填充无效，无法删除.Rjindaal 加密

我使用相同的初始化向量和相同的密钥进行加密和解密。但是我收到错误消息说"填充无效且无法删除"在 Web 应用程序中，我正在加密数据并将加密数据保存在 sql 服务器表列 （nvarchar（max）） 中。我有Windows服务，可以读取加密数据并解密。有人可以告诉我我哪里做错了。

public byte[] Encrypt(string clearText, string key, byte[] initialisationVector, int blockSizeInBits)
{//hidden logic
    rijndaelManaged.Mode = CipherMode.CBC;
    rijndaelManaged.Padding = PaddingMode.PKCS7;
//hidden logic
        return memoryStream.ToArray();
    }

像这样打电话

    Dim encryptionKey As String = ConfigurationManager.AppSettings("Key")
    ' Arrange - need 32 byte IV for 256-bit
    Dim cryptographer3 As ICryptographer = New Cryptographer()
    Dim initialisationVector3 As Byte() = {&H26, &HDC, &HFF, &H0, &HAD, &HED, _
        &H7A, &HEE, &HC5, &HFE, &H7, &HAF, _
        &H4D, &H8, &H22, &H3C, &H26, &HDC, _
        &HFF, &H0, &HAD, &HED, &H7A, &HEE, _
        &HC5, &HFE, &H7, &HAF, &H4D, &H8, _
        &H22, &H3C}
    ' Act
    Dim encryptedString As Byte() = cryptographer3.Encrypt(strForEncryption, encryptionKey, initialisationVector3, 256)
    'Dim decrypt3 As String = cryptographer3.Decrypt(encryptedString, Key, initialisationVector3, 256)
    Return System.Text.Encoding.Unicode.GetString(encryptedString)

解密方式

public string Decrypt(byte[] cipherText, string key, byte[] initialisationVector, int blockSizeInBits)
{
  //hidden logic
    rijndaelManaged.Mode = CipherMode.CBC;
    rijndaelManaged.Padding = PaddingMode.PKCS7;
    //hidden logic
}

像这样打电话

if (encryptedIdentificationValue.Trim().Length > 0)
        {
            string decryptionKey = ConfigurationManager.AppSettings["Key"];
            // Arrange - need 32 byte IV for 256-bit
            ICryptographer cryptographer3 = new Cryptographer();
            byte[] initialisationVector3 =
                {
                    0x26, 0xdc, 0xff, 0x0, 0xad, 0xed,
                    0x7a, 0xee, 0xc5, 0xfe, 0x7, 0xaf,
                    0x4d, 0x8, 0x22, 0x3c, 0x26, 0xdc,
                    0xff, 0x0, 0xad, 0xed, 0x7a, 0xee,
                    0xc5, 0xfe, 0x7, 0xaf, 0x4d, 0x8,
                    0x22, 0x3c
                };
            return cryptographer3.Decrypt(encryptedIdentificationValue, decryptionKey, initialisationVector3, 256);
        }