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当我调用以下方法从Windows应用程序解密字符串时，发现“填充无效且无法移除”错误。字符串是从一个asp.net应用程序加密的。两个应用程序引用相同的程序集我能够从asp.net应用程序加密和解密出任何问题。这里是我进行加密和解密的主要代码。填充无效，无法使用Rijndael解密进行删除
private static byte[] EncryptHelper(byte[] arrData, string Password, bool Encrypt)
{
//Create the SymetricAlgorithem object
SymmetricAlgorithm myAlg = new RijndaelManaged();
//define a salt value to derive the key.
byte[] salt = System.Text.Encoding.ASCII.GetBytes("hjkhj877ffasah");
//Instantiate Rfc2898DeriveBytes with the password and salt.
Rfc2898DeriveBytes key = new Rfc2898DeriveBytes(Password, salt);
myAlg.Key = key.GetBytes(myAlg.KeySize/8);
myAlg.IV = key.GetBytes(myAlg.BlockSize/8);
myAlg.Padding = PaddingMode.PKCS7;
//Create the ICryptoTransform Object
ICryptoTransform encrytptor = Encrypt ? myAlg.CreateEncryptor() : myAlg.CreateDecryptor();
//Create Memorystream to write the encrypted data
using (MemoryStream aStream = new MemoryStream())
{
//Create the CryptoStream Ojbect using the aStream object
using (CryptoStream encryptStream = new CryptoStream(aStream, encrytptor, CryptoStreamMode.Write))
{
//Write the contents to crypto stream
encryptStream.Write(arrData, 0, arrData.Length);
//Flush the cryptostream
encryptStream.FlushFinalBlock();
//Reposition the memorystream to write the contents to an array.
aStream.Position = 0;
}
aStream.Flush();
//Convert to an array and return
return aStream.ToArray();
}
}
这是我使用的纯文本转换自/至字节数组
private static byte[] GetBytes(string str)
{
byte[] bytes = new byte[str.Length * sizeof(char)];
System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
return bytes;
}
private static string GetString(byte[] bytes)
{
char[] chars = new char[bytes.Length/sizeof(char)];
System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
return new string(chars);
}
对于持续密文到数据库我使用Convert.ToBase64String（）和Convert.FromBase64String的方法。问题与我使用Rfc2898DeriveBytes类的方式有关吗？
如果您有两个代码库，则显然需要包含这两个代码库。在这里阅读一些答案。关闭，没有足够的信息，否则“过于本地化”。 –