private void testBlockCiphers() { for (String algorithm : new String[] {"AES", "XTEA", "FOG"}) { byte[] test = new byte[4096]; BlockCipher cipher = CipherFactory.getBlockCipher(algorithm); cipher.setKey("abcdefghijklmnop".getBytes()); for (int i = 0; i < 10; i++) { cipher.encrypt(test, 0, test.length); } assertFalse(isCompressible(test)); for (int i = 0; i < 10; i++) { cipher.decrypt(test, 0, test.length); } assertEquals(new byte[test.length], test); assertTrue(isCompressible(test)); } }
private void testAES() { BlockCipher test = CipherFactory.getBlockCipher("AES"); String r; byte[] data; // test vector from // http://csrc.nist.gov/groups/STM/cavp/documents/aes/KAT_AES.zip // ECBVarTxt128e.txt // COUNT = 0 test.setKey(StringUtils.convertHexToBytes("00000000000000000000000000000000")); data = StringUtils.convertHexToBytes("80000000000000000000000000000000"); test.encrypt(data, 0, data.length); r = StringUtils.convertBytesToHex(data); assertEquals("3ad78e726c1ec02b7ebfe92b23d9ec34", r); // COUNT = 127 test.setKey(StringUtils.convertHexToBytes("00000000000000000000000000000000")); data = StringUtils.convertHexToBytes("ffffffffffffffffffffffffffffffff"); test.encrypt(data, 0, data.length); r = StringUtils.convertBytesToHex(data); assertEquals("3f5b8cc9ea855a0afa7347d23e8d664e", r); // test vector test.setKey(StringUtils.convertHexToBytes("2b7e151628aed2a6abf7158809cf4f3c")); data = StringUtils.convertHexToBytes("6bc1bee22e409f96e93d7e117393172a"); test.encrypt(data, 0, data.length); r = StringUtils.convertBytesToHex(data); assertEquals("3ad77bb40d7a3660a89ecaf32466ef97", r); test.setKey(StringUtils.convertHexToBytes("000102030405060708090A0B0C0D0E0F")); byte[] in = new byte[128]; byte[] enc = new byte[128]; test.encrypt(enc, 0, 128); test.decrypt(enc, 0, 128); if (!Arrays.equals(in, enc)) { throw new AssertionError(); } for (int i = 0; i < 10; i++) { test.encrypt(in, 0, 128); test.decrypt(enc, 0, 128); } }