@Test public void testSHA256() { MAC hmac = HMAC.sha256(ascii(EMPTY_STRING)); assertArrayEquals( hex("b613679a0814d9ec772f95d778c35fc5ff1697c493715653c6" + "c712144292c5ad"), hmac.digest(ascii(EMPTY_STRING))); hmac = HMAC.sha256(ascii("key")); assertArrayEquals( hex("f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997" + "479dbc2d1a3cd8"), 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; }