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using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Security;
namespace Org.BouncyCastle.Pqc.Crypto.Saber
{
public class SABERKeyPairGenerator
: IAsymmetricCipherKeyPairGenerator
{
private SABERKeyGenerationParameters saberParams;
private int l;
private SecureRandom random;
private void Initialize(
KeyGenerationParameters param)
{
this.saberParams = (SABERKeyGenerationParameters) param;
this.random = param.Random;
this.l = this.saberParams.GetParameters().GetL();
}
private AsymmetricCipherKeyPair GenKeyPair()
{
SABEREngine engine = saberParams.GetParameters().GetEngine();
byte[] sk = new byte[engine.GetPrivateKeySize()];
byte[] pk = new byte[engine.GetPublicKeySize()];
engine.crypto_kem_keypair(pk, sk, random);
SABERPublicKeyParameters pubKey = new SABERPublicKeyParameters(saberParams.GetParameters(), pk);
SABERPrivateKeyParameters privKey = new SABERPrivateKeyParameters(saberParams.GetParameters(), sk);
return new AsymmetricCipherKeyPair(pubKey, privKey);
}
public void Init(KeyGenerationParameters param)
{
this.Initialize(param);
}
public AsymmetricCipherKeyPair GenerateKeyPair()
{
return GenKeyPair();
}
}
}
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