DilithiumSigner
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
namespace Org.BouncyCastle.Pqc.Crypto.Crystals.Dilithium
{
public class DilithiumSigner : IMessageSigner
{
private DilithiumPrivateKeyParameters privKey;
private DilithiumPublicKeyParameters pubKey;
private SecureRandom random;
public void Init(bool forSigning, ICipherParameters param)
{
if (forSigning) {
ParametersWithRandom parametersWithRandom = param as ParametersWithRandom;
if (parametersWithRandom != null) {
privKey = (DilithiumPrivateKeyParameters)parametersWithRandom.Parameters;
random = parametersWithRandom.Random;
} else {
privKey = (DilithiumPrivateKeyParameters)param;
random = null;
}
} else {
pubKey = (DilithiumPublicKeyParameters)param;
random = null;
}
}
public byte[] GenerateSignature(byte[] message)
{
DilithiumEngine engine = privKey.Parameters.GetEngine(random);
byte[] array = new byte[engine.CryptoBytes];
engine.Sign(array, array.Length, message, message.Length, privKey.m_rho, privKey.m_k, privKey.m_tr, privKey.m_t0, privKey.m_s1, privKey.m_s2);
return array;
}
public bool VerifySignature(byte[] message, byte[] signature)
{
return pubKey.Parameters.GetEngine(random).SignOpen(message, signature, signature.Length, pubKey.m_rho, pubKey.m_t1);
}
}
}