public void Decrypt(Operation operation)
{
var encryptor = operation.SymmetricAlgorithm;
var sourceFile = File.ReadAllBytes(operation.SourceFile);
var header = sourceFile.Take(HeaderSize);
var body = sourceFile.Skip(HeaderSize).Take(sourceFile.Length - HeaderSize).ToArray();
var cryptoTransform = encryptor.CreateDecryptor(encryptor.Key, encryptor.IV);
var resultArray = cryptoTransform.TransformFinalBlock(body, 0, body.Length);
File.WriteAllBytes(operation.TargetFile, header.Concat(resultArray).ToArray());
}
public void Encrypt(Operation operation)
{
var encHandler = _encryptors.Find(enc => enc.CanProcess(operation));
encHandler.Encrypt(operation);
}
public bool CanProcess(Operation operation)
{
return _encryptors.Any(enc => enc.CanProcess(operation));
}
public bool CanProcess(Operation operation)
{
var returnValue = new FileInfo(operation.SourceFile).Extension.ToLowerInvariant() == ".bmp";
return returnValue;
}