private IStreamCipher GetStreamCipher(StreamCiphers EngineType, int RoundCount)
{
try
{
return(StreamCipherFromName.GetInstance(EngineType, RoundCount));
}
catch (Exception ex)
{
throw new CryptoProcessingException("CipherStream:GetStreamEngine", ex);
}
}
/// <summary>
/// Get a stream cipher instance with specified initialization parameters
/// </summary>
///
/// <param name="StreamCipherType">The stream cipher enumeration name</param>
/// <param name="RoundCount">The number of cipher rounds</param>
///
/// <returns>An initialized stream cipher</returns>
///
/// <exception cref="CryptoProcessingException">Thrown if the enumeration name is not supported</exception>
public static IStreamCipher GetInstance(StreamCiphers StreamCipherType, int RoundCount = 20)
{
switch (StreamCipherType)
{
case StreamCiphers.ChaCha:
return(new ChaCha20(RoundCount));
case StreamCiphers.Salsa:
return(new Salsa20(RoundCount));
default:
throw new CryptoProcessingException("StreamCipherFromName:GetStreamEngine", "The stream cipher is not recognized!");
}
}
