Android HMAC-SHA1 Different than Standard Java HMAC-SHA1 http://stackoverflow.com/questions/7047487/android-hmac-sha1-different-than-standard-java-hmac-sha1

gistfile1.java

       String base_string = "This is a test string";
        String key = "testKey";
        try {
            Mac mac = Mac.getInstance("HmacSHA1");
            SecretKeySpec secret = new SecretKeySpec(key.getBytes("UTF-8"), mac.getAlgorithm());
            mac.init(secret);
            byte[] digest = mac.doFinal(base_string.getBytes());

            String enc = new String(digest);

            // Base 64 Encode the results
            String retVal = Base64.encodeBase64String(enc.getBytes());
            Log.v(TAG, "String: " + base_string);
            Log.v(TAG, "key: " + key);
            Log.v(TAG, "result: " + retVal);
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }