//private void BtnDecrypt_Loaded(object sender, RoutedEventArgs e)
//{
// if (String.IsNullOrEmpty(textBoxDecryptInputFile.Text) || String.IsNullOrEmpty(textBoxDecryptOutputFile.Text)
// || String.IsNullOrEmpty(PasswordDecrypt.Password) || ComboBoxRecipient.ItemsSource == null)
// DecryptBtn.IsEnabled = false;
// else
// DecryptBtn.IsEnabled = true;
//}
//private void BtnDecrypt_Loaded(object sender, SelectionChangedEventArgs e)
//{
// var who = ComboBoxRecipient.SelectedItem as Recipient;
// if (who != null)
// {
// inputKeyFile = @".\prywatne\" + who.Name;
// }
//}
private byte[] RSADecrypt(byte[] toDecrypt)
{
AsymmetricKeyParameter keyPriv;
var bytesToDecrypt = toDecrypt;
var sec = new SecureRandom();
PgpSecretKey pgpPriv;
using (Stream sr = File.OpenRead(inputKeyFile))
{
pgpPriv = PGPKey.ImportSecretKey(sr);
}
var pass = PasswordDecrypt.Password.ToCharArray();
try
{
keyPriv = pgpPriv.ExtractPrivateKey(pass).Key;
}
catch
{
keyPriv = null;
}
if (keyPriv == null)
{
byte[] seed = Encoding.UTF8.GetBytes(pass);
var sec2 = new SecureRandom(seed);
var keyParam = new KeyGenerationParameters(sec2, Int32.Parse(metadataDecrypt.KeySize));
var keyGenerator = new CipherKeyGenerator();
keyGenerator.Init(keyParam);
return(keyGenerator.GenerateKey());
}
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
decryptEngine.Init(false, keyPriv);
byte[] decrypted;
try
{
decrypted = decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length);
}
catch
{
var keyParam = new KeyGenerationParameters(sec, Int32.Parse(metadataDecrypt.KeySize));
var keyGenerator = new CipherKeyGenerator();
keyGenerator.Init(keyParam);
return(keyGenerator.GenerateKey());
}
return(decrypted);
}
private AsymmetricKeyParameter readKey(string file)
{
AsymmetricKeyParameter key;
PgpPublicKey pgpPub;
using (Stream sr = File.OpenRead(file))
{
pgpPub = PGPKey.ImportPublicKey(sr);
}
key = pgpPub.GetKey();
return(key);
}
