public ActionResult RSA(RSAViewModel model)
{
RSAViewModel viewModel = RSAUtility.rsa2(model);
ModelState.Clear();
return(View(viewModel));
}
// GET: RSA/Create
public ActionResult GenerarLlaves(string primo1, string primo2)
{
RSAViewModel rsa = new RSAViewModel();
rsa.ValorP = Convert.ToInt32(primo1);
rsa.ValorQ = Convert.ToInt32(primo2);
return(View(rsa));
}
public RSAView()
{
Initialized += delegate
{
History.Document.Blocks.Clear();
viewModel = (RSAViewModel)DataContext;
viewModel.History = History;
viewModel.GenerateNewRSA((int)scrollBar.Value);
message.Text = Languages.defaultMessageRSA;
};
InitializeComponent();
}
public async Task RSAGenerate(string message)
{
try
{
var model = new RSAViewModel();
model.PlainText = message;
var result = RSAUtility.rsa2(model);
await Clients.All.SendAsync("ReceiveMessage", result);
}
catch
{
await Clients.All.SendAsync("ReceiveMessage", "Invalid input");
}
}
public ActionResult GenerarLlaves(RSAViewModel rsa)
{
try
{
if (ModelState.IsValid && rsa.ValorP > 0 && rsa.ValorQ > 0)
{
if (rsa.ValorP == 1 || rsa.ValorQ == 1)
{
return(View(rsa));
}
else
{
var primo1 = numeroPrimo(rsa.ValorP, 2);
var primo2 = numeroPrimo(rsa.ValorQ, 2);
if (primo1 == true && primo2 == true)
{
if (rsa.ValorP * rsa.ValorQ < 255)
{
ViewBag.Message = "Please verify the multiplication of p*q is greater than 256";
return(View(rsa));
}
else
{
FilePath = Server.MapPath("~/Archivo");
CifradoRSA RSA = new CifradoRSA();
RSA.GenerarLlaves(rsa.ValorP, rsa.ValorQ, FilePath);
return(RedirectToAction(nameof(LlavesGeneradas)));
}
}
else
{
ViewBag.Message = "Please verify the numbers are prime";
return(View(rsa));
}
}
}
else
{
ViewBag.Message = "Please verify the number is greater than 0";
return(View(rsa));
}
}
catch
{
return(View());
}
}
public static RSAViewModel rsa2(RSAViewModel model)
{
try
{
RSACryptoServiceProvider cryptoServiceProvider = new RSACryptoServiceProvider(1024);
RSAParameters parameters1 = cryptoServiceProvider.ExportParameters(false);
RSAParameters parameters2 = cryptoServiceProvider.ExportParameters(true);
model.PublicKey = "e=" + RSAUtility.ByteToString(parameters1.Exponent) + Environment.NewLine + "n=" + RSAUtility.ByteToString(parameters1.Modulus);
model.PrivateKey = "d=" + RSAUtility.ByteToString(parameters2.D) + Environment.NewLine + "n=" + RSAUtility.ByteToString(parameters1.Modulus);
cryptoServiceProvider.ImportParameters(parameters1);
byte[] numArray = cryptoServiceProvider.Encrypt(RSAUtility.StringToByte(model.PlainText), true);
model.CipherText = RSAUtility.ByteToString(numArray);
cryptoServiceProvider.ImportParameters(parameters2);
byte[] decryptedData = cryptoServiceProvider.Decrypt(numArray, true);
model.DecryptedText = RSAUtility.ByteToAscii(decryptedData);
}
catch (CryptographicException ex)
{
}
return(model);
}
public ActionResult RSA()
{
RSAViewModel model = new RSAViewModel();
return(View(model));
}