CryptoJS和Java代码的不同输出加密

Question

当然，我需要从客户端(JavaScript)加密字符串，并从服务器端( Java )解密，所以我找到了CryptoJS，我用相同的params/配置( mi Java代码)编写了代码，但是输出总是不同的，您知道吗？

我使用CBC和NoPadding

CryptoJS

http://jsfiddle.net/Soldier/gCHAG/

<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/aes.js">
</script>
<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/components/pad-nopadding-min.js"></script>
<script>

    function padString(source) {
        var paddingChar = ' ';
        var size = 16;
        var x = source.length % size;
        var padLength = size - x;

        for (var i = 0; i < padLength; i++) source += paddingChar;

        return source;
    }

    var key = CryptoJS.enc.Hex.parse('0123456789abcdef');
    var iv  = CryptoJS.enc.Hex.parse('fedcba9876543210');
    var message = "soldier";
    var padMsg = padString(message);

    var encrypted = CryptoJS.AES.encrypt(padMsg, key, { iv: iv, padding: CryptoJS.pad.NoPadding, mode: CryptoJS.mode.CBC});

    console.log("Encrypted: "+encrypted);
    console.log("Encrypted text: "+encrypted.ciphertext);

</script>

Java代码

import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.*;

public class AesCipher {

    private static final String algorithm = "AES/CBC/NoPadding";

    private static final byte[] keyValue = new byte[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
    private static final byte[] ivValue = new byte[] { 'f', 'e', 'd', 'c', 'b', 'a', '9', '8', '7', '6', '5', '4', '3', '2', '1', '0' };

    private static final IvParameterSpec ivspec = new IvParameterSpec(ivValue);
    private static final SecretKeySpec keyspec = new SecretKeySpec(keyValue, "AES");

    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();

    public static String encrypt(String Data) throws Exception {
        Cipher c = Cipher.getInstance(algorithm);
        c.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
        byte[] encVal = c.doFinal(Data.getBytes());
        String encryptedValue = new BASE64Encoder().encode(encVal);
        return encryptedValue;
    }

    public static String decrypt(String encryptedData) throws Exception {
        Cipher c = Cipher.getInstance(algorithm);
        c.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
        byte[] decordedValue = new BASE64Decoder().decodeBuffer(encryptedData);
        byte[] decValue = c.doFinal(decordedValue);
        String decryptedValue = new String(decValue);
        return decryptedValue;
    }

    public static String bytesToHex(byte[] bytes) {
        char[] hexChars = new char[bytes.length * 2];
        int v;
        for ( int j = 0; j < bytes.length; j++ ) {
            v = bytes[j] & 0xFF;
            hexChars[j * 2] = hexArray[v >>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }
        return new String(hexChars);
    }

    private static String padString(String source) {
        char paddingChar = ' ';
        int size = 16;
        int x = source.length() % size;
        int padLength = size - x;

        for (int i = 0; i < padLength; i++)
        {
            source += paddingChar;
        }
        return source;
      }

    public static void main(String[] args) throws Exception {

        String password = "soldier";
        String passwordEnc = AesCipher.encrypt(padString(password));
        String passwordDec = AesCipher.decrypt(passwordEnc);

        System.out.println("Plain Text : " + password);
        System.out.println("Encrypted Text : " + passwordEnc);
        System.out.println("Decrypted Text : " + passwordDec);
    }

}

原始字符串：

soldier

来自CryptoJS的输出：

Encrypted: VNzZNKJTqfRbM7zO/M4cDQ==
Encrypted Hex: 54dcd934a253a9f45b33bccefcce1c0d

来自Java代码的输出：

Encrypted: j6dSmg2lfjY2RpN91GNgNw==
Encrypted Hex: 6a3664536d67326c666a593252704e3931474e674e773d3d

加密的base64字符串具有相同的长度，但不具有十六进制。如果我将CryptoJS的输出结果放入Java中，则解密是不正确的。

致以敬意，

Answer 1

这里的一个问题是，您使用64位键和iv位键。

CryptoJS支持AES- 128、AES-192和AES-256，AFAIK支持AES-128，因此您可能应该指定128个位键和IVs。这可能是整个问题-我确信使用错误的密钥大小是未定义的行为。

至于输出长度的差异，22个base64字符是132个信息位，所以它是一个128位的答案(没有唯一的128位长度，21个字符可能太少)。CryptoJS输出32个十六进制字符，这是128个信息位。这似乎是对的。

Java代码输出48个十六进制字符，即192位信息。所以是java代码错了。不过，我不知道它为什么会输出更多。