do a TON of UI work

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedUserAttribute.java

@@ -114,6 +114,15 @@ public class WrappedUserAttribute implements Serializable {
 
     }
 
+    public byte[][] getSubpackets() {
+        UserAttributeSubpacket[] subpackets = mVector.toSubpacketArray();
+        byte[][] ret = new byte[subpackets.length][];
+        for (int i = 0; i < subpackets.length; i++) {
+            ret[i] = subpackets[i].getData();
+        }
+        return ret;
+    }
+
     private void readObjectNoData() throws ObjectStreamException {
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedCookieResource.java

@@ -19,27 +19,10 @@ import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-public abstract class LinkedCookieResource {
+public abstract class LinkedCookieResource extends LinkedResource {
-
-    protected final URI mSubUri;
-    protected final Set<String> mFlags;
-    protected final HashMap<String,String> mParams;
-
-    static Pattern magicPattern =
-            Pattern.compile("\\[Verifying my PGP key: openpgp4fpr:([a-zA-Z0-9]+)#([a-zA-Z0-9]+)\\]");
 
     protected LinkedCookieResource(Set<String> flags, HashMap<String, String> params, URI uri) {
-        mFlags = flags;
+        super(flags, params, uri);
-        mParams = params;
-        mSubUri = uri;
-    }
-
-    public Set<String> getFlags () {
-        return new HashSet<String>(mFlags);
-    }
-
-    public HashMap<String,String> getParams () {
-        return new HashMap<String,String>(mParams);
     }
 
     public URI toUri () {
@@ -82,10 +65,10 @@ public abstract class LinkedCookieResource {
         return mSubUri;
     }
 
-    public static String generate (Context context, byte[] fingerprint, String nonce) {
+    public static String generate (Context context, byte[] fingerprint, int nonce) {
 
         return "[Verifying my PGP key: openpgp4fpr:"
-                + KeyFormattingUtils.convertFingerprintToHex(fingerprint) + "#" + nonce + "]";
+                + KeyFormattingUtils.convertFingerprintToHex(fingerprint) + "#" + Integer.toHexString(nonce) + "]";
 
     }
 
@@ -129,7 +112,17 @@ public abstract class LinkedCookieResource {
         }
 
         String candidateFp = match.group(1).toLowerCase();
-        int nonceCandidate = Integer.parseInt(match.group(2).toLowerCase(), 16);
+        try {
+            int nonceCandidate = Integer.parseInt(match.group(2).toLowerCase(), 16);
+
+            if (nonce != nonceCandidate) {
+                log.add(LogType.MSG_LV_NONCE_ERROR, indent);
+                return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
+            }
+        } catch (NumberFormatException e) {
+            log.add(LogType.MSG_LV_NONCE_ERROR, indent);
+            return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
+        }
 
         String fp = KeyFormattingUtils.convertFingerprintToHex(fingerprint);
 
@@ -139,72 +132,9 @@ public abstract class LinkedCookieResource {
         }
         log.add(LogType.MSG_LV_FP_OK, indent);
 
-        if (nonce != nonceCandidate) {
-            log.add(LogType.MSG_LV_NONCE_ERROR, indent);
-            return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
-        }
-
         log.add(LogType.MSG_LV_NONCE_OK, indent);
         return new LinkedVerifyResult(LinkedVerifyResult.RESULT_OK, log);
 
     }
 
-    protected static LinkedCookieResource fromRawLinkedId (RawLinkedIdentity id) {
-        return fromUri(id.mNonce, id.mUri);
-    }
-
-    protected static LinkedCookieResource fromUri (int nonce, URI uri) {
-
-        if ("pgpid".equals(uri.getScheme())) {
-            Log.e(Constants.TAG, "unknown uri scheme in (suspected) linked id packet");
-            return null;
-        }
-
-        if (!uri.isOpaque()) {
-            Log.e(Constants.TAG, "non-opaque uri in (suspected) linked id packet");
-            return null;
-        }
-
-        String specific = uri.getSchemeSpecificPart();
-        if (!specific.contains("@")) {
-            Log.e(Constants.TAG, "unknown uri scheme in linked id packet");
-            return null;
-        }
-
-        String[] pieces = specific.split("@", 2);
-        URI subUri = URI.create(pieces[1]);
-
-        Set<String> flags = new HashSet<String>();
-        HashMap<String,String> params = new HashMap<String,String>();
-        {
-            String[] rawParams = pieces[0].split(";");
-            for (String param : rawParams) {
-                String[] p = param.split("=", 2);
-                if (p.length == 1) {
-                    flags.add(param);
-                } else {
-                    params.put(p[0], p[1]);
-                }
-            }
-        }
-
-        return findResourceType(nonce, flags, params, subUri);
-
-    }
-
-    protected static LinkedCookieResource findResourceType (int nonce, Set<String> flags,
-                                                            HashMap<String,String> params,
-                                                            URI  subUri) {
-
-        LinkedCookieResource res;
-
-        res = GenericHttpsResource.create(flags, params, subUri);
-        if (res != null) {
-            return res;
-        }
-
-        return new UnknownResource(flags, params, subUri);
-
-    }
-
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedIdentity.java

@@ -0,0 +1,75 @@
+package org.sufficientlysecure.keychain.pgp.linked;
+
+import org.spongycastle.bcpg.UserAttributeSubpacket;
+import org.spongycastle.util.Strings;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+public class LinkedIdentity extends RawLinkedIdentity {
+
+    public final LinkedResource mResource;
+
+    protected LinkedIdentity(int nonce, URI uri, LinkedResource resource) {
+        super(nonce, uri);
+        if (resource == null) {
+            throw new AssertionError("resource must not be null in a LinkedIdentity!");
+        }
+        mResource = resource;
+    }
+
+    public static RawLinkedIdentity fromAttributeData(byte[] data) throws IOException {
+        WrappedUserAttribute att = WrappedUserAttribute.fromData(data);
+
+        byte[][] subpackets = att.getSubpackets();
+        if (subpackets.length >= 1) {
+            return fromSubpacketData(subpackets[0]);
+        }
+
+        throw new IOException("no subpacket data");
+    }
+
+    /** This method parses a linked id from a UserAttributeSubpacket, or returns null if the
+     * subpacket can not be parsed as a valid linked id.
+     */
+    static RawLinkedIdentity fromAttributeSubpacket(UserAttributeSubpacket subpacket) {
+        if (subpacket.getType() != 100) {
+            return null;
+        }
+
+        byte[] data = subpacket.getData();
+
+        return fromSubpacketData(data);
+
+    }
+
+    static RawLinkedIdentity fromSubpacketData(byte[] data) {
+
+        try {
+            int nonce = ByteBuffer.wrap(data).getInt();
+            String uriStr = Strings.fromUTF8ByteArray(Arrays.copyOfRange(data, 4, data.length));
+            URI uri = URI.create(uriStr);
+
+            LinkedResource res = LinkedResource.fromUri(uri);
+            if (res == null) {
+                return new RawLinkedIdentity(nonce, uri);
+            }
+
+            return new LinkedIdentity(nonce, uri, res);
+
+        } catch (IllegalArgumentException e) {
+            Log.e(Constants.TAG, "error parsing uri in (suspected) linked id packet");
+            return null;
+        }
+    }
+
+    public static RawLinkedIdentity fromResource (LinkedCookieResource res, int nonce) {
+        return new RawLinkedIdentity(nonce, res.toUri());
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedResource.java

@@ -0,0 +1,101 @@
+package org.sufficientlysecure.keychain.pgp.linked;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
+import org.sufficientlysecure.keychain.pgp.linked.resources.GenericHttpsResource;
+import org.sufficientlysecure.keychain.pgp.linked.resources.UnknownResource;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.net.URI;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+public abstract class LinkedResource {
+
+    protected final URI mSubUri;
+    protected final Set<String> mFlags;
+    protected final HashMap<String,String> mParams;
+
+    static Pattern magicPattern =
+            Pattern.compile("\\[Verifying my PGP key: openpgp4fpr:([a-zA-Z0-9]+)#([a-zA-Z0-9]+)\\]");
+
+    protected LinkedResource(Set<String> flags, HashMap<String, String> params, URI uri) {
+        mFlags = flags;
+        mParams = params;
+        mSubUri = uri;
+    }
+
+    public abstract URI toUri();
+
+    public Set<String> getFlags () {
+        return new HashSet<>(mFlags);
+    }
+
+    public HashMap<String,String> getParams () {
+        return new HashMap<>(mParams);
+    }
+
+    protected static LinkedCookieResource fromUri (URI uri) {
+
+        if ("pgpid+cookie".equals(uri.getScheme())) {
+            Log.e(Constants.TAG, "unknown uri scheme in (suspected) linked id packet");
+            return null;
+        }
+
+        if (!uri.isOpaque()) {
+            Log.e(Constants.TAG, "non-opaque uri in (suspected) linked id packet");
+            return null;
+        }
+
+        String specific = uri.getSchemeSpecificPart();
+        if (!specific.contains("@")) {
+            Log.e(Constants.TAG, "unknown uri scheme in linked id packet");
+            return null;
+        }
+
+        String[] pieces = specific.split("@", 2);
+        URI subUri = URI.create(pieces[1]);
+
+        Set<String> flags = new HashSet<String>();
+        HashMap<String,String> params = new HashMap<String,String>();
+        {
+            String[] rawParams = pieces[0].split(";");
+            for (String param : rawParams) {
+                String[] p = param.split("=", 2);
+                if ("".equals(p[0])) {
+                    continue;
+                }
+                if (p.length == 1) {
+                    flags.add(param);
+                } else {
+                    params.put(p[0], p[1]);
+                }
+            }
+        }
+
+        return findResourceType(flags, params, subUri);
+
+    }
+
+    protected static LinkedCookieResource findResourceType (Set<String> flags,
+                                                            HashMap<String,String> params,
+                                                            URI  subUri) {
+
+        LinkedCookieResource res;
+
+        res = GenericHttpsResource.create(flags, params, subUri);
+        if (res != null) {
+            return res;
+        }
+        res = DnsResource.create(flags, params, subUri);
+        if (res != null) {
+            return res;
+        }
+
+        return null;
+
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/RawLinkedIdentity.java

@@ -1,18 +1,10 @@
 package org.sufficientlysecure.keychain.pgp.linked;
 
-import org.spongycastle.bcpg.UserAttributeSubpacket;
 import org.spongycastle.util.Strings;
-import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
-import org.sufficientlysecure.keychain.util.Log;
 
 import java.net.URI;
 import java.nio.ByteBuffer;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map.Entry;
-import java.util.Set;
 
 /** The RawLinkedIdentity contains raw parsed data from a Linked Identity subpacket. */
 public class RawLinkedIdentity {
@@ -36,50 +28,18 @@ public class RawLinkedIdentity {
         return buf.array();
     }
 
-    /** This method parses a linked id from a UserAttributeSubpacket, or returns null if the
-     * subpacket can not be parsed as a valid linked id.
-     */
-    static RawLinkedIdentity fromAttributeSubpacket(UserAttributeSubpacket subpacket) {
-        if (subpacket.getType() != 100) {
-            return null;
-        }
-
-        byte[] data = subpacket.getData();
-
-        return fromSubpacketData(data);
-
-    }
-
-    public static RawLinkedIdentity fromSubpacketData(byte[] data) {
-
-        try {
-            int nonce = ByteBuffer.wrap(data).getInt();
-            String uri = Strings.fromUTF8ByteArray(Arrays.copyOfRange(data, 4, data.length));
-
-            return new RawLinkedIdentity(nonce, URI.create(uri));
-
-        } catch (IllegalArgumentException e) {
-            Log.e(Constants.TAG, "error parsing uri in (suspected) linked id packet");
-            return null;
-        }
-    }
-
-    public static RawLinkedIdentity fromResource (LinkedCookieResource res, int nonce) {
-        return new RawLinkedIdentity(nonce, res.toUri());
-    }
-
     public WrappedUserAttribute toUserAttribute () {
         return WrappedUserAttribute.fromSubpacket(WrappedUserAttribute.UAT_LINKED_ID, getEncoded());
     }
 
-    public static String generateNonce() {
+    public static int generateNonce() {
         // TODO make this actually random
         // byte[] data = new byte[4];
         // new SecureRandom().nextBytes(data);
         // return Hex.toHexString(data);
 
         // debug for now
-        return "01234567";
+        return 1234567;
     }
 
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/DnsResource.java

@@ -39,10 +39,11 @@ public class DnsResource extends LinkedCookieResource {
         mType = type;
     }
 
-    public static String generateText (Context context, byte[] fingerprint, String nonce) {
+    public static String generateText (Context context, byte[] fingerprint, int nonce) {
 
         return "pgpid+cookie="
-                + KeyFormattingUtils.convertFingerprintToHex(fingerprint) + ";" + nonce + "";
+                + KeyFormattingUtils.convertFingerprintToHex(fingerprint) + ";"
+                + Integer.toHexString(nonce) + "";
 
     }
 
@@ -81,6 +82,10 @@ public class DnsResource extends LinkedCookieResource {
         return new DnsResource(flags, params, uri, fqdn, clazz, type);
     }
 
+    public String getFqdn() {
+        return mFqdn;
+    }
+
     @Override
     protected String fetchResource (OperationLog log, int indent) {
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/GenericHttpsResource.java

@@ -28,7 +28,7 @@ public class GenericHttpsResource extends LinkedCookieResource {
         super(flags, params, uri);
     }
 
-    public static String generateText (Context context, byte[] fingerprint, String nonce) {
+    public static String generateText (Context context, byte[] fingerprint, int nonce) {
         String cookie = LinkedCookieResource.generate(context, fingerprint, nonce);
 
         return String.format(context.getResources().getString(R.string.linked_id_generic_text),

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/TwitterResource.java

@@ -35,7 +35,7 @@ public class TwitterResource extends LinkedCookieResource {
         super(flags, params, uri);
     }
 
-    public static String generateText (Context context, byte[] fingerprint, String nonce) {
+    public static String generateText (Context context, byte[] fingerprint, int nonce) {
         // nothing special here for now, might change this later
         return LinkedCookieResource.generate(context, fingerprint, nonce);
     }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/KeychainDatabase.java

@@ -53,7 +53,7 @@ import java.io.IOException;
  */
 public class KeychainDatabase extends SQLiteOpenHelper {
     private static final String DATABASE_NAME = "openkeychain.db";
-    private static final int DATABASE_VERSION = 8;
+    private static final int DATABASE_VERSION = 9;
     static Boolean apgHack = false;
     private Context mContext;
 
@@ -61,7 +61,7 @@ public class KeychainDatabase extends SQLiteOpenHelper {
         String KEY_RINGS_PUBLIC = "keyrings_public";
         String KEY_RINGS_SECRET = "keyrings_secret";
         String KEYS = "keys";
-        String USER_PACKETS = "user_ids";
+        String USER_PACKETS = "user_packets";
         String CERTS = "certs";
         String API_APPS = "api_apps";
         String API_ACCOUNTS = "api_accounts";
@@ -119,8 +119,7 @@ public class KeychainDatabase extends SQLiteOpenHelper {
                 + UserPacketsColumns.IS_REVOKED + " INTEGER, "
                 + UserPacketsColumns.RANK+ " INTEGER, "
 
-                + "PRIMARY KEY(" + UserPacketsColumns.MASTER_KEY_ID + ", " + UserPacketsColumns.USER_ID + "), "
+                + "PRIMARY KEY(" + UserPacketsColumns.MASTER_KEY_ID + ", " + UserPacketsColumns.RANK + "), "
-                + "UNIQUE (" + UserPacketsColumns.MASTER_KEY_ID + ", " + UserPacketsColumns.RANK + "), "
                 + "FOREIGN KEY(" + UserPacketsColumns.MASTER_KEY_ID + ") REFERENCES "
                     + Tables.KEY_RINGS_PUBLIC + "(" + KeyRingsColumns.MASTER_KEY_ID + ") ON DELETE CASCADE"
             + ")";
@@ -267,6 +266,13 @@ public class KeychainDatabase extends SQLiteOpenHelper {
                 } catch (Exception e) {
                     // never mind, the column probably already existed
                 }
+            case 9:
+                // tbale name for user_ids changed to user_packets
+                db.execSQL("DROP TABLE IF EXISTS certs");
+                db.execSQL("DROP TABLE IF EXISTS user_ids");
+                db.execSQL(CREATE_USER_PACKETS);
+                db.execSQL(CREATE_CERTS);
+
         }
 
         // always do consolidate after upgrade

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/KeychainProvider.java

@@ -62,6 +62,7 @@ public class KeychainProvider extends ContentProvider {
     private static final int KEY_RING_SECRET = 204;
     private static final int KEY_RING_CERTS = 205;
     private static final int KEY_RING_CERTS_SPECIFIC = 206;
+    private static final int KEY_RING_LINKED_IDS = 207;
 
     private static final int API_APPS = 301;
     private static final int API_APPS_BY_PACKAGE_NAME = 302;
@@ -127,6 +128,7 @@ public class KeychainProvider extends ContentProvider {
          * key_rings/_/unified
          * key_rings/_/keys
          * key_rings/_/user_ids
+         * key_rings/_/linked_ids
          * key_rings/_/public
          * key_rings/_/secret
          * key_rings/_/certs
@@ -142,6 +144,9 @@ public class KeychainProvider extends ContentProvider {
         matcher.addURI(authority, KeychainContract.BASE_KEY_RINGS + "/*/"
                 + KeychainContract.PATH_USER_IDS,
                 KEY_RING_USER_IDS);
+        matcher.addURI(authority, KeychainContract.BASE_KEY_RINGS + "/*/"
+                        + KeychainContract.PATH_LINKED_IDS,
+                KEY_RING_LINKED_IDS);
         matcher.addURI(authority, KeychainContract.BASE_KEY_RINGS + "/*/"
                 + KeychainContract.PATH_PUBLIC,
                 KEY_RING_PUBLIC);
@@ -469,7 +474,8 @@ public class KeychainProvider extends ContentProvider {
             }
 
             case KEY_RINGS_USER_IDS:
-            case KEY_RING_USER_IDS: {
+            case KEY_RING_USER_IDS:
+            case KEY_RING_LINKED_IDS: {
                 HashMap<String, String> projectionMap = new HashMap<>();
                 projectionMap.put(UserPackets._ID, Tables.USER_PACKETS + ".oid AS _id");
                 projectionMap.put(UserPackets.MASTER_KEY_ID, Tables.USER_PACKETS + "." + UserPackets.MASTER_KEY_ID);
@@ -494,13 +500,14 @@ public class KeychainProvider extends ContentProvider {
                 groupBy = Tables.USER_PACKETS + "." + UserPackets.MASTER_KEY_ID
                         + ", " + Tables.USER_PACKETS + "." + UserPackets.RANK;
 
-                // for now, we only respect user ids here, so TYPE must be NULL
+                if (match == KEY_RING_LINKED_IDS) {
-                // TODO expand with KEY_RING_USER_PACKETS query type which lifts this restriction
+                    qb.appendWhere(Tables.USER_PACKETS + "." + UserPackets.TYPE + " = 100");
-                qb.appendWhere(Tables.USER_PACKETS + "." + UserPackets.TYPE + " IS NULL");
+                } else {
+                    qb.appendWhere(Tables.USER_PACKETS + "." + UserPackets.TYPE + " IS NULL");
+                }
 
                 // If we are searching for a particular keyring's ids, add where
-                if (match == KEY_RING_USER_IDS) {
+                if (match == KEY_RING_USER_IDS || match == KEY_RING_LINKED_IDS) {
-                    // TODO remove with the thing above
                     qb.appendWhere(" AND ");
                     qb.appendWhere(Tables.USER_PACKETS + "." + UserPackets.MASTER_KEY_ID + " = ");
                     qb.appendWhereEscapeString(uri.getPathSegments().get(1));

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/ProviderHelper.java

@@ -1082,9 +1082,8 @@ public class ProviderHelper {
             log.add(LogType.MSG_CON_SAVE_SECRET, indent);
             indent += 1;
 
-            final Cursor cursor = mContentResolver.query(KeyRings.buildUnifiedKeyRingsUri(), new String[]{
+            final Cursor cursor = mContentResolver.query(KeyRingData.buildSecretKeyRingUri(),
-                    KeyRings.PRIVKEY_DATA, KeyRings.FINGERPRINT, KeyRings.HAS_ANY_SECRET
+                    new String[]{ KeyRingData.KEY_RING_DATA }, null, null, null);
-            }, KeyRings.HAS_ANY_SECRET + " = 1", null, null);
 
             if (cursor == null) {
                 log.add(LogType.MSG_CON_ERROR_DB, indent);
@@ -1106,8 +1105,7 @@ public class ProviderHelper {
                     if (cursor.isAfterLast()) {
                         return false;
                     }
-                    ring = new ParcelableKeyRing(KeyFormattingUtils.convertFingerprintToHex(cursor.getBlob(1)), cursor.getBlob(0)
+                    ring = new ParcelableKeyRing(cursor.getBlob(0));
-                    );
                     cursor.moveToNext();
                     return true;
                 }
@@ -1144,9 +1142,9 @@ public class ProviderHelper {
             log.add(LogType.MSG_CON_SAVE_PUBLIC, indent);
             indent += 1;
 
-            final Cursor cursor = mContentResolver.query(KeyRings.buildUnifiedKeyRingsUri(), new String[]{
+            final Cursor cursor = mContentResolver.query(
-                    KeyRings.PUBKEY_DATA, KeyRings.FINGERPRINT
+                    KeyRingData.buildPublicKeyRingUri(),
-            }, null, null, null);
+                    new String[]{ KeyRingData.KEY_RING_DATA }, null, null, null);
 
             if (cursor == null) {
                 log.add(LogType.MSG_CON_ERROR_DB, indent);
@@ -1168,8 +1166,7 @@ public class ProviderHelper {
                     if (cursor.isAfterLast()) {
                         return false;
                     }
-                    ring = new ParcelableKeyRing(KeyFormattingUtils.convertFingerprintToHex(cursor.getBlob(1)), cursor.getBlob(0)
+                    ring = new ParcelableKeyRing(cursor.getBlob(0));
-                    );
                     cursor.moveToNext();
                     return true;
                 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java

@@ -281,7 +281,7 @@ public class ViewKeyActivity extends BaseActivity implements
         // Add the fragment to the 'fragment_container' FrameLayout
         // NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
         getSupportFragmentManager().beginTransaction()
-                .replace(R.id.view_key_fragment, frag)
+                .replace(R.id.view_key_fragment, frag, "main")
                 .commitAllowingStateLoss();
         // do it immediately!
         getSupportFragmentManager().executePendingTransactions();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyFragment.java

@@ -20,15 +20,22 @@ package org.sufficientlysecure.keychain.ui;
 
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.support.v4.app.LoaderManager;
 import android.support.v4.content.CursorLoader;
 import android.support.v4.content.Loader;
 import android.support.v7.widget.CardView;
+import android.transition.Explode;
+import android.transition.Fade;
+import android.transition.Transition;
+import android.transition.TransitionInflater;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 
 import org.sufficientlysecure.keychain.Constants;
@@ -91,11 +98,34 @@ public class ViewKeyFragment extends LoaderFragment implements
                 showUserIdInfo(position);
             }
         });
-        mLinkedIdsCard.setVisibility(View.GONE);
+        mLinkedIds.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                showLinkedId(position);
+            }
+        });
 
         return root;
     }
 
+    private void showLinkedId(final int position) {
+        Fragment frag = mLinkedIdsAdapter.getLinkedIdFragment(position);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            Transition trans = TransitionInflater.from(getActivity())
+                            .inflateTransition(R.transition.linked_id_card_trans);
+            // setSharedElementReturnTransition(trans);
+            setExitTransition(new Fade());
+            frag.setSharedElementEnterTransition(trans);
+        }
+
+        getFragmentManager().beginTransaction()
+                .replace(R.id.view_key_fragment, frag)
+                .addSharedElement(mLinkedIdsCard, "card_linked_ids")
+                .addToBackStack(null)
+                .commit();
+    }
+
     private void showUserIdInfo(final int position) {
         if (!mIsSecret) {
             final boolean isRevoked = mUserIdsAdapter.getIsRevoked(position);
@@ -140,10 +170,8 @@ public class ViewKeyFragment extends LoaderFragment implements
 
         Log.i(Constants.TAG, "mDataUri: " + mDataUri);
 
-        // Prepare the loaders. Either re-connect with an existing ones,
-        // or start new ones.
-        // TODO Is this loader the same as the one in the activity?
         getLoaderManager().initLoader(LOADER_ID_UNIFIED, null, this);
+        getLoaderManager().initLoader(LOADER_ID_LINKED_IDS, null, this);
     }
 
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/LinkedIdsAdapter.java

@@ -21,24 +21,35 @@ package org.sufficientlysecure.keychain.ui.adapter;
 import android.app.Activity;
 import android.content.Context;
 import android.database.Cursor;
-import android.graphics.Typeface;
 import android.net.Uri;
+import android.support.v4.app.Fragment;
 import android.support.v4.content.CursorLoader;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
-import org.sufficientlysecure.keychain.pgp.KeyRing;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedResource;
 import org.sufficientlysecure.keychain.pgp.linked.RawLinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
 import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
 import org.sufficientlysecure.keychain.provider.KeychainContract.UserPackets;
+import org.sufficientlysecure.keychain.ui.ViewKeyFragment;
+import org.sufficientlysecure.keychain.ui.linked.LinkedIdViewFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 
+import java.io.IOException;
+import java.util.WeakHashMap;
+
+
 public class LinkedIdsAdapter extends UserAttributesAdapter {
     protected LayoutInflater mInflater;
+    WeakHashMap<Integer,RawLinkedIdentity> mLinkedIdentityCache = new WeakHashMap<>();
 
     public LinkedIdsAdapter(Context context, Cursor c, int flags) {
         super(context, c, flags);
@@ -46,104 +57,92 @@ public class LinkedIdsAdapter extends UserAttributesAdapter {
     }
 
     @Override
-    public int getItemViewType(int position) {
+    public void bindView(View view, Context context, Cursor cursor) {
-        RawLinkedIdentity id = (RawLinkedIdentity) getItem(position);
 
-        // TODO return different ids by type
+        RawLinkedIdentity id = getItem(cursor.getPosition());
+        ViewHolder holder = (ViewHolder) view.getTag();
+
+        int isVerified = cursor.getInt(INDEX_VERIFIED);
+        switch (isVerified) {
+            case Certs.VERIFIED_SECRET:
+                KeyFormattingUtils.setStatusImage(mContext, holder.vVerified,
+                        null, KeyFormattingUtils.STATE_VERIFIED, KeyFormattingUtils.DEFAULT_COLOR);
+                break;
+            case Certs.VERIFIED_SELF:
+                KeyFormattingUtils.setStatusImage(mContext, holder.vVerified,
+                        null, KeyFormattingUtils.STATE_UNVERIFIED, KeyFormattingUtils.DEFAULT_COLOR);
+                break;
+            default:
+                KeyFormattingUtils.setStatusImage(mContext, holder.vVerified,
+                        null, KeyFormattingUtils.STATE_INVALID, KeyFormattingUtils.DEFAULT_COLOR);
+                break;
+        }
+
+        if (holder instanceof ViewHolderNonRaw) {
+            ((ViewHolderNonRaw) holder).setData(mContext, (LinkedIdentity) id);
+        }
+
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        RawLinkedIdentity id = getItem(position);
+
+        if (id instanceof LinkedIdentity) {
+            LinkedResource res = ((LinkedIdentity) id).mResource;
+            if (res instanceof DnsResource) {
+                return 1;
+            }
+        }
 
         return 0;
     }
 
     @Override
     public int getViewTypeCount() {
-        return 1;
+        return 2;
     }
 
     @Override
-    public Object getItem(int position) {
+    public RawLinkedIdentity getItem(int position) {
+        RawLinkedIdentity ret = mLinkedIdentityCache.get(position);
+        if (ret != null) {
+            return ret;
+        }
+
         Cursor c = getCursor();
         c.moveToPosition(position);
 
         byte[] data = c.getBlob(INDEX_ATTRIBUTE_DATA);
-        RawLinkedIdentity identity = RawLinkedIdentity.fromSubpacketData(data);
+        try {
-
+            ret = LinkedIdentity.fromAttributeData(data);
-        return identity;
+            mLinkedIdentityCache.put(position, ret);
-    }
+            return ret;
-
+        } catch (IOException e) {
-    @Override
+            Log.e(Constants.TAG, "could not read linked identity subpacket data", e);
-    public void bindView(View view, Context context, Cursor cursor) {
+            return null;
-        TextView vName = (TextView) view.findViewById(R.id.user_id_item_name);
-        TextView vAddress = (TextView) view.findViewById(R.id.user_id_item_address);
-        TextView vComment = (TextView) view.findViewById(R.id.user_id_item_comment);
-        ImageView vVerified = (ImageView) view.findViewById(R.id.user_id_item_certified);
-        View vVerifiedLayout = view.findViewById(R.id.user_id_item_certified_layout);
-        ImageView vEditImage = (ImageView) view.findViewById(R.id.user_id_item_edit_image);
-        ImageView vDeleteButton = (ImageView) view.findViewById(R.id.user_id_item_delete_button);
-        vDeleteButton.setVisibility(View.GONE); // not used
-
-        String userId = cursor.getString(INDEX_USER_ID);
-        String[] splitUserId = KeyRing.splitUserId(userId);
-        if (splitUserId[0] != null) {
-            vName.setText(splitUserId[0]);
-        } else {
-            vName.setText(R.string.user_id_no_name);
-        }
-        if (splitUserId[1] != null) {
-            vAddress.setText(splitUserId[1]);
-            vAddress.setVisibility(View.VISIBLE);
-        } else {
-            vAddress.setVisibility(View.GONE);
-        }
-        if (splitUserId[2] != null) {
-            vComment.setText(splitUserId[2]);
-            vComment.setVisibility(View.VISIBLE);
-        } else {
-            vComment.setVisibility(View.GONE);
-        }
-
-        boolean isPrimary = cursor.getInt(INDEX_IS_PRIMARY) != 0;
-        boolean isRevoked = cursor.getInt(INDEX_IS_REVOKED) > 0;
-        vVerifiedLayout.setVisibility(View.VISIBLE);
-
-        if (isRevoked) {
-            // set revocation icon (can this even be primary?)
-            KeyFormattingUtils.setStatusImage(mContext, vVerified, null, KeyFormattingUtils.STATE_REVOKED, R.color.bg_gray);
-
-            // disable revoked user ids
-            vName.setEnabled(false);
-            vAddress.setEnabled(false);
-            vComment.setEnabled(false);
-        } else {
-            vName.setEnabled(true);
-            vAddress.setEnabled(true);
-            vComment.setEnabled(true);
-
-            if (isPrimary) {
-                vName.setTypeface(null, Typeface.BOLD);
-                vAddress.setTypeface(null, Typeface.BOLD);
-            } else {
-                vName.setTypeface(null, Typeface.NORMAL);
-                vAddress.setTypeface(null, Typeface.NORMAL);
-            }
-
-            int isVerified = cursor.getInt(INDEX_VERIFIED);
-            switch (isVerified) {
-                case Certs.VERIFIED_SECRET:
-                    KeyFormattingUtils.setStatusImage(mContext, vVerified, null, KeyFormattingUtils.STATE_VERIFIED, KeyFormattingUtils.DEFAULT_COLOR);
-                    break;
-                case Certs.VERIFIED_SELF:
-                    KeyFormattingUtils.setStatusImage(mContext, vVerified, null, KeyFormattingUtils.STATE_UNVERIFIED, KeyFormattingUtils.DEFAULT_COLOR);
-                    break;
-                default:
-                    KeyFormattingUtils.setStatusImage(mContext, vVerified, null, KeyFormattingUtils.STATE_INVALID, KeyFormattingUtils.DEFAULT_COLOR);
-                    break;
-            }
         }
     }
 
     @Override
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        return mInflater.inflate(R.layout.view_key_adv_user_id_item, null);
+        int type = getItemViewType(cursor.getPosition());
+        switch(type) {
+            case 0: {
+                View v = mInflater.inflate(R.layout.linked_id_item_unknown, null);
+                ViewHolder holder = new ViewHolder(v);
+                v.setTag(holder);
+                return v;
+            }
+            case 1: {
+                View v = mInflater.inflate(R.layout.linked_id_item_dns, null);
+                ViewHolder holder = new ViewHolderDns(v);
+                v.setTag(holder);
+                return v;
+            }
+            default:
+                throw new AssertionError("all cases must be covered in LinkedIdsAdapter.newView!");
+        }
     }
 
     // don't show revoked user ids, irrelevant for average users
@@ -155,4 +154,48 @@ public class LinkedIdsAdapter extends UserAttributesAdapter {
                 UserIdsAdapter.USER_PACKETS_PROJECTION, LINKED_IDS_WHERE, null, null);
     }
 
+    public Fragment getLinkedIdFragment(int position) {
+        RawLinkedIdentity id = getItem(position);
+
+        return LinkedIdViewFragment.newInstance(id);
+    }
+
+    static class ViewHolder {
+        ImageView vVerified;
+
+        ViewHolder(View view) {
+            vVerified = (ImageView) view.findViewById(R.id.user_id_item_certified);
+        }
+    }
+
+    static abstract class ViewHolderNonRaw extends ViewHolder {
+        ViewHolderNonRaw(View view) {
+            super(view);
+        }
+
+        abstract void setData(Context context, LinkedIdentity id);
+    }
+
+    static class ViewHolderDns extends ViewHolderNonRaw {
+        TextView vFqdn;
+
+        ViewHolderDns(View view) {
+            super(view);
+
+            vFqdn = (TextView) view.findViewById(R.id.linked_id_dns_fqdn);
+        }
+
+        @Override
+        void setData(Context context, LinkedIdentity id) {
+            DnsResource res = (DnsResource) id.mResource;
+            vFqdn.setText(res.getFqdn());
+        }
+
+    }
+
+    @Override
+    public void notifyDataSetChanged() {
+        mLinkedIdentityCache.clear();
+        super.notifyDataSetChanged();
+    }
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/UserAttributesAdapter.java

@@ -48,4 +48,5 @@ public abstract class UserAttributesAdapter extends CursorAdapter {
         mCursor.moveToPosition(position);
         return mCursor.getInt(INDEX_VERIFIED);
     }
+
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep1Fragment.java

@@ -73,7 +73,7 @@ public class LinkedIdCreateDnsStep1Fragment extends Fragment {
                     return;
                 }
 
-                String proofNonce = RawLinkedIdentity.generateNonce();
+                int proofNonce = RawLinkedIdentity.generateNonce();
                 String proofText = DnsResource.generateText(getActivity(),
                         mLinkedIdWizard.mFingerprint, proofNonce);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep2Fragment.java

@@ -41,6 +41,7 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.LinkedVerifyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
 import org.sufficientlysecure.keychain.pgp.linked.RawLinkedIdentity;
 import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
@@ -80,13 +81,13 @@ public class LinkedIdCreateDnsStep2Fragment extends Fragment {
      * Creates new instance of this fragment
      */
     public static LinkedIdCreateDnsStep2Fragment newInstance
-            (String uri, String proofNonce, String proofText) {
+            (String uri, int proofNonce, String proofText) {
 
         LinkedIdCreateDnsStep2Fragment frag = new LinkedIdCreateDnsStep2Fragment();
 
         Bundle args = new Bundle();
         args.putString(DOMAIN, uri);
-        args.putString(NONCE, proofNonce);
+        args.putInt(NONCE, proofNonce);
         args.putString(TEXT, proofText);
         frag.setArguments(args);
 
@@ -237,6 +238,7 @@ public class LinkedIdCreateDnsStep2Fragment extends Fragment {
                     mVerifiedResource = resource;
                 } else {
                     setVerifyProgress(false, false);
+                    mVerifiedResource = resource;
                     // on error, show error message
                     result.createNotify(getActivity()).show();
                 }
@@ -308,7 +310,7 @@ public class LinkedIdCreateDnsStep2Fragment extends Fragment {
                 new SaveKeyringParcel(mLinkedIdWizard.mMasterKeyId, mLinkedIdWizard.mFingerprint);
 
         WrappedUserAttribute ua =
-                RawLinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
+                LinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
 
         skp.mAddUserAttribute.add(ua);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep1Fragment.java

@@ -72,7 +72,7 @@ public class LinkedIdCreateHttpsStep1Fragment extends Fragment {
                     return;
                 }
 
-                String proofNonce = RawLinkedIdentity.generateNonce();
+                int proofNonce = RawLinkedIdentity.generateNonce();
                 String proofText = GenericHttpsResource.generateText(getActivity(),
                         mLinkedIdWizard.mFingerprint, proofNonce);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep2Fragment.java

@@ -42,6 +42,7 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.LinkedVerifyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
 import org.sufficientlysecure.keychain.pgp.linked.RawLinkedIdentity;
 import org.sufficientlysecure.keychain.pgp.linked.resources.GenericHttpsResource;
 import org.sufficientlysecure.keychain.service.KeychainIntentService;
@@ -83,13 +84,13 @@ public class LinkedIdCreateHttpsStep2Fragment extends Fragment {
      * Creates new instance of this fragment
      */
     public static LinkedIdCreateHttpsStep2Fragment newInstance
-            (String uri, String proofNonce, String proofText) {
+            (String uri, int proofNonce, String proofText) {
 
         LinkedIdCreateHttpsStep2Fragment frag = new LinkedIdCreateHttpsStep2Fragment();
 
         Bundle args = new Bundle();
         args.putString(URI, uri);
-        args.putString(NONCE, proofNonce);
+        args.putInt(NONCE, proofNonce);
         args.putString(TEXT, proofText);
         frag.setArguments(args);
 
@@ -315,7 +316,7 @@ public class LinkedIdCreateHttpsStep2Fragment extends Fragment {
                 new SaveKeyringParcel(mLinkedIdWizard.mMasterKeyId, mLinkedIdWizard.mFingerprint);
 
         WrappedUserAttribute ua =
-                RawLinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
+                LinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
 
         skp.mAddUserAttribute.add(ua);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep1Fragment.java

@@ -92,7 +92,7 @@ public class LinkedIdCreateTwitterStep1Fragment extends Fragment {
                             return;
                         }
 
-                        String proofNonce = RawLinkedIdentity.generateNonce();
+                        int proofNonce = RawLinkedIdentity.generateNonce();
                         String proofText = TwitterResource.generateText(getActivity(),
                                 mLinkedIdWizard.mFingerprint, proofNonce);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep2Fragment.java

@@ -52,13 +52,13 @@ public class LinkedIdCreateTwitterStep2Fragment extends Fragment {
      * Creates new instance of this fragment
      */
     public static LinkedIdCreateTwitterStep2Fragment newInstance
-            (String handle, String proofNonce, String proofText) {
+            (String handle, int proofNonce, String proofText) {
 
         LinkedIdCreateTwitterStep2Fragment frag = new LinkedIdCreateTwitterStep2Fragment();
 
         Bundle args = new Bundle();
         args.putString(HANDLE, handle);
-        args.putString(NONCE, proofNonce);
+        args.putInt(NONCE, proofNonce);
         args.putString(TEXT, proofText);
         frag.setArguments(args);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdViewFragment.java

@@ -0,0 +1,45 @@
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v7.widget.CardView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.linked.RawLinkedIdentity;
+
+
+public class LinkedIdViewFragment extends Fragment {
+
+    private CardView mLinkedIdsCard;
+
+    public static Fragment newInstance(RawLinkedIdentity id) {
+        LinkedIdViewFragment frag = new LinkedIdViewFragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
+        View root = inflater.inflate(R.layout.linked_id_view_fragment, null);
+
+        mLinkedIdsCard = (CardView) root.findViewById(R.id.card_linked_ids);
+
+        root.findViewById(R.id.back_button).setClickable(true);
+        root.findViewById(R.id.back_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                getFragmentManager().popBackStack();
+            }
+        });
+
+        return root;
+    }
+
+}

OpenKeychain/src/main/res/layout/linked_id_item_dns.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?android:attr/listPreferredItemHeight"
+    android:orientation="horizontal"
+    android:singleLine="true">
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/linked_id_type_icon"
+        android:layout_marginLeft="14dp"
+        android:layout_marginStart="14dp"
+        android:src="@drawable/dns"
+        android:layout_gravity="center_vertical" />
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_gravity="center_vertical"
+        android:layout_width="0dip"
+        android:layout_marginLeft="8dp"
+        android:layout_marginTop="4dp"
+        android:layout_marginBottom="4dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1">
+
+        <TextView
+            android:id="@+id/linked_id_dns_fqdn"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="www.example.com"
+            android:textAppearance="?android:attr/textAppearanceMedium" />
+
+        <TextView
+            android:id="@+id/user_id_item_comment"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="@color/tertiary_text_light"
+            android:text="comment"
+            android:textAppearance="?android:attr/textAppearanceSmall" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/user_id_item_certified_layout"
+        android:layout_width="22dp"
+        android:layout_height="wrap_content"
+        android:layout_marginRight="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_gravity="center_vertical"
+        android:orientation="vertical">
+
+        <ImageView
+            android:id="@+id/user_id_item_certified"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@drawable/status_signature_unverified_cutout_24px"
+            android:layout_gravity="center_horizontal" />
+
+    </LinearLayout>
+
+</LinearLayout>

OpenKeychain/src/main/res/layout/linked_id_item_unknown.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?android:attr/listPreferredItemHeight"
+    android:orientation="horizontal"
+    android:singleLine="true">
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_gravity="center_vertical"
+        android:layout_width="0dip"
+        android:layout_marginLeft="8dp"
+        android:layout_marginTop="4dp"
+        android:layout_marginBottom="4dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1">
+
+        <TextView
+            android:id="@+id/linked_id_uri"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="uri"
+            android:textAppearance="?android:attr/textAppearanceMedium" />
+
+        <TextView
+            android:id="@+id/user_id_item_comment"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="@color/tertiary_text_light"
+            android:text="unknown linked identity type"
+            android:textAppearance="?android:attr/textAppearanceSmall" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/user_id_item_certified_layout"
+        android:layout_width="22dp"
+        android:layout_height="wrap_content"
+        android:layout_marginRight="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_gravity="center_vertical"
+        android:orientation="vertical">
+
+        <ImageView
+            android:id="@+id/user_id_item_certified"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@drawable/status_signature_unverified_cutout_24px"
+            android:layout_gravity="center_horizontal" />
+
+    </LinearLayout>
+
+</LinearLayout>

OpenKeychain/src/main/res/layout/linked_id_view_fragment.xml

@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:card_view="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp">
+
+    <android.support.v7.widget.CardView
+        android:id="@+id/card_linked_ids"
+        android:transitionName="card_linked_ids"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        card_view:cardBackgroundColor="@android:color/white"
+        card_view:cardElevation="2dp"
+        card_view:cardUseCompatPadding="true"
+        card_view:cardCornerRadius="4dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <TextView
+                style="@style/CardViewHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Linked Identity" />
+
+            <LinearLayout
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content">
+
+                <ImageView
+                    android:minHeight="?android:attr/listPreferredItemHeight"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:id="@+id/linked_id_type_icon"
+                    android:layout_marginLeft="14dp"
+                    android:layout_marginStart="14dp"
+                    android:src="@drawable/dns" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="14dp"
+                    android:layout_marginStart="14dp"
+                    android:text="This is a DNS linked identity~\nLorem ipsum\nmore text\neven more text\nyoooyoyo"
+                    android:layout_gravity="center_vertical" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal">
+
+                <ImageView
+                    android:id="@+id/back_button"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/ic_arrow_back_white_24dp"
+                    style="?android:attr/borderlessButtonStyle" />
+
+                <Space
+                    android:layout_width="wrap_content"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1" />
+
+                <Button
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="View"
+                    android:textColor="@color/link_text_material_light"
+                    style="?android:attr/borderlessButtonStyle"
+                    />
+
+                <Button
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Verify"
+                    android:textColor="@color/link_text_material_light"
+                    style="?android:attr/borderlessButtonStyle"
+                    />
+
+            </LinearLayout>
+
+        </LinearLayout>
+
+    </android.support.v7.widget.CardView>
+
+</ScrollView>

OpenKeychain/src/main/res/layout/view_key_fragment.xml

@@ -43,6 +43,7 @@
 
         <android.support.v7.widget.CardView
             android:id="@+id/card_linked_ids"
+            android:transitionName="card_linked_ids"
             android:layout_gravity="center"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

OpenKeychain/src/main/res/transition/linked_id_card_trans.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<transitionSet xmlns:android="http://schemas.android.com/apk/res/android">
+    <changeBounds />
+</transitionSet>