java - AES用C#和Java加密文件

我已经用这种方法在C＃中加密了文件：

public byte[] Crypt(byte[] filearray, string sKey)
        {
                AesManaged DES = new AesManaged();
                DES.Key = Encoding.UTF8.GetBytes(sKey);
                DES.Mode = CipherMode.ECB;
                DES.Padding = PaddingMode.PKCS7;
                ICryptoTransform crypt = DES.CreateEncryptor();
                byte[] cipher = crypt.TransformFinalBlock(niz, 0, filearray.Length);
                String encryptedText = Convert.ToBase64String(cipher);
                return cipher.ToArray();
            }

现在，我尝试使用Java解密文件：

private static byte[] transform(string base64Key, final byte[] fileBytes) throws InvalidKeyException, InvalidAlgorithmParameterException, NoSuchProviderException
   {
       final byte[] keyBytes = base64Key.getBytes(StandardCharsets.UTF_8);
       final byte[] ivBytes = base64Iv.getBytes(StandardCharsets.UTF_8);
       final SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
       final IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
       byte[] transformedBytes = null;
       try
       {
           Security.addProvider(new BouncyCastleProvider());
           final Cipher cipher = Cipher.getInstance("AES/ECB/PKCS7Padding");;
           cipher.init(Cipher.DECRYPT_MODE, keySpec);
           transformedBytes = cipher.doFinal(fileBytes);
       }
       catch (NoSuchAlgorithmException | NoSuchPaddingException | IllegalBlockSizeException |
               BadPaddingException e)
       {
           e.printStackTrace();
       }
       return transformedBytes;
   }

当我尝试执行此功能时，出现异常


javax.crypto.BadPaddingException：填充块已损坏
在org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher $ BufferedGenericBlockCipher.doFinal处（未知来源）
在org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher.engineDoFinal（未知来源）
在javax.crypto.Cipher.doFinal（Cipher.java:2165）

最佳答案

尝试使用其他填充，例如：

Cipher.getInstance("AES/ECB/NoPadding");

要么

Cipher.getInstance("AES/ECB/PKCS5Padding");

代替

Cipher.getInstance("AES/ECB/PKCS7Padding");