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我想在 Javascript 中进行加密并在 Java 中解密它，但它一直让我遇到错误的填充异常。我不知道该怎么做。

这是代码

  key: string;
  iv:string
  keySize:256
  iterations:1000;

  constructor() { }

  encrypt(keys, passw){
    var salt = "12345678123456781234567812345678"
    // var salt = CryptoJS.lib.WordArray.random(128/8);
    
    console.log(passw)
    console.log(salt)

    var key = CryptoJS.PBKDF2(passw, salt, {
      keySize: this.keySize/32,
      iterations: this.iterations
    });

    var iv = CryptoJS.lib.WordArray.random(128/8);

    var encrypted = CryptoJS.AES.encrypt(keys, key,{
      iv: iv,
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7
    })

    var transitmessage = salt.toString() +  iv.toString() + encrypted.toString()
    console.log("tl: " + transitmessage.length)
    return transitmessage;
  }

public String decrypt(String encryptText) throws Exception {
        try {
            System.out.println("begin: " + encryptText);
            
            String saltt = encryptText.substring(0,32);
            
            String iv = encryptText.substring(32,64);
            String encText = encryptText.substring(64);
            System.out.println("enc: " + encText);
            
            byte[] encryptTextBytes = Base64.getDecoder().decode(encText);
        
            System.out.println("encbytes: " + encryptTextBytes);
            
            SecretKeySpec key;
            try {
                SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(this.secretKeyFactoryAlgorithm);
                KeySpec keySpec = new PBEKeySpec(TOKEN.toCharArray(), hex(saltt), this.pwdIterations, this.keySize);
                SecretKey secretKeyTemp = secretKeyFactory.generateSecret(keySpec);
                key = new SecretKeySpec(secretKeyTemp.getEncoded(),keyAlgorithm);
            }catch(NoSuchAlgorithmException | InvalidKeySpecException e) {
                e.printStackTrace();
                return null;
            }
        
            //decrypt the message
            Cipher cipher = Cipher.getInstance(this.encryptAlgorithm);
            cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(hex(iv)));
            
            byte[] decryptTextBytes = null;
            try {
                decryptTextBytes = cipher.doFinal(encryptTextBytes);
            } catch (IllegalBlockSizeException e) {
                e.printStackTrace();
            } catch (BadPaddingException e) {
                e.printStackTrace();
            }
            
            String text = new String(decryptTextBytes);
            System.out.println("text: " + text);
            return text;
        }catch(Exception e) {
            e.printStackTrace();
            return null;
        }
    }

错误是这样的：javax.crypto.BadPaddingException：给定最终块未正确填充。如果在解密期间使用了错误的密钥，则可能会出现此类问题。

iv : [0000: A7 18 56 5D 79 22 2D C8 3F 3A 62 A0 BE 22 A1 D2 ..V]y"-.?:b.."..]

请帮助我，我需要尽快完成它。谢谢。

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0 回答 0