AEADBadTagException:标记不匹配

时间:2019-06-11 11:07:16

标签: java aes-gcm

我使用AES GCM模式在Android手机中加密数据,并将其发送到Windows中的Java应用程序 密文已创建并成功接收 在解密过程中出现异常(标记未命中)

我尝试删除关联的数据更新 我试图将提供程序设置为SunJCE

该代码在Java桌面应用程序之间运行良好,但在android和java之间使用加密解密过程时出现错误

我使用openjdk1.8

public static byte[] gcmMode(int gcmCipherMode, byte[] aadHeader,char[] password, byte[] inputBytes) {
    byte[] outputBytes = new byte[0];
    byte[] salt;
    byte[] iv;
    byte[] res;
    SecretKeySpec ks;
    try {
        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        Cipher c = Cipher.getInstance("AES/GCM/NoPadding");
        switch (gcmCipherMode) {
            case Cipher.ENCRYPT_MODE:
                salt = new byte[16]; random.nextBytes(salt);
                iv = new byte[12]; random.nextBytes(iv);
                res = salt(password, salt);
                ks = new SecretKeySpec(res, "AES");
                c.init(Cipher.ENCRYPT_MODE, ks, new GCMParameterSpec(128, iv));
                if (aadHeader != null) {
                    c.updateAAD(aadHeader);
                }
                outputBytes = arrayByteConcatenate(salt, iv);
                outputBytes = arrayByteConcatenate(outputBytes, c.doFinal(inputBytes));
                break;
            case Cipher.DECRYPT_MODE:
                if (inputBytes.length > 44) {
                    salt = arrayByteSplit(inputBytes, 0, 16);
                    iv = arrayByteSplit(inputBytes, 16, 28);
                    res = salt(password, salt);
                    ks = new SecretKeySpec(res, "AES");
                    c.init(Cipher.DECRYPT_MODE, ks, new GCMParameterSpec(128, iv));
                    if (aadHeader != null) {
                        c.updateAAD(aadHeader);
                    }
                    // Return our Decrypted String
                    outputBytes = c.doFinal(arrayByteSplit(inputBytes, 28, inputBytes.length));
                }else{
                    System.out.println("Wrong cipher");
                }
                break;

            default:
                System.out.println("UnKnown");
                break;
        }


    } catch (NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | IllegalBlockSizeException
            | BadPaddingException | InvalidParameterException
            | InvalidAlgorithmParameterException e) {
        e.printStackTrace();
    }
    return outputBytes;
}

static byte[] salt (char[] password, byte[] salt) {
    SecretKeyFactory skf = null;
    byte[] res = new byte[0];
    try {
        skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        PBEKeySpec spec = new PBEKeySpec(password, salt, 100000, 128);
        SecretKey key = skf.generateSecret(spec);
        res = key.getEncoded();
    } catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
        e.printStackTrace();
    }
    return res;
}

错误

javax.crypto.AEADBadTagException: Tag mismatch!
    at com.sun.crypto.provider.GaloisCounterMode.decryptFinal(GaloisCounterMode.java:578)
    at com.sun.crypto.provider.CipherCore.finalNoPadding(CipherCore.java:1116)
    at com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1053)
    at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:853)
    at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446)
    at javax.crypto.Cipher.doFinal(Cipher.java:2164)
    at algorithm.encryption.AESencryption.gcmMode(AESencryption.java:91)
    at ServerWorker.handleAuthentication(ServerWorker.java:97)
    at ServerWorker.startMessageReader(ServerWorker.java:67)
    at ServerWorker.handleClientSocket(ServerWorker.java:44)
    at ServerWorker.run(ServerWorker.java:36)

0 个答案:

没有答案
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