在 C# 中解密 AES256

Question

static byte[] HexToByteArray(string hex)
    {
        byte[] bytes = new byte[hex.Length / 2];
        for (int i = 0; i < bytes.Length; i++)
        {
            bytes[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
        }
        return bytes;
    }

 byte[] data = HexToByteArray("004FB8A54E37D642BAB9E26A10242F0D02000000DB7B7425C4EFA00A50FCE2BF38445B5E25ED086E47304A56DD2B3DC85E281291");
           
            using (AesCryptoServiceProvider csp = new AesCryptoServiceProvider())
            {
                csp.KeySize = 256;
                csp.BlockSize = 128;
                csp.Key = new byte[32] {
                //    1     9     1     2     7     3     5     5
                    0x31, 0x39, 0x31, 0x32, 0x37, 0x33, 0x35, 0x35,
                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
                };
                csp.Padding = PaddingMode.PKCS7;
                csp.Mode = CipherMode.CBC;

                byte[] iv = new byte[16];
                Array.Copy(data, iv, 16);
                csp.IV = iv;

                byte[] decrypted = csp.CreateDecryptor().TransformFinalBlock(data, 16, data.Length - 16);
                string plaintext = Encoding.UTF8.GetString(decrypted);
                MessageBox.Show(plaintext);
                Console.WriteLine(plaintext);
            }

这里是SQL加密：

create master key encryption by
    password = '19127355';

--tao certificate
create certificate myCert
    with subject = 'myCert';

create symmetric key PriKey
with algorithm = AES_256
encryption by certificate myCert;

create procedure SP_INS_NHANVIEN
(
    @MANV varchar(20), 
    @HOTEN nvarchar(100),
    @EMAIL varchar(20) = null,
    @LUONG int,
    @TENDN nvarchar(100),
    @MATKHAU varchar(20))
as
begin
    declare @encP2 varbinary(max);
    declare @encL varbinary(max);
    open symmetric key PriKey
    decryption by certificate myCert
    set @encP2 = convert(varbinary, hashbytes('SHA1', @MATKHAU));
    set @encL = encryptbykey(key_guid('PriKey'), convert(varbinary, @LUONG))
    insert into NHANVIEN
    values (@MANV, @HOTEN, @EMAIL, @encL, @TENDN, @encP2);
end

我想解密上面的值（AES256）。密钥是 19127355。但是在 SQL Server 中加密时，它只有 52 个字节，所以我无法在 C# 中解密。 （我仍然可以通过查询命令在 SQL Server 中解密它）。我能做些什么来解决这个问题。 （解密结果为3000000）。帮帮我