将DES加密数据从Java解密为.Net

我在解密使用DES算法在Java中加密的加密字符串时遇到问题 . 我认为我的主要问题是，我在java代码中没有看到任何salt或IV规范 .

我有以下信息：这个HexSequence是我必须解密的加密数据：9465E19A6B9060D75C3F7256ED1F4D21EDC18BB185304B92061308A32725BE760F1847E3B19C1D3548F61165EA2E785E48F61165EA2E78

算法：DES，填充：DES / ECB / NoPadding，密钥：TESTKEY123

解密后我得到：550000000018h000000273Al2011112214340600000000000000000000000000

用于加密数据的java代码如下所示：

public class Encryptor {

private SecretKey secretKey;
private Cipher cipher;

public Encryptor(String algorithmName, String paddingName, String key) {
    String keyHexCode = StringUtils.convertUnicodeToHexCode(key.getBytes());
    try {
        byte[] desKeyData = StringUtils.convertHexStringToByteArray(keyHexCode);

        DESKeySpec desKeySpec = null;
        try {
            desKeySpec = new DESKeySpec(desKeyData);
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(algorithmName);
        try {
            secretKey = keyFactory.generateSecret(desKeySpec);
        } catch (InvalidKeySpecException e) {
            e.printStackTrace();
        }

        try {
            cipher = Cipher.getInstance(paddingName);
        } catch (NoSuchPaddingException e) {
            // TODO: handle exception
        }
    } catch (NoSuchAlgorithmException e) {
        // TODO: handle exception
    }
}

private void initEncryptor(int mode) {
    try {
        cipher.init(mode, secretKey);
    } catch (InvalidKeyException e) {
        // TODO: handle exception
    }
}

public String encrypt(String clearText) {
    initEncryptor(Cipher.ENCRYPT_MODE);
    try {
        // Encrypt the cleartext
        byte[] encryptedBytes = cipher.doFinal(clearText.getBytes());
        return StringUtils.convertUnicodeToHexCode(encryptedBytes).toUpperCase();
    } catch (IllegalBlockSizeException e) {
        // TODO: handle exception
    } catch (BadPaddingException e) {
        // TODO: handle exception
    }
    return "";
}

public String decrypt(String encryptedTextHex) {
    byte[] encryptedText = StringUtils.convertHexCodeSequenceToUnicode(encryptedTextHex);
    initEncryptor(Cipher.DECRYPT_MODE);
    try {
        // Decrypt the encryptedTextHex
        return new String(cipher.doFinal(encryptedText));
    } catch (IllegalBlockSizeException e) {
        // TODO: handle exception
    } catch (BadPaddingException e) {
        // TODO: handle exception
    }
    return "";
}
}

我尝试使用以下.net代码来解密数据：

public class URLDecryptor
{
public static string GetValue(string Data)
{
    DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
    byte[] bytes = System.Text.UnicodeEncoding.Unicode.GetBytes("TESTKEY123");
    byte[] salt = new byte[8];
    byte[] iv = new byte[8];
    Rfc2898DeriveBytes password = new Rfc2898DeriveBytes("TESTKEY123", salt);
    cryptoProvider.Key = password.GetBytes(8);
    cryptoProvider.IV = iv;
    cryptoProvider.Padding = PaddingMode.None;
    cryptoProvider.Mode = CipherMode.ECB;

    MemoryStream memStream = new MemoryStream(convertHexCodeSequenceToUnicode(Data));
    CryptoStream cryptoStream = new CryptoStream(memStream, cryptoProvider.CreateDecryptor(cryptoProvider.Key, cryptoProvider.IV), CryptoStreamMode.Read);
    StreamReader reader = new StreamReader(cryptoStream);
    string value = reader.ReadToEnd;

    reader.Close();
    cryptoStream.Close();

    return value;
}

private static byte[] convertHexCodeSequenceToUnicode(string hexCodeSequence)
{
    byte[] bytes = new byte[(hexCodeSequence.Length / 2) + 1]; //This is strange
    int index = 0;
    int count = 0;
    while (count < hexCodeSequence.Length) {
        string hexCode = hexCodeSequence.Substring(count, 2);
        bytes[index] = getHexValue(hexCode);
        count += 2;
        index += 1;
    }

    return bytes;
}

public static byte getHexValue(string hexCode)
{
    return byte.Parse(hexCode, System.Globalization.NumberStyles.HexNumber);
}
}

线路有点奇怪：

byte[] bytes = new byte[(hexCodeSequence.Length / 2) + 1];

数据长度为55个字节，但我必须将其放入56个字节 . 它向数组和数组附加一个0字节，但如果我不这样做，则cryptostream会抛出一个错误，即要解密的数据太短 .

如果我这样尝试，我只会得到垃圾作为输出 . 我正在使用空盐和IV，因为我无法看到java代码使用的是哪种盐和IV . 有什么默认值我不知道吗？

编辑：Java代码从hexCode获取字节：

private static byte getNegativeValueForHexConversion(String hexCode) {
int i = Integer.parseInt(hexCode, 16);
return (byte) (i > 127 ? i - 256 : i);
}

看起来Java使用带符号的字节，而.Net使用无符号字节来实现其所有功能 . 这可能是问题吗？