/** * 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 testSHA512() { MAC hmac = HMAC.sha512(ascii(EMPTY_STRING)); assertArrayEquals( hex( "b936cee86c9f87aa5d3c6f2e84cb5a4239a5fe50480a6ec66b" + "70ab5b1f4ac6730c6c515421b327ec1d69402e53dfb4" + "9ad7381eb067b338fd7b0cb22247225d47"), hmac.digest(ascii(EMPTY_STRING))); hmac = HMAC.sha512(ascii("key")); assertArrayEquals( hex( "b42af09057bac1e2d41708e48a902e09b5ff7f12ab428a4fe8" + "6653c73dd248fb82f948a549f7b791a5b41915ee4d1e" + "c3935357e4e2317250d0372afa2ebeeb3a"), hmac.digest(ascii(PANGRAM))); }