Question

我的后端AES-128解密逻辑是正确的，因为当我在Java中进行AES-128加密后，它将正确解密。现在我尝试在Angular 8中复制加密逻辑，然后解密后的文本现在在初始字节处包含垃圾值，而剩下的一半字符串是正确的（类似``da％：��mL��͔1''， “ add”：“ uk”，“ com”：“哇”}）。

下面是我的加密角度代码

encryptData(value: any) {
    var iv = CryptoJS.enc.Base64.parse(this.generateIV());
    var key = CryptoJS.enc.Hex.parse('0123456789abcdef0123456789abcdef');
    var aesEncrypted = CryptoJS.AES.encrypt(CryptoJS.enc.Utf8.parse(value.toString()), key,{
        keySize: 128 / 8,
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
      });

    console.log(JSON.stringify({
                        payloadToken: this.getRSAEncryption("0123456789abcdef0123456789abcdef"), 
                        payloadVariable: aesEncrypted.iv.toString() , 
                        payloadText: aesEncrypted.toString()}
                ));
    return aesEncrypted.toString();

  }

generateIV() {
    var key = "";
    var hex = "0123456789abcdef";

    for (var i = 0; i < 15; i++) {
      key += hex.charAt(Math.floor(Math.random() * 15));
    }
    return key;
  }

以下是我在Java中的解密逻辑

public static String packetDecryption(String requestPacket){
      DecryptedTokenPacket decryptedTokenPacket = GSON.fromJson(requestPacket, 
      DecryptedTokenPacket.class);
      SecretKey key2 = new SecretKeySpec(decryptedTokenPacket.getDecData(), 0, 
      decryptedTokenPacket.getDecData().length, EncConstants.ENC_ALGO);
      // Instantiate the cipher
     Cipher cipher = Cipher.getInstance(EncConstants.CBC_ALGO);
     byte[] ivBytes = new Base64().decode(decryptedTokenPacket.getPayloadVariable());
     cipher.init(Cipher.DECRYPT_MODE, key2, new IvParameterSpec(ivBytes));
     byte[] encryptedTextBytes = new Base64().decode(decryptedTokenPacket.getPayloadText());
     byte[] decryptedTextBytes;
     decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
     return new String(decryptedTextBytes);
}

//this function is used in the gateway for decrypting the secret key and then pass through
public DecryptedTokenPacket decryptKeyUsingRSA(EncryptedPacket encryptedPacket){
                Cipher cipher = Cipher.getInstance(RSA_ALGO);
                cipher.init(Cipher.DECRYPT_MODE, privateKey);
                byte[] decData = cipher.doFinal(new Base64().decode(encryptedPacket.getPayloadToken()));
                decryptedTokenPacket.setPayloadText(encryptedPacket.getPayloadText());
                decryptedTokenPacket.setPayloadVariable(encryptedPacket.getPayloadVariable());
                decryptedTokenPacket.setDecData(decData);
return decryptedTokenPacket;
}

豆子

public class DecryptedTokenPacket {
    private String payloadVariable;
    private String payloadText;
    private byte[] decData;
}

public class EncryptedPacket {
    private String payloadVariable;
    private String payloadText;
    private String payloadToken;
}

不确定在开始时是什么导致此垃圾值。有人可以帮我解决这个问题吗？

Answer 1

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

从角度8加密时，解密文本开头（AES 128位）的垃圾值

1 个答案: