/** * 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; }
@Test public void testKeccak384() { MAC hmac = HMAC.keccak384(ascii(EMPTY_STRING)); assertArrayEquals( hex( "09e18efb747979fcbc89849ff5c388a763c5fed1836a2850b7" + "9598eaa3a5cf014d57e337923e69c6f4a2dade032b02" + "40"), hmac.digest(ascii(EMPTY_STRING))); hmac = HMAC.keccak384(ascii("key")); assertArrayEquals( hex( "73acb07b5b1db5431758262b55e5923d362de4492229a74203" + "02c80d4348ca1b11ecea06fb1c232f9b832aadca8cd2" + "89"), hmac.digest(ascii(PANGRAM))); }