/// <summary>
/// Metodo que genera llaves publica y privada del algoritmo RSA
/// </summary>
/// <returns>Modelo con informacion de llaves generadas</returns>
private RSAModel GenerateOwnkeyEncrypts(string partnerKeys, string pathPublicKey)
{
int keySize = FileWriter.parameters.Value.KeyRSASize;
CspParameters cp = new CspParameters();
RSAModel rsaModel = new RSAModel();
try
{
cp.KeyContainerName = "OwnkeyEncrypts" + partnerKeys;
RSACryptoServiceProvider cryptoServiceProvider = new RSACryptoServiceProvider(keySize, cp);
FileWriter.WriteOnEvents(EventLevel.Info, "Inicio proceso de creacion de llaves.");
RSAParameters publicKey = cryptoServiceProvider.ExportParameters(false);
//RSAParameters privateKey = cryptoServiceProvider.ExportParameters(true);
//string publicKey = cryptoServiceProvider.ToXmlString(false);
FileWriter.WriteOnEvents(EventLevel.Info, "Proceso de creacion de llaves RSA exitoso.");
string publicKeyString = GetStringFromKey(publicKey, pathPublicKey);
//string privateKeyString = GetStringFromKey(privateKey);
rsaModel.PublicKey = publicKeyString;
}
catch (System.Exception ex)
{
FileWriter.WriteOnEvents(EventLevel.Exception, "Error generando llaves RSA. " + ex.Message);
}
return(rsaModel);
}
public void GenerateNewRSA(int bitSize)
{
UiServices.SetBusyState();
RSAModel = new RSAModel(bitSize);
Paragraph paragraph = new Paragraph();
paragraph.Inlines.Add(new Bold(new Underline(new Run("** " + Languages.buttonGenerateNewCryptosystem + " **\r\n"))));
paragraph.Inlines.Add(new Bold(new Run(Languages.labelPrimeP)));
paragraph.Inlines.Add(" " + PrimP + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelPrimeQ)));
paragraph.Inlines.Add(" " + PrimQ + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelModulus)));
paragraph.Inlines.Add(" " + ModulusN + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelPrivateExponentD)));
paragraph.Inlines.Add(" " + ExpD + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelPublicExponentE)));
paragraph.Inlines.Add(" " + ExpE + "\r\n");
if (History.Document.Blocks.FirstBlock != null)
{
History.Document.Blocks.InsertBefore(History.Document.Blocks.FirstBlock, paragraph);
}
else
{
History.Document.Blocks.Add(paragraph);
}
NotifyPropertyChanged("PrimP");
NotifyPropertyChanged("PrimQ");
NotifyPropertyChanged("ModulusN");
NotifyPropertyChanged("ExpD");
NotifyPropertyChanged("ExpE");
NotifyPropertyChanged("ValidationInfo");
}
///Generation RSA Keys
public string GeneratePubPrivKeys(string partnerKeys, string publicKeyFile)
{
RSAModel rsaModel = new RSAModel();
FileWriter.WriteOnEvents(EventLevel.Info, "Verificando la existencia de la llave a generar.");
if (KeysPartnerExists(partnerKeys, publicKeyFile))
{
DeleteKeysPartner(partnerKeys);
}
rsaModel = GenerateOwnkeyEncrypts(partnerKeys, publicKeyFile);
return(rsaModel.PublicKey);
}
public void Cryptanalysis()
{
UiServices.SetBusyState();
Paragraph paragraph = new Paragraph();
try
{
paragraph.Inlines.Add(new Bold(new Underline(new Run("** " + Languages.buttonCryptanalysis + " **\r\n"))));
paragraph.Inlines.Add(new Bold(new Run(Languages.labelCiphertext)));
paragraph.Inlines.Add(" " + Cipher + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelKnownPlainText)));
paragraph.Inlines.Add(" " + KnownMessage + "\r\n");
string left = message.Substring(0, unknownStart);
string right = message.Substring(unknownStart + unknownLength);
UnknownMessageResult = RSAModel.StereotypedAttack(left, right, unknownLength, cipher, "4");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelResultUnknownPlainText)));
paragraph.Inlines.Add(" " + UnknownMessageResult + "\r\n");
}
catch (Exception ex)
{
UnknownMessageResult = "";
paragraph.Inlines.Add(new Bold(new Run(Languages.labelAbort)));
paragraph.Inlines.Add(" " + ex.Message + "\r\n");
MessageBox.Show(ex.Message, Languages.error, MessageBoxButton.OK, MessageBoxImage.Error);
}
finally
{
if (History.Document.Blocks.FirstBlock != null)
{
History.Document.Blocks.InsertBefore(History.Document.Blocks.FirstBlock, paragraph);
}
else
{
History.Document.Blocks.Add(paragraph);
}
}
}
public void Decrypt()
{
UiServices.SetBusyState();
Message = RSAModel.Decrypt(cipher);
Paragraph paragraph = new Paragraph();
paragraph.Inlines.Add(new Bold(new Underline(new Run("** " + Languages.buttonDecrypt + " **\r\n"))));
paragraph.Inlines.Add(new Bold(new Run(Languages.labelCiphertext)));
paragraph.Inlines.Add(" " + Cipher + "\r\n");
paragraph.Inlines.Add(new Bold(new Run(Languages.labelPlainText)));
paragraph.Inlines.Add(" " + Message + "\r\n");
if (History.Document.Blocks.FirstBlock != null)
{
History.Document.Blocks.InsertBefore(History.Document.Blocks.FirstBlock, paragraph);
}
else
{
History.Document.Blocks.Add(paragraph);
}
NotifyPropertyChanged("Message");
}
