public static byte[] AESCrypto(CryptoOperation cryptoOperation, AesCryptoServiceProvider aes, byte[] message)
{
using (var memStream = new MemoryStream())
{
CryptoStream cryptoStream = null;
if (cryptoOperation == CryptoOperation.ENCRYPT)
{
cryptoStream = new CryptoStream(memStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
}
else if (cryptoOperation == CryptoOperation.DECRYPT)
{
cryptoStream = new CryptoStream(memStream, aes.CreateDecryptor(), CryptoStreamMode.Write);
}
if (cryptoStream == null)
{
return(null);
}
cryptoStream.Write(message, 0, message.Length);
cryptoStream.FlushFinalBlock();
return(memStream.ToArray());
}
}
public static byte[] DESCrypto(CryptoOperation cryptoOperation, byte[] IV, byte[] key, byte[] message)
{
using (var DES = new DESCryptoServiceProvider())
{
DES.IV = IV;
DES.Key = key;
DES.Mode = CipherMode.CBC;
DES.Padding = PaddingMode.PKCS7;
using (var memStream = new MemoryStream())
{
CryptoStream cryptoStream = null;
if (cryptoOperation == CryptoOperation.ENCRYPT)
{
cryptoStream = new CryptoStream(memStream, DES.CreateEncryptor(), CryptoStreamMode.Write);
}
else if (cryptoOperation == CryptoOperation.DECRYPT)
{
cryptoStream = new CryptoStream(memStream, DES.CreateDecryptor(), CryptoStreamMode.Write);
}
if (cryptoStream == null)
{
return(null);
}
cryptoStream.Write(message, 0, message.Length);
cryptoStream.FlushFinalBlock();
return(memStream.ToArray());
}
}
}
/// <summary>
/// Create and populate a result for an encryption with authentication algorithm.
/// </summary>
/// <param name="Identifier"></param>
/// <param name="OID"></param>
/// <param name="Integrity"></param>
/// <param name="Data"></param>
/// <param name="Key">Key data</param>
/// <param name="IV">Initialization Vector</param>
public CryptoData(CryptoAlgorithmID Identifier, string OID,
byte[] Integrity, byte[] Data, byte [] Key, byte []IV) {
_Identifier = Identifier;
_Integrity = Integrity;
_Data = Data;
_OID = OID;
_Key = Key;
_IV = IV;
_CryptoOperation = CryptoOperation.Unknown;
}
/// <summary>
/// Create and populate a result for an encryption with authentication algorithm.
/// </summary>
/// <param name="Identifier"></param>
/// <param name="OID"></param>
/// <param name="Value"></param>
/// <param name="Data"></param>
public CryptoData(CryptoAlgorithmID Identifier, string OID,
byte[] Value, byte[] Data) {
_Identifier = Identifier;
_Integrity = Value;
_Data = Data;
_OID = OID;
_Key = null;
_IV = null;
_CryptoOperation = CryptoOperation.Unknown;
}