public byte[] Calculate(IAsymmetricPublicKey publicKey)
{
General.Utils.ApprovedModeCheck("service", algDetails.Algorithm);
byte[] receivedKey = ((AsymmetricNHPublicKey)publicKey).GetKeyData();
byte[] sharedKey = new byte[NewHopeImpl.AgreementSize];
NewHopeImpl.SharedA(sharedKey, privateKey.privateKeyData, receivedKey);
return(sharedKey);
}
public override AsymmetricKeyPair <AsymmetricNHPublicKey, AsymmetricNHPrivateKey> GenerateKeyPair()
{
General.Utils.ApprovedModeCheck("generator", Alg);
byte[] send = new byte[NewHopeImpl.SendABytes];
ushort[] secret = new ushort[NewHopeImpl.PolySize];
NewHopeImpl.KeyGen(random, send, secret);
return(new AsymmetricKeyPair <AsymmetricNHPublicKey, AsymmetricNHPrivateKey>(
new AsymmetricNHPublicKey(send), new AsymmetricNHPrivateKey(secret)));
}
public ExchangePair GenerateExchange(IAsymmetricPublicKey otherKey)
{
General.Utils.ApprovedModeCheck("generator", Alg);
byte[] ourSharedKey = new byte[NewHopeImpl.AgreementSize];
byte[] ourSend = new byte[NewHopeImpl.SendBBytes];
AsymmetricNHPublicKey publicKey = (AsymmetricNHPublicKey)otherKey;
NewHopeImpl.SharedB(random, ourSharedKey, ourSend, publicKey.GetKeyData());
return(new ExchangePair(new AsymmetricNHPublicKey(ourSend), ourSharedKey));
}
