“填充无效，无法删除” – 这段代码有什么问题？
每次运行和加密时，输出都是可变的，当我尝试解密时，我得到“填充无效且无法删除”。 现在和这一天打了一两天，我不知所措。
private static string strIV = "abcdefghijklmnmo"; //The initialization vector. private static string strKey = "abcdefghijklmnmoabcdefghijklmnmo"; //The key used to encrypt the text. public static string Decrypt(string TextToDecrypt) { return Decryptor(TextToDecrypt); } private static string Encryptor(string TextToEncrypt) { //Turn the plaintext into a byte array. byte[] PlainTextBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(TextToEncrypt); //Setup the AES providor for our purposes. AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider(); aesProvider.Key = System.Text.Encoding.ASCII.GetBytes(strKey); aesProvider.IV = System.Text.Encoding.ASCII.GetBytes(strIV); aesProvider.BlockSize = 128; aesProvider.KeySize = 256; aesProvider.Padding = PaddingMode.PKCS7; aesProvider.Mode = CipherMode.CBC; ICryptoTransform cryptoTransform = aesProvider.CreateEncryptor(aesProvider.Key, aesProvider.IV); byte[] EncryptedBytes = cryptoTransform.TransformFinalBlock(PlainTextBytes, 0, PlainTextBytes.Length); return Convert.ToBase64String(EncryptedBytes); } private static string Decryptor(string TextToDecrypt) { byte[] EncryptedBytes = Convert.FromBase64String(TextToDecrypt); //Setup the AES provider for decrypting. AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider(); aesProvider.Key = System.Text.Encoding.ASCII.GetBytes(strKey); aesProvider.IV = System.Text.Encoding.ASCII.GetBytes(strIV); aesProvider.BlockSize = 128; aesProvider.KeySize = 256; aesProvider.Padding = PaddingMode.PKCS7; aesProvider.Mode = CipherMode.CBC; ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor(aesProvider.Key, aesProvider.IV); byte[] DecryptedBytes = cryptoTransform.TransformFinalBlock(EncryptedBytes, 0, EncryptedBytes.Length); return System.Text.Encoding.ASCII.GetString(DecryptedBytes); } } 在设置Key和IV之前，需要设置BlockSize和KeySize 。 此外，您应该为每条消息生成一个随机IV，并注意ICryptoTransform实现IDisposable因此应该处理这些对象。