@Test public void testKeccak256() { MAC hmac = HMAC.keccak256(ascii(EMPTY_STRING)); assertArrayEquals( hex("042186ec4e98680a0866091d6fb89b60871134b44327f8f467" + "c14e9841d3e97b"), hmac.digest(ascii(EMPTY_STRING))); hmac = HMAC.keccak256(ascii("key")); assertArrayEquals( hex("74547bc8c8e1ef02aec834ca60ff24cc316d4c2244a360fe17" + "448cb53410bed4"), hmac.digest(ascii(PANGRAM))); }
/** * Creates and returns a {@link MAC} instance corresponding to the given algorithm, initialized * with the provided secret key. * * @param algorithm the MAC algorithm. * @param key the secret key. * @return the created {@link MAC} instance. * @throws NullPointerException if {@code algorithm} is {@code null}. * @throws IllegalArgumentException if the given algorithm is unknown. */ static MAC newMAC(Algorithm<MAC> algorithm, byte[] key) { Parameters.checkNotNull(algorithm); MAC mac; if (algorithm == Algorithm.HMAC_MD2) { mac = HMAC.md2(key); } else if (algorithm == Algorithm.HMAC_MD4) { mac = HMAC.md4(key); } else if (algorithm == Algorithm.HMAC_MD5) { mac = HMAC.md5(key); } else if (algorithm == Algorithm.HMAC_SHA1) { mac = HMAC.sha1(key); } else if (algorithm == Algorithm.HMAC_SHA256) { mac = HMAC.sha256(key); } else if (algorithm == Algorithm.HMAC_SHA512) { mac = HMAC.sha512(key); } else if (algorithm == Algorithm.HMAC_KECCAK224) { mac = HMAC.keccak224(key); } else if (algorithm == Algorithm.HMAC_KECCAK256) { mac = HMAC.keccak256(key); } else if (algorithm == Algorithm.HMAC_KECCAK384) { mac = HMAC.keccak384(key); } else if (algorithm == Algorithm.HMAC_KECCAK512) { mac = HMAC.keccak512(key); } else { throw new IllegalArgumentException("Unknown algorithm"); } return mac; }