我正在尝试在 Java 中实现 AES,这是我使用的代码:
byte[] sessionKey = {00000000000000000000000000000000};
byte[] iv = {00000000000000000000000000000000};
byte[] plaintext = "6a84867cd77e12ad07ea1be895c53fa3".getBytes();
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(sessionKey, "AES"), new IvParameterSpec(iv));
byte[] ciphertext = cipher.doFinal(plaintext);
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(sessionKey, "AES"), new IvParameterSpec(iv));
byte[] deciphertext = cipher.doFinal(ciphertext);
我需要这个固定密钥和 IV 用于测试目的,但我得到以下异常:
Exception in thread "main"
java.security.InvalidAlgorithmParameterException:
Wrong IV length: must be 16 bytes long at
com.sun.crypto.provider.SunJCE_h.a(DashoA12275) at
com.sun.crypto.provider.AESCipher.engineInit(DashoA12275) at
javax.crypto.Cipher.a(DashoA12275) at
javax.crypto.Cipher.a(DashoA12275) at
javax.crypto.Cipher.init(DashoA12275) at
javax.crypto.Cipher.init(DashoA12275)
如何将此固定 IV 与此 AES 实现一起使用?有什么办法吗?