Modify IdenticonBase to use Briar's hashing and to use byte[] instead of String

briar-android/src/im/delight/android/identicons/IdenticonDrawable.java

@@ -7,6 +7,8 @@ import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.util.Log;
 
+import org.briarproject.api.crypto.CryptoComponent;
+
 /**
  * Created by saiimons on 05/10/14.
  */
@@ -15,9 +17,14 @@ public class IdenticonDrawable extends Drawable {
 
     private static final int CENTER_COLUMN_INDEX = 3;
 
-    public IdenticonDrawable(String toShow) {
+    public IdenticonDrawable(final CryptoComponent crypto, byte[] toShow) {
         super();
         mDelegate = new IdenticonBase() {
+            @Override
+            protected CryptoComponent getCrypto() {
+                return crypto;
+            }
+
             @Override
             protected int getRowCount() {
                 return 5;