implemented secret keys without passphrase

org_apg/res/layout/decrypt.xml

@@ -25,15 +25,14 @@
         xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
-        android:fillViewport="true"
+        android:fillViewport="true" >
-        android:paddingLeft="10dp"
-        android:paddingRight="10dp" >
 
         <LinearLayout
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
-            android:padding="4dp" >
+            android:paddingLeft="10dp"
+            android:paddingRight="10dp" >
 
             <LinearLayout
                 android:layout_width="fill_parent"

org_apg/res/values/strings.xml

@@ -98,7 +98,7 @@
     <string name="menu_keyServer">Key Server</string>
     <string name="menu_updateKey">Update</string>
     <string name="menu_exportKeyToServer">Export To Server</string>
-    <string name="menu_share">Share</string>
+    <string name="menu_share">Share with QR Code</string>
     <string name="menu_scanQRCode">Scan QR Code</string>
     <string name="menu_signKey">Sign Key</string>
 

org_apg/src/org/apg/Apg.java

@@ -27,6 +27,7 @@ import org.apg.ui.widget.KeyEditor;
 import org.apg.ui.widget.SectionView;
 import org.apg.ui.widget.UserIdEditor;
 import org.apg.util.IterableIterator;
+import org.apg.util.Utils;
 import org.spongycastle.bcpg.ArmoredInputStream;
 import org.spongycastle.bcpg.ArmoredOutputStream;
 import org.spongycastle.bcpg.BCPGOutputStream;
@@ -155,6 +156,7 @@ public class Apg {
     public static final String EXTRA_BINARY = "binary";
     public static final String EXTRA_KEY_SERVERS = "keyServers";
     public static final String EXTRA_EXPECTED_FINGERPRINT = "expectedFingerprint";
+    public static final String EXTRA_NO_PASSPHRASE = "noPassphrase";
 
     public static final String AUTHORITY = DataProvider.AUTHORITY;
 
@@ -374,18 +376,6 @@ public class Apg {
         return secretKey;
     }
 
-    private static long getNumDaysBetween(GregorianCalendar first, GregorianCalendar second) {
-        GregorianCalendar tmp = new GregorianCalendar();
-        tmp.setTime(first.getTime());
-        long numDays = (second.getTimeInMillis() - first.getTimeInMillis()) / 1000 / 86400;
-        tmp.add(Calendar.DAY_OF_MONTH, (int) numDays);
-        while (tmp.before(second)) {
-            tmp.add(Calendar.DAY_OF_MONTH, 1);
-            ++numDays;
-        }
-        return numDays;
-    }
-
     public static void buildSecretKey(Activity context, SectionView userIdsView,
             SectionView keysView, String oldPassPhrase, String newPassPhrase,
             ProgressDialogUpdater progress) throws Apg.GeneralException, NoSuchProviderException,
@@ -509,7 +499,7 @@ public class Apg {
             GregorianCalendar creationDate = new GregorianCalendar();
             creationDate.setTime(getCreationDate(masterKey));
             GregorianCalendar expiryDate = keyEditor.getExpiryDate();
-            long numDays = getNumDaysBetween(creationDate, expiryDate);
+            long numDays = Utils.getNumDaysBetween(creationDate, expiryDate);
             if (numDays <= 0) {
                 throw new GeneralException(
                         context.getString(R.string.error_expiryMustComeAfterCreation));
@@ -517,8 +507,10 @@ public class Apg {
             hashedPacketsGen.setKeyExpirationTime(true, numDays * 86400);
         }
 
-        if (progress != null)
+        if (progress != null) {
             progress.setProgress(R.string.progress_buildingMasterKeyRing, 30, 100);
+        }
+
         PGPKeyRingGenerator keyGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION,
                 masterKeyPair, mainUserId, PGPEncryptedData.CAST5, newPassPhrase.toCharArray(),
                 hashedPacketsGen.generate(), unhashedPacketsGen.generate(), new SecureRandom(),
@@ -558,7 +550,7 @@ public class Apg {
                 GregorianCalendar creationDate = new GregorianCalendar();
                 creationDate.setTime(getCreationDate(masterKey));
                 GregorianCalendar expiryDate = keyEditor.getExpiryDate();
-                long numDays = getNumDaysBetween(creationDate, expiryDate);
+                long numDays = Utils.getNumDaysBetween(creationDate, expiryDate);
                 if (numDays <= 0) {
                     throw new GeneralException(
                             context.getString(R.string.error_expiryMustComeAfterCreation));
@@ -2202,7 +2194,7 @@ public class Apg {
                 return false;
             }
         } catch (NameNotFoundException e) {
-            // unpossible!
+            // impossible!
             return false;
         }
     }
@@ -2216,7 +2208,7 @@ public class Apg {
             VERSION = pi.versionName;
             return VERSION;
         } catch (NameNotFoundException e) {
-            // unpossible!
+            // impossible!
             return "0.0.0";
         }
     }

org_apg/src/org/apg/AskForSecretKeyPassPhrase.java

@@ -28,6 +28,7 @@ import android.app.Dialog;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.EditText;
@@ -86,7 +87,7 @@ public class AskForSecretKeyPassPhrase {
         alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int id) {
                 activity.removeDialog(Id.dialog.pass_phrase);
-                String passPhrase = "" + input.getText();
+                String passPhrase = input.getText().toString();
                 long keyId;
                 if (secretKey != null) {
                     try {
@@ -116,6 +117,23 @@ public class AskForSecretKeyPassPhrase {
             }
         });
 
+        // check if the key has no passphrase
+        if (secretKey != null) {
+            try {
+                Log.d("APG", "check if key has no passphrase...");
+                PGPPrivateKey testKey = secretKey.extractPrivateKey("".toCharArray(),
+                        new BouncyCastleProvider());
+                if (testKey != null) {
+                    Log.d("APG", "Key has no passphrase!");
+
+                    cb.passPhraseCallback(secretKey.getKeyID(), null);
+
+                    return null;
+                }
+            } catch (PGPException e) {
+
+            }
+        }
         return alert.create();
     }
 }

org_apg/src/org/apg/ui/DecryptActivity.java

@@ -118,15 +118,11 @@ public class DecryptActivity extends BaseActivity {
     public boolean onCreateOptionsMenu(Menu menu) {
 
         if (mDecryptEnabled) {
-            menu.add(1, Id.menu.option.decrypt, 0, mDecryptString)
+            menu.add(1, Id.menu.option.decrypt, 0, mDecryptString).setShowAsAction(
-            // .setIcon(R.drawable.ic_menu_encrypt)
-                    .setShowAsAction(
                     MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
         }
         if (mReplyEnabled) {
-            menu.add(1, Id.menu.option.reply, 1, mReplyString)
+            menu.add(1, Id.menu.option.reply, 1, mReplyString).setShowAsAction(
-            // .setIcon(R.drawable.ic_menu_decrypt)
-                    .setShowAsAction(
                     MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
         }
 
@@ -275,9 +271,8 @@ public class DecryptActivity extends BaseActivity {
                         // replace non breakable spaces
                         textData = textData.replaceAll("\\xa0", " ");
                         mMessage.setText(textData);
-                        mDecryptString = getString(R.string.btn_verify);
-                        // mDecryptButton.setText(R.string.btn_verify);
                         
+                        mDecryptString = getString(R.string.btn_verify);
                         // build new action bar
                         invalidateOptionsMenu();
                     } else {
@@ -399,8 +394,6 @@ public class DecryptActivity extends BaseActivity {
 
         if (mSource.getCurrentView().getId() == R.id.sourceMessage
                 && (mMessage.getText().length() > 0 || mData != null || mContentUri != null)) {
-            // mDecryptButton.performClick();
-            // TODO: why was it performClick()???
             decryptClicked();
         }
     }

org_apg/src/org/apg/ui/EditKeyActivity.java

@@ -38,7 +38,6 @@ import android.app.Dialog;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
-import android.net.Uri;
 import android.os.Bundle;
 import android.os.Message;
 import android.view.LayoutInflater;
@@ -49,7 +48,6 @@ import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.EditText;
 import android.widget.LinearLayout;
-import android.widget.TableRow;
 import android.widget.Toast;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 
@@ -72,6 +70,8 @@ public class EditKeyActivity extends BaseActivity {
 
     private Button mChangePassPhrase;
 
+    private CheckBox mNoPassphrase;
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         menu.add(1, Id.menu.option.cancel, 0, R.string.btn_doNotSave).setShowAsAction(
@@ -152,6 +152,14 @@ public class EditKeyActivity extends BaseActivity {
             if (extras.containsKey(Apg.EXTRA_USER_IDS)) {
                 userIds.add(extras.getString(Apg.EXTRA_USER_IDS));
             }
+
+            // if userId is given, prefill the fields
+            if (extras.containsKey(Apg.EXTRA_NO_PASSPHRASE)) {
+                boolean noPassphrase = extras.getBoolean(Apg.EXTRA_NO_PASSPHRASE);
+                if (noPassphrase) {
+                    mCurrentPassPhrase = "";
+                }
+            }
         }
 
         mChangePassPhrase = (Button) findViewById(R.id.edit_key_btn_change_pass_phrase);
@@ -162,12 +170,15 @@ public class EditKeyActivity extends BaseActivity {
         });
 
         // disable passphrase when no passphrase checkobox is checked!
-        final CheckBox noPassphrase = (CheckBox) findViewById(R.id.edit_key_no_passphrase);
+        mNoPassphrase = (CheckBox) findViewById(R.id.edit_key_no_passphrase);
-        noPassphrase.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+        mNoPassphrase.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                 if (isChecked) {
+                    // remove passphrase
+                    mNewPassPhrase = null;
+
                     mChangePassPhrase.setVisibility(View.GONE);
                 } else {
                     mChangePassPhrase.setVisibility(View.VISIBLE);
@@ -194,6 +205,12 @@ public class EditKeyActivity extends BaseActivity {
             mCurrentPassPhrase = "";
         }
 
+        if (mCurrentPassPhrase.equals("")) {
+            // check "no passphrase" checkbox and remove button
+            mNoPassphrase.setChecked(true);
+            mChangePassPhrase.setVisibility(View.GONE);
+        }
+
         updatePassPhraseButtonText();
     }
 
@@ -204,9 +221,15 @@ public class EditKeyActivity extends BaseActivity {
         return ((KeyEditor) mKeys.getEditors().getChildAt(0)).getValue().getKeyID();
     }
 
-    public boolean havePassPhrase() {
+    public boolean isPassphraseSet() {
-        return (!mCurrentPassPhrase.equals(""))
+        if (mNoPassphrase.isChecked()) {
-                || (mNewPassPhrase != null && !mNewPassPhrase.equals(""));
+            return true;
+        } else if ((!mCurrentPassPhrase.equals(""))
+                || (mNewPassPhrase != null && !mNewPassPhrase.equals(""))) {
+            return true;
+        } else {
+            return false;
+        }
     }
 
     @Override
@@ -215,7 +238,7 @@ public class EditKeyActivity extends BaseActivity {
         case Id.dialog.new_pass_phrase: {
             AlertDialog.Builder alert = new AlertDialog.Builder(this);
 
-            if (havePassPhrase()) {
+            if (isPassphraseSet()) {
                 alert.setTitle(R.string.title_changePassPhrase);
             } else {
                 alert.setTitle(R.string.title_setPassPhrase);
@@ -266,7 +289,7 @@ public class EditKeyActivity extends BaseActivity {
     }
 
     private void saveClicked() {
-        if (!havePassPhrase()) {
+        if (!isPassphraseSet()) {
             Toast.makeText(this, R.string.setAPassPhrase, Toast.LENGTH_SHORT).show();
             return;
         }
@@ -333,7 +356,7 @@ public class EditKeyActivity extends BaseActivity {
     }
 
     private void updatePassPhraseButtonText() {
-        mChangePassPhrase.setText(havePassPhrase() ? R.string.btn_changePassPhrase
+        mChangePassPhrase.setText(isPassphraseSet() ? R.string.btn_changePassPhrase
                 : R.string.btn_setPassPhrase);
     }
 }

org_apg/src/org/apg/ui/SecretKeyListActivity.java

@@ -49,15 +49,13 @@ public class SecretKeyListActivity extends KeyListActivity implements OnChildCli
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         menu.add(3, Id.menu.option.search, 0, R.string.menu_search)
-                .setIcon(R.drawable.ic_menu_search)
+                .setIcon(R.drawable.ic_menu_search).setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
-                .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
+        menu.add(1, Id.menu.option.create, 1, R.string.menu_createKey).setShowAsAction(
-        menu.add(1, Id.menu.option.create, 1, R.string.menu_createKey)
-                .setShowAsAction(
                 MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
-        menu.add(0, Id.menu.option.import_keys, 2, R.string.menu_importKeys)
+        menu.add(0, Id.menu.option.import_keys, 2, R.string.menu_importKeys).setShowAsAction(
-                .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
+                MenuItem.SHOW_AS_ACTION_NEVER | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
-        menu.add(0, Id.menu.option.export_keys, 3, R.string.menu_exportKeys)
+        menu.add(0, Id.menu.option.export_keys, 3, R.string.menu_exportKeys).setShowAsAction(
-                .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
+                MenuItem.SHOW_AS_ACTION_NEVER | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
 
         return true;
     }
@@ -114,7 +112,6 @@ public class SecretKeyListActivity extends KeyListActivity implements OnChildCli
             long keyId = ((KeyListAdapter) mList.getExpandableListAdapter())
                     .getGroupId(mSelectedItem);
             String msg = keyId + "," + Apg.getFingerPrint(keyId);
-            ;
 
             new IntentIntegrator(this).shareText(msg);
         }

org_apg/src/org/apg/util/Utils.java

@@ -19,6 +19,8 @@ package org.apg.util;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
 
 import android.content.Context;
 
@@ -51,4 +53,23 @@ public class Utils {
         return stream.toString();
     }
 
+    /**
+     * Return the number if days between two dates
+     * 
+     * @param first
+     * @param second
+     * @return number of days
+     */
+    public static long getNumDaysBetween(GregorianCalendar first, GregorianCalendar second) {
+        GregorianCalendar tmp = new GregorianCalendar();
+        tmp.setTime(first.getTime());
+        long numDays = (second.getTimeInMillis() - first.getTimeInMillis()) / 1000 / 86400;
+        tmp.add(Calendar.DAY_OF_MONTH, (int) numDays);
+        while (tmp.before(second)) {
+            tmp.add(Calendar.DAY_OF_MONTH, 1);
+            ++numDays;
+        }
+        return numDays;
+    }
+
 }