我正在尝试用 C# 解密来自 Java 的 AES 加密字符串。当我解密时，它返回乱码并且与通过 Java 代码加密的原始纯文本不匹配。请指导我这里出了什么问题。
附上用于加密的 Java 代码和用于解密的 C# 代码。如果您需要更多详细信息，请告诉我。
我也尝试了 AesCryptoServiceProvider ，但它也不起作用。您可以在 C# 中的注释代码中看到尝试过的代码。
请注意，我只能对我的 C# 代码进行更改以匹配 Java 代码，并且不能对 Java 端进行任何编辑。
用于加密的 Java 代码：
/** encrypt cipher */
private static final Cipher ENCRYPT_CIPHER = generateCipher(Cipher.ENCRYPT_MODE);
private static String ENCRYPT_KEY = "key";
/**
* @param val
* @return encrypted value
* @throws Exception
*/
public String encrypt(final String val) throws Exception {
return new String(Base64.encodeBase64(ENCRYPT_CIPHER.doFinal(val.getBytes()), true)).toString();
}
/**
* @param encrypt
* @return cipher
*/
protected static Cipher generateCipher(final int encrypt) {
try {
final Cipher cipher = Cipher.getInstance("AES");
cipher.init(encrypt, SecretKeyFactory.getInstance("AES").generateSecret(new IBMAESKeySpec(Base64.decodeBase64(ENCRYPT_KEY.getBytes()))));
return cipher;
} catch (final Exception e) {
return null;
}
}
用于解密的 C# 代码：
private static String ENCRYPT_KEY = "key";
public String decodeString (String encodedStr)
{
/*using (var aesCryptoProvider = new AesCryptoServiceProvider())
{
aesCryptoProvider.BlockSize = 128;
aesCryptoProvider.KeySize = 256;
aesCryptoProvider.Key = Convert.FromBase64String(ENCRYPT_KEY.ToString());
aesCryptoProvider.Padding = PaddingMode.Zeros;
aesCryptoProvider.Mode = CipherMode.ECB;
using (var decryptor = aesCryptoProvider.CreateDecryptor())
using (var memoryStream = new MemoryStream(Convert.FromBase64String(encodedStr)))
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
using (var streamReader = new StreamReader(cryptoStream, Encoding.UTF8))
{
decodedStr = streamReader.ReadToEnd();
}
}
*/
using (AesManaged aesAlg = new AesManaged())
{
aesAlg.Key = Convert.FromBase64String(ENCRYPT_KEY.ToString()); ;
aesAlg.BlockSize = 128;
aesAlg.KeySize = 256;
aesAlg.Mode = CipherMode.ECB;
aesAlg.Padding = PaddingMode.Zeros;
// Create a decrytor to perform the stream transform.
ICryptoTransform decryptor = aesAlg.CreateDecryptor();
// Create the streams used for decryption.
using (MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(encodedStr)))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
// Read the decrypted bytes from the decrypting stream
// and place them in a string.
decodedStr = srDecrypt.ReadToEnd();
}
}
}
}
}