diff -r cd41ebc93e78 -r 41c9aa696059 app/src/main/java/com/isode/stroke/stringcodecs/HMACSHA1.java
--- a/app/src/main/java/com/isode/stroke/stringcodecs/HMACSHA1.java	Sun Mar 15 21:08:23 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2010, Isode Limited, London, England.
- * All rights reserved.
- */
-/*
- * Copyright (c) 2010, Remko Tronçon.
- * All rights reserved.
- */
-package com.isode.stroke.stringcodecs;
-
-import com.isode.stroke.base.ByteArray;
-
-public class HMACSHA1 {
-
-    private static final int B = 64;
-
-    public static ByteArray getResult(ByteArray key, ByteArray data) {
-        assert key.getSize() <= B;
-
-        /* And an assert that does something */
-        if (key.getSize() > B) {
-            throw new IllegalStateException("Invalid key size.");
-        }
-
-        // Create the padded key
-        ByteArray paddedKey = new ByteArray(key);
-        for (int i = key.getSize(); i < B; ++i) {
-            paddedKey.append((byte) 0x0);
-        }
-
-        // Create the first value
-        ByteArray x = new ByteArray(paddedKey);
-        byte[] xInner = x.getData();
-        for (int i = 0; i < xInner.length; ++i) {
-            xInner[i] ^= 0x36;
-        }
-        x.append(data);
-
-        // Create the second value
-        ByteArray y = new ByteArray(paddedKey);
-        byte[] yInner = y.getData();
-        for (int i = 0; i < yInner.length; ++i) {
-            yInner[i] ^= 0x5c;
-        }
-        y.append(SHA1.getHash(x));
-
-        return SHA1.getHash(y);
-    }
-}