--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/src/main/java/ch/ethz/ssh2/crypto/digest/Digest.java	Thu Dec 03 11:23:55 2015 -0800
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
+ * Please refer to the LICENSE.txt for licensing details.
+ */
+package ch.ethz.ssh2.crypto.digest;
+
+import java.security.DigestException;
+
+/**
+ * Digest.
+ *
+ * @author Christian Plattner
+ * @version 2.50, 03/15/10
+ */
+public interface Digest {
+    public int getDigestLength();
+
+    public void update(byte b);
+
+    public void update(byte[] b);
+
+    public void update(byte b[], int off, int len);
+
+    public void reset();
+
+    public void digest(byte[] out) throws DigestException;
+
+    public void digest(byte[] out, int off) throws DigestException;
+}