share fingerprint with qr code

OpenPGP-Keychain/res/layout/share_qr_code_dialog.xml

@@ -9,7 +9,6 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:padding="8dp"
-        android:text="@string/share_qr_code_dialog_start"
         android:textAppearance="@android:style/TextAppearance.Medium" />
 
     <ImageView

OpenPGP-Keychain/res/menu/key_view.xml

@@ -11,6 +11,10 @@
                 android:id="@+id/menu_key_view_share_default"
                 android:showAsAction="never"
                 android:title="@string/menu_share"/>
+            <item
+                android:id="@+id/menu_key_view_share_qr_code_fingerprint"
+                android:showAsAction="never"
+                android:title="@string/menu_share_qr_code_fingerprint"/>
             <item
                 android:id="@+id/menu_key_view_share_qr_code"
                 android:showAsAction="never"

OpenPGP-Keychain/res/values/strings.xml

@@ -85,7 +85,8 @@
     <string name="menu_update_key">Update from key server</string>
     <string name="menu_export_key_to_server">Upload to key server</string>
     <string name="menu_share">Share with…</string>
-    <string name="menu_share_qr_code">Share with QR Code</string>
+    <string name="menu_share_qr_code">Share with QR Code (whole key)</string>
+    <string name="menu_share_qr_code_fingerprint">Share with QR Code (fingerprint)</string>
     <string name="menu_share_nfc">Share with NFC</string>
     <string name="menu_copy_to_clipboard">Copy to clipboard</string>
     <string name="menu_sign_key">Sign key</string>
@@ -353,7 +354,9 @@
     <string name="api_error_wrong_signature">Signature check failed! Have you installed this app from a different source? If you are sure that this is not an attack, revoke this app\'s registration in OpenPGP Keychain and then register the app again.</string>
 
     <!-- Share -->
+    <string name="share_qr_code_dialog_title">Share with QR Code</string>
     <string name="share_qr_code_dialog_start">Go through all QR Codes using \'Next\', and scan them one by one.</string>
+    <string name="share_qr_code_dialog_fingerprint_text">Fingerprint:</string>
     <string name="share_qr_code_dialog_progress">QR Code with ID %1$d of %2$d</string>
     <string name="share_nfc_dialog">Share with NFC</string>
 

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java

@@ -454,6 +454,12 @@ public class PgpKeyHelper {
         return algorithmStr + ", " + keySize + " bit";
     }
 
+    /**
+     * Converts fingerprint to hex with whitespaces after 4 characters
+     * 
+     * @param fp
+     * @return
+     */
     public static String convertFingerprintToHex(byte[] fp) {
         String fingerPrint = "";
         for (int i = 0; i < fp.length; ++i) {

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java

@@ -169,8 +169,11 @@ public class ViewKeyActivity extends SherlockFragmentActivity implements CreateN
         case R.id.menu_key_view_share_default:
             shareKey(mDataUri);
             return true;
+        case R.id.menu_key_view_share_qr_code_fingerprint:
+            shareKeyQrCode(mDataUri, true);
+            return true;
         case R.id.menu_key_view_share_qr_code:
-            shareKeyQrCode(mDataUri);
+            shareKeyQrCode(mDataUri, false);
             return true;
         case R.id.menu_key_view_share_nfc:
             shareNfc();
@@ -318,10 +321,12 @@ public class ViewKeyActivity extends SherlockFragmentActivity implements CreateN
             // the first key here is our master key
             if (data.moveToFirst()) {
                 // get key id from MASTER_KEY_ID
-                String keyId = "0x"
+                long keyId = data.getLong(KEYS_INDEX_KEY_ID);
-                        + PgpKeyHelper.convertKeyIdToHex(data.getLong(KEYS_INDEX_KEY_ID));
-                mKeyId.setText(keyId);
 
+                String keyIdStr = "0x" + PgpKeyHelper.convertKeyIdToHex(keyId);
+                mKeyId.setText(keyIdStr);
+
+                // get creation date from CREATION
                 if (data.isNull(KEYS_INDEX_CREATION)) {
                     mCreation.setText(R.string.none);
                 } else {
@@ -331,6 +336,7 @@ public class ViewKeyActivity extends SherlockFragmentActivity implements CreateN
                             creationDate));
                 }
 
+                // get creation date from EXPIRY
                 if (data.isNull(KEYS_INDEX_EXPIRY)) {
                     mExpiry.setText(R.string.none);
                 } else {
@@ -344,14 +350,9 @@ public class ViewKeyActivity extends SherlockFragmentActivity implements CreateN
                         data.getInt(KEYS_INDEX_ALGORITHM), data.getInt(KEYS_INDEX_KEY_SIZE));
                 mAlgorithm.setText(algorithmStr);
 
-                // TODO: Don't get key object here!!!
+                // TODO: Can this be done better? fingerprint in db?
-                // put fingerprint in database?
+                String fingerprint = PgpKeyHelper.getFingerPrint(this, keyId);
-                PGPPublicKeyRing ring = (PGPPublicKeyRing) ProviderHelper.getPGPKeyRing(this,
-                        mDataUri);
-                PGPPublicKey publicKey = ring.getPublicKey();
 
-                String fingerprint = PgpKeyHelper.convertFingerprintToHex(publicKey
-                        .getFingerprint());
                 fingerprint = fingerprint.replace("  ", "\n");
                 mFingerprint.setText(fingerprint);
 
@@ -448,14 +449,9 @@ public class ViewKeyActivity extends SherlockFragmentActivity implements CreateN
                 getResources().getText(R.string.action_share_key_with)));
     }
 
-    private void shareKeyQrCode(Uri dataUri) {
+    private void shareKeyQrCode(Uri dataUri, boolean fingerprintOnly) {
-        // get public keyring as ascii armored string
+        ShareQrCodeDialogFragment dialog = ShareQrCodeDialogFragment.newInstance(dataUri,
-        long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
+                fingerprintOnly);
-        ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(this, dataUri,
-                new long[] { masterKeyId });
-
-        ShareQrCodeDialogFragment dialog = ShareQrCodeDialogFragment.newInstance(keyringArmored
-                .get(0));
         dialog.show(getSupportFragmentManager(), "shareQrCodeDialog");
     }
 

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/dialog/ShareQrCodeDialogFragment.java

@@ -19,12 +19,17 @@ package org.sufficientlysecure.keychain.ui.dialog;
 
 import java.util.ArrayList;
 
+import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.QrCodeUtils;
 
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.net.Uri;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -35,7 +40,8 @@ import android.widget.TextView;
 import com.actionbarsherlock.app.SherlockDialogFragment;
 
 public class ShareQrCodeDialogFragment extends SherlockDialogFragment {
-    private static final String ARG_CONTENT = "content";
+    private static final String ARG_URI = "uri";
+    private static final String ARG_FINGERPRINT_ONLY = "fingerprint_only";
 
     private ImageView mImage;
     private TextView mText;
@@ -52,10 +58,11 @@ public class ShareQrCodeDialogFragment extends SherlockDialogFragment {
      *            Content to be shared via QR Codes
      * @return
      */
-    public static ShareQrCodeDialogFragment newInstance(String content) {
+    public static ShareQrCodeDialogFragment newInstance(Uri dataUri, boolean fingerprintOnly) {
         ShareQrCodeDialogFragment frag = new ShareQrCodeDialogFragment();
         Bundle args = new Bundle();
-        args.putString(ARG_CONTENT, content);
+        args.putParcelable(ARG_URI, dataUri);
+        args.putBoolean(ARG_FINGERPRINT_ONLY, fingerprintOnly);
 
         frag.setArguments(args);
 
@@ -69,12 +76,12 @@ public class ShareQrCodeDialogFragment extends SherlockDialogFragment {
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         final Activity activity = getActivity();
 
-        String content = getArguments().getString(ARG_CONTENT);
+        Uri dataUri = getArguments().getParcelable(ARG_URI);
-        mContentList = splitString(content, 1000);
+        boolean fingerprintOnly = getArguments().getBoolean(ARG_FINGERPRINT_ONLY);
 
         AlertDialog.Builder alert = new AlertDialog.Builder(activity);
 
-        alert.setTitle(R.string.menu_share_qr_code);
+        alert.setTitle(R.string.share_qr_code_dialog_title);
 
         LayoutInflater inflater = activity.getLayoutInflater();
         View view = inflater.inflate(R.layout.share_qr_code_dialog, null);
@@ -83,14 +90,45 @@ public class ShareQrCodeDialogFragment extends SherlockDialogFragment {
         mImage = (ImageView) view.findViewById(R.id.share_qr_code_dialog_image);
         mText = (TextView) view.findViewById(R.id.share_qr_code_dialog_text);
 
-        // start with first
+        // TODO
-        mCounter = 0;
+        long masterKeyId = ProviderHelper.getMasterKeyId(getActivity(), dataUri);
-        updateQrCode();
+
+        String content = null;
+        if (fingerprintOnly) {
+            content = "openpgp4fpr:";
+
+            String fingerprint = PgpKeyHelper.convertKeyToHex(masterKeyId);
+
+            mText.setText(getString(R.string.share_qr_code_dialog_fingerprint_text) + " "
+                    + fingerprint);
+
+            content = content + fingerprint;
+
+            Log.d(Constants.TAG, "content: " + content);
+
+            alert.setPositiveButton(R.string.btn_okay, null);
+        } else {
+            mText.setText(R.string.share_qr_code_dialog_start);
+
+            // get public keyring as ascii armored string
+            ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(
+                    getActivity(), dataUri, new long[] { masterKeyId });
+
+            // TODO: binary?
+
+            content = keyringArmored.get(0);
 
             // OnClickListener are set in onResume to prevent automatic dismissing of Dialogs
             // http://stackoverflow.com/questions/2620444/how-to-prevent-a-dialog-from-closing-when-a-button-is-clicked
             alert.setPositiveButton(R.string.btn_next, null);
             alert.setNegativeButton(android.R.string.cancel, null);
+        }
+
+        mContentList = splitString(content, 1000);
+
+        // start with first
+        mCounter = 0;
+        updateQrCode();
 
         return alert.create();
     }