How to use

create

method

in

io.kaif.token.Encryptor

/**
 * key are 16 bytes, with 16 bytes-zero iv
 */
public static Encryptor create(final byte[] key) {
 final byte[] iv = new byte[KEY_LENGTH];
 Arrays.fill(iv, (byte) 0x00);
 return create(key, iv);
}

final byte[] cipherText = Encryptor.create(secretKey, randomIV).encrypt(payload);

@Test
public void decrypt() throws Exception {
 final byte[] bytes = new byte[100];
 final SecureRandom secureRandom = new SecureRandom();
 for (int i = 0; i < 100; i++) {
  final byte[] keys = new byte[16];
  secureRandom.nextBytes(keys);
  secureRandom.nextBytes(bytes);
  final byte[] actual = Decryptor.create(keys).decrypt(Encryptor.create(keys).encrypt(bytes));
  assertTrue(Arrays.equals(actual, bytes));
 }
}

@Test
public void ivPerformance() throws Exception {
 final byte[] bytes = new byte[1000];
 final SecureRandom secureRandom = new SecureRandom();
 final byte[] keys = new byte[16];
 final byte[] iv = new byte[16];
 secureRandom.nextBytes(keys);
 secureRandom.nextBytes(iv);
 final Decryptor decryptor = Decryptor.create(keys, iv);
 final Encryptor encryptor = Encryptor.create(keys, iv);
 for (int i = 0; i < 1000; i++) {
  secureRandom.nextBytes(bytes);
  final byte[] actual = decryptor.decrypt(encryptor.encrypt(bytes));
  assertTrue(Arrays.equals(actual, bytes));
  secureRandom.nextBytes(iv);
  encryptor.resetIvParameter(iv, 0);
  decryptor.resetIvParameter(iv, 0);
 }
}