加密方式 AES-CBC-128

將解密方法改成如下

 
public  string Decrypt(string toDecrypt, string key)
{
            SymmetricAlgorithm des = Rijndael.Create();
            byte[] inputByteArray = Encoding.UTF8.GetBytes(toDecrypt);
            des.Key = Encoding.UTF8.GetBytes(key);
            des.IV = des.Key;
            des.Mode 
 
= CipherMode.CBC;
            des.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = des.CreateEncryptor();

            return UTF8Encoding.UTF8.GetString(cTransform.TransformFinalBlock(inputByteArray, 0, inputByteArray.Length));
}

C# AES要解密的數據的長度無效