diff --git a/res/layout/encrypt_file.xml b/res/layout/encrypt_file.xml
index 3ea2f06ac..c104c596e 100644
--- a/res/layout/encrypt_file.xml
+++ b/res/layout/encrypt_file.xml
@@ -60,6 +60,12 @@
 
             </LinearLayout>
 
+            <View
+                android:layout_width="fill_parent"
+                android:layout_height="1dip"
+                android:background="?android:attr/listDivider"
+                android:layout_marginBottom="5dip"/>
+
             <LinearLayout
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -112,76 +118,29 @@
                 android:background="?android:attr/listDivider"
                 android:layout_marginBottom="5dip"/>
 
-            <LinearLayout
+            <RadioGroup
+                android:id="@+id/encryption_mode"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:orientation="horizontal">
 
-                <TextView
-                    android:id="@+id/label_sign"
-                    android:text="@string/label_sign"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
-                    android:layout_width="0dip"
-                    android:layout_weight="1"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="center_vertical"/>
-
-                <LinearLayout
-                    android:orientation="vertical"
-                    android:layout_height="wrap_content"
-                    android:layout_width="wrap_content"
-                    android:layout_gravity="center_vertical"
-                    android:paddingRight="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="right"/>
-
-                    <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="right"/>
-
-                </LinearLayout>
-
-                <CheckBox
-                    android:id="@+id/sign"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="center_vertical"/>
-
-            </LinearLayout>
-
-            <LinearLayout
-                android:layout_width="fill_parent"
-                android:layout_height="wrap_content"
-                android:paddingBottom="3dip"
-                android:orientation="horizontal">
-
-                <TextView
-                    android:id="@+id/label_select_public_keys"
-                    android:text="@string/label_select_public_keys"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
+                <RadioButton
+                    android:id="@+id/use_asymmetric"
+                    android:text="@string/use_asymmetric"
                     android:layout_height="wrap_content"
                     android:layout_width="0dip"
                     android:layout_weight="1"
                     android:layout_gravity="center_vertical"/>
 
-                <Button
-                    android:text="@string/btn_selectEncryptKeys"
-                    android:id="@+id/btn_selectEncryptKeys"
-                    android:layout_width="wrap_content"
+                <RadioButton
+                    android:id="@+id/use_symmetric"
+                    android:text="@string/use_symmetric"
                     android:layout_height="wrap_content"
+                    android:layout_width="0dip"
+                    android:layout_weight="1"
                     android:layout_gravity="center_vertical"/>
 
-            </LinearLayout>
+            </RadioGroup>
 
             <View
                 android:layout_width="fill_parent"
@@ -190,30 +149,85 @@
                 android:layout_marginBottom="5dip"/>
 
             <LinearLayout
+                android:id="@+id/layout_asymmetric"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
-                android:orientation="horizontal">
+                android:orientation="vertical">
 
-                <TextView
-                    android:id="@+id/label_use_pass_phrase"
-                    android:text="@string/label_use_pass_phrase"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
-                    android:layout_gravity="center_vertical"
-                    android:paddingRight="10dip"
+                <LinearLayout
+                    android:layout_width="fill_parent"
                     android:layout_height="wrap_content"
-                    android:layout_width="0dip"
-                    android:layout_weight="1"/>
+                    android:orientation="horizontal">
 
-                <CheckBox
-                    android:id="@+id/use_pass_phrase"
+                    <TextView
+                        android:id="@+id/label_sign"
+                        android:text="@string/label_sign"
+                        android:textAppearance="?android:attr/textAppearanceMedium"
+                        android:layout_width="0dip"
+                        android:layout_weight="1"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="center_vertical"/>
+
+                    <LinearLayout
+                        android:orientation="vertical"
+                        android:layout_height="wrap_content"
+                        android:layout_width="wrap_content"
+                        android:layout_gravity="center_vertical"
+                        android:paddingRight="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="right"/>
+
+                        <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="right"/>
+
+                    </LinearLayout>
+
+                    <CheckBox
+                        android:id="@+id/sign"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="center_vertical"/>
+
+                </LinearLayout>
+
+                <LinearLayout
+                    android:layout_width="fill_parent"
                     android:layout_height="wrap_content"
-                    android:layout_width="wrap_content"
-                    android:layout_gravity="center_vertical"/>
+                    android:paddingBottom="3dip"
+                    android:orientation="horizontal">
 
+                    <TextView
+                        android:id="@+id/label_select_public_keys"
+                        android:text="@string/label_select_public_keys"
+                        android:textAppearance="?android:attr/textAppearanceMedium"
+                        android:layout_height="wrap_content"
+                        android:layout_width="0dip"
+                        android:layout_weight="1"
+                        android:layout_gravity="center_vertical"/>
+
+                    <Button
+                        android:text="@string/btn_selectEncryptKeys"
+                        android:id="@+id/btn_selectEncryptKeys"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="center_vertical"/>
+
+                </LinearLayout>
             </LinearLayout>
 
             <TableLayout
-                android:id="@+id/layout_pass_phrase"
+                android:id="@+id/layout_symmetric"
                 android:layout_height="wrap_content"
                 android:layout_width="fill_parent"
                 android:stretchColumns="1">
@@ -223,6 +237,7 @@
                     <TextView
                         android:id="@+id/label_pass_phrase"
                         android:text="@string/label_pass_phrase"
+                        android:textAppearance="?android:attr/textAppearanceMedium"
                         android:layout_height="wrap_content"
                         android:layout_width="wrap_content"
                         android:layout_gravity="center_vertical"
@@ -241,6 +256,7 @@
                     <TextView
                         android:id="@+id/label_pass_phrase_again"
                         android:text="@string/label_pass_phrase_again"
+                        android:textAppearance="?android:attr/textAppearanceMedium"
                         android:layout_height="wrap_content"
                         android:layout_width="wrap_content"
                         android:layout_gravity="center_vertical"
@@ -256,6 +272,12 @@
 
             </TableLayout>
 
+            <View
+                android:layout_width="fill_parent"
+                android:layout_height="1dip"
+                android:background="?android:attr/listDivider"
+                android:layout_marginBottom="5dip"/>
+
         </LinearLayout>
 
     </ScrollView>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index e820dc16e..5fefc599d 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -65,11 +65,13 @@
     <string name="label_algorithm">Algorithm</string>
     <string name="label_ascii_armour">ASCII Armour</string>
     <string name="label_select_public_keys">Public Key(s)</string>
-    <string name="label_use_pass_phrase">Use Pass Phrase</string>
 
     <string name="label_encryption_algorithm">Encryption Algorithm</string>
     <string name="label_hash_algorithm">Hash Algorithm</string>
 
+    <string name="use_asymmetric">Public Key</string>
+    <string name="use_symmetric">Pass Phrase</string>
+
     <string name="section_defaults">Defaults</string>
 
     <string name="sign_only">Sign only</string>
diff --git a/src/org/thialfihar/android/apg/Apg.java b/src/org/thialfihar/android/apg/Apg.java
index 8596bdafc..31720c5af 100644
--- a/src/org/thialfihar/android/apg/Apg.java
+++ b/src/org/thialfihar/android/apg/Apg.java
@@ -138,11 +138,6 @@ public class Apg {
 
     protected static boolean mInitialized = false;
 
-    protected static final int RETURN_NO_MASTER_KEY = -2;
-    protected static final int RETURN_ERROR = -1;
-    protected static final int RETURN_OK = 0;
-    protected static final int RETURN_UPDATED = 1;
-
     protected static HashMap<Long, Integer> mSecretKeyIdToIdMap;
     protected static HashMap<Long, PGPSecretKeyRing> mSecretKeyIdToKeyRingMap;
     protected static HashMap<Long, Integer> mPublicKeyIdToIdMap;
@@ -586,14 +581,14 @@ public class Apg {
 
         PGPPublicKey masterKey = getMasterKey(keyRing);
         if (masterKey == null) {
-            return RETURN_NO_MASTER_KEY;
+            return Id.return_value.no_master_key;
         }
 
         try {
             keyRing.encode(out);
             out.close();
         } catch (IOException e) {
-            return RETURN_ERROR;
+            return Id.return_value.error;
         }
 
         values.put(PublicKeys.KEY_ID, masterKey.getKeyID());
@@ -603,10 +598,10 @@ public class Apg {
         Cursor cursor = context.managedQuery(uri, PUBLIC_KEY_PROJECTION, null, null, null);
         if (cursor != null && cursor.getCount() > 0) {
             context.getContentResolver().update(uri, values, null, null);
-            return RETURN_UPDATED;
+            return Id.return_value.updated;
         } else {
             context.getContentResolver().insert(PublicKeys.CONTENT_URI, values);
-            return RETURN_OK;
+            return Id.return_value.ok;
         }
     }
 
@@ -616,14 +611,14 @@ public class Apg {
 
         PGPSecretKey masterKey = getMasterKey(keyRing);
         if (masterKey == null) {
-            return RETURN_NO_MASTER_KEY;
+            return Id.return_value.no_master_key;
         }
 
         try {
             keyRing.encode(out);
             out.close();
         } catch (IOException e) {
-            return RETURN_ERROR;
+            return Id.return_value.error;
         }
 
         values.put(SecretKeys.KEY_ID, masterKey.getKeyID());
@@ -633,10 +628,10 @@ public class Apg {
         Cursor cursor = context.managedQuery(uri, SECRET_KEY_PROJECTION, null, null, null);
         if (cursor != null && cursor.getCount() > 0) {
             context.getContentResolver().update(uri, values, null, null);
-            return RETURN_UPDATED;
+            return Id.return_value.updated;
         } else {
             context.getContentResolver().insert(SecretKeys.CONTENT_URI, values);
-            return RETURN_OK;
+            return Id.return_value.ok;
         }
     }
 
@@ -690,13 +685,13 @@ public class Apg {
                 retValue = saveKeyRing(context, publicKeyRing);
             }
 
-            if (retValue == RETURN_ERROR) {
+            if (retValue == Id.return_value.error) {
                 throw new GeneralException("error saving some key(s)");
             }
 
-            if (retValue == RETURN_UPDATED) {
+            if (retValue == Id.return_value.updated) {
                 ++oldKeys;
-            } else if (retValue == RETURN_OK) {
+            } else if (retValue == Id.return_value.ok) {
                 ++newKeys;
             }
         }
diff --git a/src/org/thialfihar/android/apg/EncryptFileActivity.java b/src/org/thialfihar/android/apg/EncryptFileActivity.java
index 0c5ce20c0..0dcb44989 100644
--- a/src/org/thialfihar/android/apg/EncryptFileActivity.java
+++ b/src/org/thialfihar/android/apg/EncryptFileActivity.java
@@ -51,9 +51,11 @@ import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.EditText;
 import android.widget.ImageButton;
+import android.widget.RadioGroup;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
+import android.widget.RadioGroup.OnCheckedChangeListener;
 
 public class EncryptFileActivity extends BaseActivity {
     private EditText mFilename = null;
@@ -65,8 +67,9 @@ public class EncryptFileActivity extends BaseActivity {
     private EditText mPassPhrase = null;
     private EditText mPassPhraseAgain = null;
     private CheckBox mAsciiArmour = null;
-    private CheckBox mUsePassPhrase = null;
-    private ViewGroup mPassPhraseLayout = null;
+    private RadioGroup mEncryptionMode = null;
+    private ViewGroup mAsymmetricLayout = null;
+    private ViewGroup mSymmetricLayout = null;
     private Button mEncryptButton = null;
     private Button mSelectKeysButton = null;
 
@@ -145,28 +148,36 @@ public class EncryptFileActivity extends BaseActivity {
             }
         }
 
-        mUsePassPhrase = (CheckBox) findViewById(R.id.use_pass_phrase);
-        mPassPhraseLayout = (ViewGroup) findViewById(R.id.layout_pass_phrase);
+        mEncryptionMode = (RadioGroup) findViewById(R.id.encryption_mode);
+        mAsymmetricLayout = (ViewGroup) findViewById(R.id.layout_asymmetric);
+        mSymmetricLayout = (ViewGroup) findViewById(R.id.layout_symmetric);
         mPassPhrase = (EditText) findViewById(R.id.pass_phrase);
         mPassPhraseAgain = (EditText) findViewById(R.id.pass_phrase_again);
 
-        mUsePassPhrase.setOnClickListener(new OnClickListener() {
+        mEncryptionMode.check(R.id.use_asymmetric);
+        mEncryptionMode.setOnCheckedChangeListener(new OnCheckedChangeListener() {
             @Override
-            public void onClick(View v) {
-                CheckBox checkBox = (CheckBox) v;
-                if (checkBox.isChecked()) {
-                    mPassPhraseLayout.setVisibility(ViewGroup.VISIBLE);
+            public void onCheckedChanged(RadioGroup group, int checkedId) {
+                if (checkedId == R.id.use_symmetric) {
+                    mAsymmetricLayout.setVisibility(ViewGroup.GONE);
+                    mSymmetricLayout.setVisibility(ViewGroup.VISIBLE);
+                    mEncryptionKeyIds = null;
+                    setSecretKeyId(0);
                 } else {
+                    mAsymmetricLayout.setVisibility(ViewGroup.VISIBLE);
+                    mSymmetricLayout.setVisibility(ViewGroup.GONE);
                     mPassPhrase.setText("");
                     mPassPhraseAgain.setText("");
-                    mPassPhraseLayout.setVisibility(ViewGroup.GONE);
                 }
+                updateView();
             }
         });
-        if (mUsePassPhrase.isChecked()) {
-            mPassPhraseLayout.setVisibility(ViewGroup.VISIBLE);
+        if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
+            mAsymmetricLayout.setVisibility(ViewGroup.GONE);
+            mSymmetricLayout.setVisibility(ViewGroup.VISIBLE);
         } else {
-            mPassPhraseLayout.setVisibility(ViewGroup.GONE);
+            mAsymmetricLayout.setVisibility(ViewGroup.VISIBLE);
+            mSymmetricLayout.setVisibility(ViewGroup.GONE);
         }
 
         mEncryptButton.setOnClickListener(new OnClickListener() {
@@ -258,8 +269,8 @@ public class EncryptFileActivity extends BaseActivity {
         }
 
         // symmetric encryption
-        boolean gotPassPhrase = false;
-        if (mUsePassPhrase.isChecked()) {
+        if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
+            boolean gotPassPhrase = false;
             String passPhrase = mPassPhrase.getText().toString();
             String passPhraseAgain = mPassPhraseAgain.getText().toString();
             if (!passPhrase.equals(passPhraseAgain)) {
@@ -274,19 +285,19 @@ public class EncryptFileActivity extends BaseActivity {
                                Toast.LENGTH_SHORT).show();
                 return;
             }
-        }
+        } else {
+            boolean encryptIt = mEncryptionKeyIds != null && mEncryptionKeyIds.length > 0;
+            // for now require at least one form of encryption
+            if (!encryptIt) {
+                Toast.makeText(this, "Select at least one encryption key.",
+                               Toast.LENGTH_SHORT).show();
+                return;
+            }
 
-        boolean encryptIt = mEncryptionKeyIds != null && mEncryptionKeyIds.length > 0;
-        // for now require at least one form of encryption
-        if (!encryptIt && !gotPassPhrase) {
-            Toast.makeText(this, "Select at least one encryption key or a pass phrase.",
-                           Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        if (getSecretKeyId() != 0 && Apg.getPassPhrase() == null) {
-            showDialog(Id.dialog.pass_phrase);
-            return;
+            if (getSecretKeyId() != 0 && Apg.getPassPhrase() == null) {
+                showDialog(Id.dialog.pass_phrase);
+                return;
+            }
         }
 
         askForOutputFilename();
@@ -324,16 +335,19 @@ public class EncryptFileActivity extends BaseActivity {
             InputStream in = new FileInputStream(mInputFilename);
             ByteArrayOutputStream out = new ByteArrayOutputStream();
 
-            String passPhrase = mPassPhrase.getText().toString();
-            if (passPhrase.length() == 0) {
-                passPhrase = null;
+            String passPhrase = null;
+            if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
+                passPhrase = mPassPhrase.getText().toString();
+                if (passPhrase.length() == 0) {
+                    passPhrase = null;
+                }
             }
             Apg.encrypt(in, out, mAsciiArmour.isChecked(),
-                                mEncryptionKeyIds, getSecretKeyId(),
-                                Apg.getPassPhrase(), this,
-                                ((Choice) mAlgorithm.getSelectedItem()).getId(),
-                                getDefaultHashAlgorithm(),
-                                passPhrase);
+                                 mEncryptionKeyIds, getSecretKeyId(),
+                                 Apg.getPassPhrase(), this,
+                                 ((Choice) mAlgorithm.getSelectedItem()).getId(),
+                                 getDefaultHashAlgorithm(),
+                                 passPhrase);
 
             out.close();
             OutputStream fileOut = new FileOutputStream(mOutputFilename);
diff --git a/src/org/thialfihar/android/apg/Id.java b/src/org/thialfihar/android/apg/Id.java
index b0c8368e6..08fd4b805 100644
--- a/src/org/thialfihar/android/apg/Id.java
+++ b/src/org/thialfihar/android/apg/Id.java
@@ -95,4 +95,11 @@ public final class Id {
             public static final int sign_and_encrypt = 0x21070003;
         }
     }
+
+    public static final class return_value {
+        public static final int ok = 0;
+        public static final int error = -1;
+        public static final int no_master_key = -2;
+        public static final int updated = 1;
+    }
 }