                                                                     R.anim.push_right_out));
+                mSource.showPrevious();
+                updateSource();
+            }
+        });
+
+        mSourceNext.setClickable(true);
+        OnClickListener nextSourceClickListener = new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mSource.setInAnimation(AnimationUtils.loadAnimation(DecryptActivity.this,
+                                                                    R.anim.push_left_in));
+                mSource.setOutAnimation(AnimationUtils.loadAnimation(DecryptActivity.this,
+                                                                     R.anim.push_left_out));
+                mSource.showNext();
+                updateSource();
+            }
+        };
+        mSourceNext.setOnClickListener(nextSourceClickListener);
+
+        mSourceLabel.setClickable(true);
+        mSourceLabel.setOnClickListener(nextSourceClickListener);
+
+        mMessage = (EditText) findViewById(R.id.message);
+        mDecryptButton = (Button) findViewById(R.id.btn_decrypt);
+        mReplyButton = (Button) findViewById(R.id.btn_reply);
+        mSignatureLayout = (LinearLayout) findViewById(R.id.layout_signature);
+        mSignatureStatusImage = (ImageView) findViewById(R.id.ic_signature_status);
+        mUserId = (TextView) findViewById(R.id.main_user_id);
+        mUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
+
+        // measure the height of the source_file view and set the message view's min height to that,
+        // so it fills mSource fully... bit of a hack.
+        View tmp = findViewById(R.id.source_file);
+        tmp.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
+        int height = tmp.getMeasuredHeight();
+        mMessage.setMinimumHeight(height);
+
+        mFilename = (EditText) findViewById(R.id.filename);
+        mBrowse = (ImageButton) findViewById(R.id.btn_browse);
+        mBrowse.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                openFile();
+            }
+        });
+
+        mDeleteAfter = (CheckBox) findViewById(R.id.delete_after_decryption);
+
+        Intent intent = getIntent();
+        if (intent.getAction() != null && intent.getAction().equals(Intent.ACTION_VIEW)) {
+            Uri uri = intent.getData();
+            try {
+                InputStream attachment = getContentResolver().openInputStream(uri);
+                ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
+                byte bytes[] = new byte[1 << 16];
+                int length;
+                while ((length = attachment.read(bytes)) > 0) {
+                    byteOut.write(bytes, 0, length);
+                }
+                byteOut.close();
+                String data = Strings.fromUTF8ByteArray(byteOut.toByteArray());
+                mMessage.setText(data);
+            } catch (FileNotFoundException e) {
+                // ignore, then
+            } catch (IOException e) {
+                // ignore, then
+            }
+        } else if (intent.getAction() != null && intent.getAction().equals(Apg.Intent.DECRYPT)) {
+            Bundle extras = intent.getExtras();
+            if (extras == null) {
+                extras = new Bundle();
+            }
+            String data = extras.getString("data");
+            if (data != null) {
+                Matcher matcher = Apg.PGP_MESSAGE.matcher(data);
+                if (matcher.matches()) {
+                    data = matcher.group(1);
+                    // replace non breakable spaces
+                    data = data.replaceAll("\\xa0", " ");
+                    mMessage.setText(data);
+                } else {
+                    matcher = Apg.PGP_SIGNED_MESSAGE.matcher(data);
+                    if (matcher.matches()) {
+                        data = matcher.group(1);
+                        // replace non breakable spaces
+                        data = data.replaceAll("\\xa0", " ");
+                        mMessage.setText(data);
+                        mDecryptButton.setText(R.string.btn_verify);
+                    }
+                }
+            }
+            mReplyTo = extras.getString("replyTo");
+            mSubject = extras.getString("subject");
+        }
+
+        if (mMessage.getText().length() == 0) {
+            ClipboardManager clip = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
+            String data = "";
+            Matcher matcher = Apg.PGP_MESSAGE.matcher(clip.getText());
+            if (matcher.matches()) {
+                data = matcher.group(1);
+                mMessage.setText(data);
+                Toast.makeText(this, R.string.using_clipboard_content, Toast.LENGTH_SHORT).show();
+            }
+        }
+
+        mSignatureLayout.setVisibility(View.GONE);
+
+        mDecryptButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptClicked();
+            }
+        });
+
+        mReplyButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                replyClicked();
+            }
+        });
+        mReplyButton.setVisibility(View.INVISIBLE);
+
+        if (mMessage.getText().length() > 0) {
+            mDecryptButton.performClick();
+        }
+
+        updateSource();
+    }
+
+    private void openFile() {
+        String filename = mFilename.getText().toString();
+
+        Intent intent = new Intent(FileManager.ACTION_PICK_FILE);
+
+        intent.setData(Uri.parse("file://" + filename));
+
+        intent.putExtra(FileManager.EXTRA_TITLE, "Select file to decrypt...");
+        intent.putExtra(FileManager.EXTRA_BUTTON_TEXT, "Open");
+
+        try {
+            startActivityForResult(intent, Id.request.filename);
+        } catch (ActivityNotFoundException e) {
+            // No compatible file manager was found.
+            Toast.makeText(this, R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void guessOutputFilename() {
+        mInputFilename = mFilename.getText().toString();
+        File file = new File(mInputFilename);
+        String filename = file.getName();
+        if (filename.endsWith(".asc") || filename.endsWith(".gpg")) {
+            filename = filename.substring(0, filename.length() - 4);
+        }
+        mOutputFilename = Constants.path.app_dir + "/" + filename;
+    }
+
+    private void updateSource() {
+        switch (mSource.getCurrentView().getId()) {
+            case R.id.source_file: {
+                mSourceLabel.setText(R.string.label_file);
+                mDecryptButton.setText(R.string.btn_decrypt);
+                break;
+            }
+
+            case R.id.source_message: {
+                mSourceLabel.setText(R.string.label_message);
+                mDecryptButton.setText(R.string.btn_decrypt);
+                break;
+            }
+
+            default: {
+                break;
+            }
+        }
+    }
+
+    private void decryptClicked() {
+        if (mSource.getCurrentView().getId() == R.id.source_file) {
+            mDecryptTarget = Id.target.file;
+        } else {
+            mDecryptTarget = Id.target.message;
+        }
+        initiateDecryption();
+    }
+
+    private void initiateDecryption() {
+        if (mDecryptTarget == Id.target.file) {
+            String currentFilename = mFilename.getText().toString();
+            if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
+                guessOutputFilename();
+            }
+
+            if (mInputFilename.equals("")) {
+                Toast.makeText(this, "Select a file first.", Toast.LENGTH_SHORT).show();
+                return;
+            }
+
+            File file = new File(mInputFilename);
+            if (!file.exists() || !file.isFile()) {
+                Toast.makeText(this, "Error: file not found", Toast.LENGTH_SHORT).show();
+                return;
+            }
+        }
+
+        if (mDecryptTarget == Id.target.message) {
+            String messageData = mMessage.getText().toString();
+            Matcher matcher = Apg.PGP_SIGNED_MESSAGE.matcher(messageData);
+            if (matcher.matches()) {
+                mSignedOnly = true;
+                decryptStart();
+                return;
+            }
+        }
+
+        // else treat it as an decrypted message/file
+        mSignedOnly = false;
+        String error = null;
+        try {
+            InputStream in;
+            if (mDecryptTarget == Id.target.file) {
+                in = new FileInputStream(mInputFilename);
+            } else {
+                in = new ByteArrayInputStream(mMessage.getText().toString().getBytes());
+            }
+            try {
+                setSecretKeyId(Apg.getDecryptionKeyId(in));
+                if (getSecretKeyId() == 0) {
+                    throw new Apg.GeneralException("no suitable secret key found");
+                }
+                mAssumeSymmetricEncryption = false;
+            } catch (Apg.NoAsymmetricEncryptionException e) {
+                setSecretKeyId(0);
+                // reopen the file/message to check whether there's
+                // symmetric encryption data in there
+                if (mDecryptTarget == Id.target.file) {
+                    in = new FileInputStream(mInputFilename);
+                } else {
+                    in = new ByteArrayInputStream(mMessage.getText().toString().getBytes());
+                }
+                if (!Apg.hasSymmetricEncryption(in)) {
+                    throw new Apg.GeneralException("no known kind of encryption found");
+                }
+                mAssumeSymmetricEncryption = true;
+           }
+
+           showDialog(Id.dialog.pass_phrase);
+        } catch (FileNotFoundException e) {
+            error = "file not found: " + e.getLocalizedMessage();
+        } catch (IOException e) {
+            error = e.getLocalizedMessage();
+        } catch (Apg.GeneralException e) {
+            error = e.getLocalizedMessage();
+        }
+        if (error != null) {
+            Toast.makeText(this, "Error: " + error, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void replyClicked() {
+        Intent intent = new Intent(this, EncryptActivity.class);
+        intent.setAction(Apg.Intent.ENCRYPT);
+        String data = mMessage.getText().toString();
+        data = data.replaceAll("(?m)^", "> ");
+        data = "\n\n" + data;
+        intent.putExtra("data", data);
+        intent.putExtra("subject", "Re: " + mSubject);
+        intent.putExtra("sendTo", mReplyTo);
+        intent.putExtra("eyId", mSignatureKeyId);
+        intent.putExtra("signatureKeyId", getSecretKeyId());
+        intent.putExtra("encryptionKeyIds", new long[] { mSignatureKeyId });
+        startActivity(intent);
+    }
+
+    private void askForOutputFilename() {
+        showDialog(Id.dialog.output_filename);
+    }
+
+    @Override
+    public void passPhraseCallback(String passPhrase) {
+        super.passPhraseCallback(passPhrase);
+        if (mDecryptTarget == Id.target.file) {
+            askForOutputFilename();
+        } else {
+            decryptStart();
+        }
+    }
+
+    private void decryptStart() {
+        showDialog(Id.dialog.decrypting);
+        startThread();
+    }
+
+    @Override
+    public void run() {
+        String error = null;
+        Security.addProvider(new BouncyCastleProvider());
+
+        Bundle data = new Bundle();
+        Message msg = new Message();
+
+        try {
+            InputStream in = null;
+            OutputStream out = null;
+            if (mDecryptTarget == Id.target.message) {
+                String messageData = mMessage.getText().toString();
+                in = new ByteArrayInputStream(messageData.getBytes());
+                out = new ByteArrayOutputStream();
+            } else {
+                in = new FileInputStream(mInputFilename);
+                out = new FileOutputStream(mOutputFilename);
+            }
+
+            if (mSignedOnly) {
+                data = Apg.verifyText(in, out, this);
+            } else {
+                data = Apg.decrypt(in, out, Apg.getPassPhrase(), this, mAssumeSymmetricEncryption);
+            }
+
+            out.close();
+            if (mDecryptTarget == Id.target.message) {
+                data.putString("decryptedMessage",
+                               Strings.fromUTF8ByteArray(((ByteArrayOutputStream)
+                                                              out).toByteArray()));
+            }
+        } catch (PGPException e) {
+            error = e.getMessage();
+        } catch (IOException e) {
+            error = e.getMessage();
+        } catch (SignatureException e) {
+            error = e.getMessage();
+            e.printStackTrace();
+        } catch (Apg.GeneralException e) {
+            error = e.getMessage();
+        }
+
+        data.putInt("type", Id.message.done);
+
+        if (error != null) {
+            data.putString("error", error);
+        }
+
+        msg.setData(data);
+        sendMessage(msg);
+    }
+
+    @Override
+    public void doneCallback(Message msg) {
+        super.doneCallback(msg);
+
+        Bundle data = msg.getData();
+        removeDialog(Id.dialog.decrypting);
+        mSignatureKeyId = 0;
+        mSignatureLayout.setVisibility(View.GONE);
+        mReplyButton.setVisibility(View.INVISIBLE);
+
+        String error = data.getString("error");
+        if (error != null) {
+            Toast.makeText(DecryptActivity.this,
+                           "Error: " + data.getString("error"),
+                           Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        Toast.makeText(this, "Successfully decrypted.", Toast.LENGTH_SHORT).show();
+        switch (mDecryptTarget) {
+            case Id.target.message: {
+                String decryptedMessage = data.getString("decryptedMessage");
+                mMessage.setText(decryptedMessage);
+                mReplyButton.setVisibility(View.VISIBLE);
+                break;
+            }
+
+            case Id.target.file: {
+                if (mDeleteAfter.isChecked()) {
+                    setDeleteFile(mInputFilename);
+                    showDialog(Id.dialog.delete_file);
+                }
+                break;
+            }
+
+            default: {
+                // shouldn't happen
+                break;
+            }
+        }
+
+        if (data.getBoolean("signature")) {
+            String userId = data.getString("signatureUserId");
+            mSignatureKeyId = data.getLong("signatureKeyId");
+            mUserIdRest.setText("id: " + Long.toHexString(mSignatureKeyId & 0xffffffffL));
+            if (userId == null) {
+                userId = getResources().getString(R.string.unknown_user_id);
+            }
+            String chunks[] = userId.split(" <", 2);
+            userId = chunks[0];
+            if (chunks.length > 1) {
+                mUserIdRest.setText("<" + chunks[1]);
+            }
+            mUserId.setText(userId);
+
+            if (data.getBoolean("signatureSuccess")) {
+                mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
+            } else if (data.getBoolean("signatureUnknown")) {
+                mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+            } else {
+                mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+            }
+            mSignatureLayout.setVisibility(View.VISIBLE);
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case Id.request.filename: {
+                if (resultCode == RESULT_OK && data != null) {
+                    String filename = data.getDataString();
+                    if (filename != null) {
+                        // Get rid of URI prefix:
+                        if (filename.startsWith("file://")) {
+                            filename = filename.substring(7);
+                        }
+                        // replace %20 and so on
+                        filename = Uri.decode(filename);
+
+                        mFilename.setText(filename);
+                    }
+                }
+                return;
+            }
+
+            case Id.request.output_filename: {
+                if (resultCode == RESULT_OK && data != null) {
+                    String filename = data.getDataString();
+                    if (filename != null) {
+                        // Get rid of URI prefix:
+                        if (filename.startsWith("file://")) {
+                            filename = filename.substring(7);
+                        }
+                        // replace %20 and so on
+                        filename = Uri.decode(filename);
+
+                        FileDialog.setFilename(filename);
+                    }
+                }
+                return;
+            }
+
+            default: {
+                break;
+            }
+        }
+
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+
+    @Override
+    protected Dialog onCreateDialog(int id) {
+        switch (id) {
+            case Id.dialog.output_filename: {
+                return FileDialog.build(this, "Decrypt to file",
+                                        "Please specify which file to decrypt to.\n" +
+                                        "WARNING! File will be overwritten if it exists.",
+                                        mOutputFilename,
+                                        new FileDialog.OnClickListener() {
+
+                                            @Override
+                                            public void onOkClick(String filename) {
+                                                removeDialog(Id.dialog.output_filename);
+                                                mOutputFilename = filename;
+                                                decryptStart();
+                                            }
+
+                                            @Override
+                                            public void onCancelClick() {
+                                                removeDialog(Id.dialog.output_filename);
+                                            }
+                                        },
+                                        getString(R.string.filemanager_title_save),
+                                        getString(R.string.filemanager_btn_save),
+                                        Id.request.output_filename);
+            }
+
+            default: {
+                break;
+            }
+        }
+
+        return super.onCreateDialog(id);
+    }
+}
diff --git a/src/org/thialfihar/android/apg/DecryptFileActivity.java b/src/org/thialfihar/android/apg/DecryptFileActivity.java
deleted file mode 100644
index f8eeed57a..000000000
--- a/src/org/thialfihar/android/apg/DecryptFileActivity.java
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.thialfihar.android.apg;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.Security;
-import java.security.SignatureException;
-
-import org.bouncycastle2.jce.provider.BouncyCastleProvider;
-import org.bouncycastle2.openpgp.PGPException;
-import org.openintents.intents.FileManager;
-
-import android.app.Dialog;
-import android.content.ActivityNotFoundException;
-import android.content.Intent;
-import android.net.Uri;
-import android.os.Bundle;
-import android.os.Message;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.widget.Button;
-import android.widget.CheckBox;
-import android.widget.EditText;
-import android.widget.ImageButton;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
-import android.widget.TextView;
-import android.widget.Toast;
-
-public class DecryptFileActivity extends BaseActivity {
-    private EditText mFilename = null;
-    private CheckBox mDeleteAfter = null;
-    private ImageButton mBrowse = null;
-    private Button mDecryptButton = null;
-    private LinearLayout mSignatureLayout = null;
-    private ImageView mSignatureStatusImage = null;
-    private TextView mUserId = null;
-    private TextView mUserIdRest = null;
-
-    private String mInputFilename = null;
-    private String mOutputFilename = null;
-
-    private boolean mAssumeSymmetricEncryption = false;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.decrypt_file);
-
-        mFilename = (EditText) findViewById(R.id.filename);
-        mBrowse = (ImageButton) findViewById(R.id.btn_browse);
-        mBrowse.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                openFile();
-            }
-        });
-
-        mDeleteAfter = (CheckBox) findViewById(R.id.delete_after_decryption);
-
-        mDecryptButton = (Button) findViewById(R.id.btn_decrypt);
-        mDecryptButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                decryptClicked();
-            }
-        });
-
-        mSignatureLayout = (LinearLayout) findViewById(R.id.layout_signature);
-        mSignatureStatusImage = (ImageView) findViewById(R.id.ic_signature_status);
-        mUserId = (TextView) findViewById(R.id.main_user_id);
-        mUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
-
-        mSignatureLayout.setVisibility(View.INVISIBLE);
-    }
-
-    private void openFile() {
-        String filename = mFilename.getText().toString();
-
-        Intent intent = new Intent(FileManager.ACTION_PICK_FILE);
-
-        intent.setData(Uri.parse("file://" + filename));
-
-        intent.putExtra(FileManager.EXTRA_TITLE, "Select file to decrypt...");
-        intent.putExtra(FileManager.EXTRA_BUTTON_TEXT, "Open");
-
-        try {
-            startActivityForResult(intent, Id.request.filename);
-        } catch (ActivityNotFoundException e) {
-            // No compatible file manager was found.
-            Toast.makeText(this, R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show();
-        }
-    }
-
-    private void decryptClicked() {
-        String error = null;
-        String currentFilename = mFilename.getText().toString();
-        if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
-            mInputFilename = mFilename.getText().toString();
-            File file = new File(mInputFilename);
-            String filename = file.getName();
-            if (filename.endsWith(".asc") || filename.endsWith(".gpg")) {
-                filename = filename.substring(0, filename.length() - 4);
-            }
-            mOutputFilename = Constants.path.app_dir + "/" + filename;
-        }
-
-        if (mInputFilename.equals("")) {
-            Toast.makeText(this, "Select a file first.", Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        File file = new File(mInputFilename);
-        if (!file.exists() || !file.isFile()) {
-            Toast.makeText(this, "Error: file not found", Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        try {
-            InputStream in = new FileInputStream(mInputFilename);
-            try {
-                setSecretKeyId(Apg.getDecryptionKeyId(in));
-                if (getSecretKeyId() == 0) {
-                    throw new Apg.GeneralException("no suitable secret key found");
-                }
-                mAssumeSymmetricEncryption = false;
-            } catch (Apg.NoAsymmetricEncryptionException e) {
-                setSecretKeyId(0);
-                // reopen the file to check whether there's symmetric encryption data in there
-                in = new FileInputStream(mInputFilename);
-                if (!Apg.hasSymmetricEncryption(in)) {
-                    throw new Apg.GeneralException("no known kind of encryption found");
-                }
-                mAssumeSymmetricEncryption = true;
-           }
-
-           showDialog(Id.dialog.pass_phrase);
-        } catch (FileNotFoundException e) {
-            error = "file not found: " + e.getLocalizedMessage();
-        } catch (IOException e) {
-            error = e.getLocalizedMessage();
-        } catch (Apg.GeneralException e) {
-            error = e.getLocalizedMessage();
-        }
-        if (error != null) {
-            Toast.makeText(this, "Error: " + error, Toast.LENGTH_SHORT).show();
-        }
-    }
-
-    @Override
-    public void passPhraseCallback(String passPhrase) {
-        super.passPhraseCallback(passPhrase);
-        askForOutputFilename();
-    }
-
-    private void askForOutputFilename() {
-        showDialog(Id.dialog.output_filename);
-    }
-
-    private void decryptStart() {
-        showDialog(Id.dialog.decrypting);
-        startThread();
-    }
-
-    @Override
-    public void run() {
-        String error = null;
-        Security.addProvider(new BouncyCastleProvider());
-
-        Bundle data = new Bundle();
-        Message msg = new Message();
-
-        try {
-            InputStream in = new FileInputStream(mInputFilename);
-            OutputStream out = new FileOutputStream(mOutputFilename);
-
-            data = Apg.decrypt(in, out, Apg.getPassPhrase(), this, mAssumeSymmetricEncryption);
-
-            out.close();
-        } catch (PGPException e) {
-            error = e.getMessage();
-        } catch (IOException e) {
-            error = e.getMessage();
-        } catch (SignatureException e) {
-            error = e.getMessage();
-            e.printStackTrace();
-        } catch (Apg.GeneralException e) {
-            error = e.getMessage();
-        }
-
-        data.putInt("type", Id.message.done);
-
-        if (error != null) {
-            data.putString("error", error);
-        }
-
-        msg.setData(data);
-        sendMessage(msg);
-    }
-
-    @Override
-    protected Dialog onCreateDialog(int id) {
-        switch (id) {
-            case Id.dialog.output_filename: {
-                return FileDialog.build(this, "Decrypt to file",
-                                        "Please specify which file to decrypt to.\n" +
-                                        "WARNING! File will be overwritten if it exists.",
-                                        mOutputFilename,
-                                        new FileDialog.OnClickListener() {
-
-                                            @Override
-                                            public void onOkClick(String filename) {
-                                                removeDialog(Id.dialog.output_filename);
-                                                mOutputFilename = filename;
-                                                decryptStart();
-                                            }
-
-                                            @Override
-                                            public void onCancelClick() {
-                                                removeDialog(Id.dialog.output_filename);
-                                            }
-                                        },
-                                        getString(R.string.filemanager_title_save),
-                                        getString(R.string.filemanager_btn_save),
-                                        Id.request.output_filename);
-            }
-
-            default: {
-                break;
-            }
-        }
-
-        return super.onCreateDialog(id);
-    }
-
-    @Override
-    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
-        switch (requestCode) {
-            case Id.request.filename: {
-                if (resultCode == RESULT_OK && data != null) {
-                    String filename = data.getDataString();
-                    if (filename != null) {
-                        // Get rid of URI prefix:
-                        if (filename.startsWith("file://")) {
-                            filename = filename.substring(7);
-                        }
-                        // replace %20 and so on
-                        filename = Uri.decode(filename);
-
-                        mFilename.setText(filename);
-                    }
-                }
-                return;
-            }
-
-            case Id.request.output_filename: {
-                if (resultCode == RESULT_OK && data != null) {
-                    String filename = data.getDataString();
-                    if (filename != null) {
-                        // Get rid of URI prefix:
-                        if (filename.startsWith("file://")) {
-                            filename = filename.substring(7);
-                        }
-                        // replace %20 and so on
-                        filename = Uri.decode(filename);
-
-                        FileDialog.setFilename(filename);
-                    }
-                }
-                return;
-            }
-
-            default: {
-                break;
-            }
-        }
-        super.onActivityResult(requestCode, resultCode, data);
-    }
-
-    @Override
-    public void doneCallback(Message msg) {
-        super.doneCallback(msg);
-        Bundle data = msg.getData();
-        removeDialog(Id.dialog.decrypting);
-
-        String error = data.getString("error");
-        if (error != null) {
-            Toast.makeText(DecryptFileActivity.this,
-                           "Error: " + data.getString("error"),
-                           Toast.LENGTH_SHORT).show();
-        } else {
-            Toast.makeText(DecryptFileActivity.this,
-                           "Successfully decrypted.",
-                           Toast.LENGTH_SHORT).show();
-            if (mDeleteAfter.isChecked()) {
-                setDeleteFile(mInputFilename);
-                showDialog(Id.dialog.delete_file);
-            }
-        }
-
-        mSignatureLayout.setVisibility(View.INVISIBLE);
-        if (data.getBoolean("signature")) {
-            String userId = data.getString("signatureUserId");
-            long signatureKeyId = data.getLong("signatureKeyId");
-            mUserIdRest.setText("id: " + Long.toHexString(signatureKeyId & 0xffffffffL));
-            if (userId == null) {
-                userId = getResources().getString(R.string.unknown_user_id);
-            }
-            String chunks[] = userId.split(" <", 2);
-            userId = chunks[0];
-            if (chunks.length > 1) {
-                mUserIdRest.setText("<" + chunks[1]);
-            }
-            mUserId.setText(userId);
-
-            if (data.getBoolean("signatureSuccess")) {
-                mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
-            } else if (data.getBoolean("signatureUnknown")) {
-                mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
-            } else {
-                mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
-            }
-            mSignatureLayout.setVisibility(View.VISIBLE);
-        }
-    }
-}
diff --git a/src/org/thialfihar/android/apg/DecryptMessageActivity.java b/src/org/thialfihar/android/apg/DecryptMessageActivity.java
deleted file mode 100644
index b2eaf589d..000000000
--- a/src/org/thialfihar/android/apg/DecryptMessageActivity.java
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.thialfihar.android.apg;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.security.Security;
-import java.security.SignatureException;
-import java.util.regex.Matcher;
-
-import org.bouncycastle2.jce.provider.BouncyCastleProvider;
-import org.bouncycastle2.openpgp.PGPException;
-import org.bouncycastle2.util.Strings;
-
-import android.content.Intent;
-import android.net.Uri;
-import android.os.Bundle;
-import android.os.Message;
-import android.text.ClipboardManager;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.widget.Button;
-import android.widget.EditText;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
-import android.widget.TextView;
-import android.widget.Toast;
-
-public class DecryptMessageActivity extends BaseActivity {
-    private long mSignatureKeyId = 0;
-
-    private String mReplyTo = null;
-    private String mSubject = null;
-    private boolean mSignedOnly = false;
-
-    private EditText mMessage = null;
-    private LinearLayout mSignatureLayout = null;
-    private ImageView mSignatureStatusImage = null;
-    private TextView mUserId = null;
-    private TextView mUserIdRest = null;
-    private Button mDecryptButton = null;
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.decrypt_message);
-
-        mMessage = (EditText) findViewById(R.id.message);
-        mDecryptButton = (Button) findViewById(R.id.btn_decrypt);
-        mSignatureLayout = (LinearLayout) findViewById(R.id.layout_signature);
-        mSignatureStatusImage = (ImageView) findViewById(R.id.ic_signature_status);
-        mUserId = (TextView) findViewById(R.id.main_user_id);
-        mUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
-
-        Intent intent = getIntent();
-        if (intent.getAction() != null && intent.getAction().equals(Intent.ACTION_VIEW)) {
-            Uri uri = intent.getData();
-            try {
-                InputStream attachment = getContentResolver().openInputStream(uri);
-                ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
-                byte bytes[] = new byte[1 << 16];
-                int length;
-                while ((length = attachment.read(bytes)) > 0) {
-                    byteOut.write(bytes, 0, length);
-                }
-                byteOut.close();
-                String data = Strings.fromUTF8ByteArray(byteOut.toByteArray());
-                mMessage.setText(data);
-            } catch (FileNotFoundException e) {
-                // ignore, then
-            } catch (IOException e) {
-                // ignore, then
-            }
-        } else if (intent.getAction() != null && intent.getAction().equals(Apg.Intent.DECRYPT)) {
-            String data = intent.getExtras().getString("data");
-            if (data != null) {
-                Matcher matcher = Apg.PGP_MESSAGE.matcher(data);
-                if (matcher.matches()) {
-                    data = matcher.group(1);
-                    // replace non breakable spaces
-                    data = data.replaceAll("\\xa0", " ");
-                    mMessage.setText(data);
-                } else {
-                    matcher = Apg.PGP_SIGNED_MESSAGE.matcher(data);
-                    if (matcher.matches()) {
-                        data = matcher.group(1);
-                        // replace non breakable spaces
-                        data = data.replaceAll("\\xa0", " ");
-                        mMessage.setText(data);
-                        mDecryptButton.setText(R.string.btn_verify);
-                    }
-                }
-            }
-            mReplyTo = intent.getExtras().getString("replyTo");
-            mSubject = intent.getExtras().getString("subject");
-        } else {
-            ClipboardManager clip = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
-            String data = "";
-            Matcher matcher = Apg.PGP_MESSAGE.matcher(clip.getText());
-            if (matcher.matches()) {
-                data = matcher.group(1);
-                mMessage.setText(data);
-                Toast.makeText(this, R.string.using_clipboard_content, Toast.LENGTH_SHORT).show();
-            }
-        }
-
-        mSignatureLayout.setVisibility(View.INVISIBLE);
-
-        mDecryptButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                decryptClicked();
-            }
-        });
-
-        if (mMessage.getText().length() > 0) {
-            mDecryptButton.performClick();
-        }
-    }
-
-    private void decryptClicked() {
-        String error = null;
-        String messageData = mMessage.getText().toString();
-        Matcher matcher = Apg.PGP_SIGNED_MESSAGE.matcher(messageData);
-        if (matcher.matches()) {
-            mSignedOnly = true;
-            decryptStart();
-            return;
-        }
-
-        // else treat it as an encrypted message
-        mSignedOnly = false;
-        try {
-            ByteArrayInputStream in = new ByteArrayInputStream(messageData.getBytes());
-            setSecretKeyId(Apg.getDecryptionKeyId(in));
-            if (getSecretKeyId() == 0) {
-                throw new Apg.GeneralException("no suitable secret key found");
-            }
-            showDialog(Id.dialog.pass_phrase);
-        } catch (IOException e) {
-            error = e.getLocalizedMessage();
-        } catch (Apg.GeneralException e) {
-            error = e.getLocalizedMessage();
-        } catch (Apg.NoAsymmetricEncryptionException e) {
-            error = "no asymmetric encryption found";
-        }
-        if (error != null) {
-            Toast.makeText(this, "Error: " + error, Toast.LENGTH_SHORT).show();
-        }
-    }
-
-    private void replyClicked() {
-        Intent intent = new Intent(this, EncryptActivity.class);
-        intent.setAction(Apg.Intent.ENCRYPT);
-        String data = mMessage.getText().toString();
-        data = data.replaceAll("(?m)^", "> ");
-        data = "\n\n" + data;
-        intent.putExtra("data", data);
-        intent.putExtra("subject", "Re: " + mSubject);
-        intent.putExtra("sendTo", mReplyTo);
-        intent.putExtra("eyId", mSignatureKeyId);
-        intent.putExtra("signatureKeyId", getSecretKeyId());
-        intent.putExtra("encryptionKeyIds", new long[] { mSignatureKeyId });
-        startActivity(intent);
-    }
-
-    @Override
-    public void passPhraseCallback(String passPhrase) {
-        super.passPhraseCallback(passPhrase);
-        decryptStart();
-    }
-
-    private void decryptStart() {
-        showDialog(Id.dialog.decrypting);
-        startThread();
-    }
-
-    @Override
-    public void run() {
-        String error = null;
-        Security.addProvider(new BouncyCastleProvider());
-
-        Bundle data = new Bundle();
-        Message msg = new Message();
-
-        String messageData = mMessage.getText().toString();
-
-        try {
-            ByteArrayInputStream in = new ByteArrayInputStream(messageData.getBytes());
-            ByteArrayOutputStream out = new ByteArrayOutputStream();
-
-            if (mSignedOnly) {
-                data = Apg.verifyText(in, out, this);
-            } else {
-                data = Apg.decrypt(in, out, Apg.getPassPhrase(), this, false);
-            }
-
-            out.close();
-            data.putString("decryptedMessage", Strings.fromUTF8ByteArray(out.toByteArray()));
-        } catch (PGPException e) {
-            error = e.getMessage();
-        } catch (IOException e) {
-            error = e.getMessage();
-        } catch (SignatureException e) {
-            error = e.getMessage();
-            e.printStackTrace();
-        } catch (Apg.GeneralException e) {
-            error = e.getMessage();
-        }
-
-        data.putInt("type", Id.message.done);
-
-        if (error != null) {
-            data.putString("error", error);
-        }
-
-        msg.setData(data);
-        sendMessage(msg);
-    }
-
-    @Override
-    public void doneCallback(Message msg) {
-        super.doneCallback(msg);
-
-        Bundle data = msg.getData();
-        removeDialog(Id.dialog.decrypting);
-        mSignatureKeyId = 0;
-        String error = data.getString("error");
-        String decryptedMessage = data.getString("decryptedMessage");
-        if (error != null) {
-            Toast.makeText(DecryptMessageActivity.this,
-                           "Error: " + data.getString("error"),
-                           Toast.LENGTH_SHORT).show();
-        }
-        mSignatureLayout.setVisibility(View.INVISIBLE);
-        if (decryptedMessage != null) {
-            mMessage.setText(decryptedMessage);
-            mDecryptButton.setText(R.string.btn_reply);
-            mDecryptButton.setOnClickListener(new OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    replyClicked();
-                }
-            });
-
-            if (data.getBoolean("signature")) {
-                String userId = data.getString("signatureUserId");
-                mSignatureKeyId = data.getLong("signatureKeyId");
-                mUserIdRest.setText("id: " + Long.toHexString(mSignatureKeyId & 0xffffffffL));
-                if (userId == null) {
-                    userId = getResources().getString(R.string.unknown_user_id);
-                }
-                String chunks[] = userId.split(" <", 2);
-                userId = chunks[0];
-                if (chunks.length > 1) {
-                    mUserIdRest.setText("<" + chunks[1]);
-                }
-                mUserId.setText(userId);
-
-                if (data.getBoolean("signatureSuccess")) {
-                    mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
-                } else if (data.getBoolean("signatureUnknown")) {
-                    mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
-                } else {
-                    mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
-                }
-                mSignatureLayout.setVisibility(View.VISIBLE);
-            }
-        }
-    }
-}
diff --git a/src/org/thialfihar/android/apg/Id.java b/src/org/thialfihar/android/apg/Id.java
index 601a0eef4..98ea2ebf8 100644
--- a/src/org/thialfihar/android/apg/Id.java
+++ b/src/org/thialfihar/android/apg/Id.java
@@ -108,5 +108,6 @@ public final class Id {
         public static final int clipboard = 0x21070001;
         public static final int email = 0x21070002;
         public static final int file = 0x21070003;
+        public static final int message = 0x21070004;
     }
 }
diff --git a/src/org/thialfihar/android/apg/MailListActivity.java b/src/org/thialfihar/android/apg/MailListActivity.java
index c0bed5985..7ad0d7fd1 100644
--- a/src/org/thialfihar/android/apg/MailListActivity.java
+++ b/src/org/thialfihar/android/apg/MailListActivity.java
@@ -150,7 +150,7 @@ public class MailListActivity extends ListActivity {
         getListView().setOnItemClickListener(new OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
-                Intent intent = new Intent(MailListActivity.this, DecryptMessageActivity.class);
+                Intent intent = new Intent(MailListActivity.this, DecryptActivity.class);
                 intent.setAction(Apg.Intent.DECRYPT);
                 Message message = (Message) ((MailboxAdapter) getListAdapter()).getItem(position);
                 intent.putExtra("data", message.data);
diff --git a/src/org/thialfihar/android/apg/MainActivity.java b/src/org/thialfihar/android/apg/MainActivity.java
index 8a8d57a89..049022656 100644
--- a/src/org/thialfihar/android/apg/MainActivity.java
+++ b/src/org/thialfihar/android/apg/MainActivity.java
@@ -71,7 +71,9 @@ public class MainActivity extends BaseActivity {
         decryptMessageButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
-                startActivity(new Intent(MainActivity.this, DecryptMessageActivity.class));
+                Intent intent = new Intent(MainActivity.this, DecryptActivity.class);
+                intent.setAction(Apg.Intent.DECRYPT);
+                startActivity(intent);
             }
         });
 
@@ -87,7 +89,9 @@ public class MainActivity extends BaseActivity {
         decryptFileButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
-                startActivity(new Intent(MainActivity.this, DecryptFileActivity.class));
+                Intent intent = new Intent(MainActivity.this, DecryptActivity.class);
+                intent.setAction(Apg.Intent.DECRYPT_FILE);
+                startActivity(intent);
             }
         });
 
@@ -211,7 +215,7 @@ public class MainActivity extends BaseActivity {
                 message.setText("Read the warnings!\n\n" +
                                 "Changes:\n" +
                                 "* encrypt to clipboard\n" +
-                                "* new encrypt GUI to handle everything\n" +
+                                "* new encrypt/decrypt GUI to handle everything\n" +
                                 "\n" +
                                 "WARNING: be careful editing your existing keys, as they " +
                                 "WILL be stripped of certificates right now.\n" +