private void GenerateKeypair(int size)
{
GenerateKeysButton.Enabled = false;
Task.Run(AnimateGeneratingText);
SetRSAParameters(MicrosoftRSA.GenerateKeyPair(size));
GenerateKeysButton.Enabled = true;
}
private IBlockCipher GetBlockCipher(MicrosoftRSA rsa)
{
BigInteger?initializationVector = GetInitializationVector();
return(initializationVector.HasValue
? new CipherBlockChaining(rsa, initializationVector.Value)
: GetBlockCipherWithoutInitializationVector(rsa));
}
private ImageBlockCipher GetImageBlockCipher(RSAParameters parameters)
{
MicrosoftRSA rsa = new MicrosoftRSA(parameters);
IBlockCipher blockCipher = GetBlockCipher(rsa);
ImageBlockCipher imageBlockCipher = new ImageBlockCipher(blockCipher);
return(imageBlockCipher);
}
private IBlockCipher GetBlockCipherWithoutInitializationVector(MicrosoftRSA rsa)
{
switch (blockCipherMethod)
{
case BlockCipherMethod.ElectronicCodebook:
return(new ElectronicCodebook(rsa));
case BlockCipherMethod.CipherBlockChaining:
var cbc = new CipherBlockChaining(rsa);
InitializationVectorTextBox.Text = cbc.InitializationVector.ToString();
return(cbc);
default:
throw new ArgumentOutOfRangeException();
}
}