public void Sign(Ed448.Algorithm algorithm, byte[] ctx, byte[] msg, int msgOff, int msgLen,
byte[] sig, int sigOff)
{
Ed448PublicKeyParameters publicKey = GeneratePublicKey();
byte[] pk = new byte[Ed448.PublicKeySize];
publicKey.Encode(pk, 0);
switch (algorithm)
{
case Ed448.Algorithm.Ed448:
{
Ed448.Sign(data, 0, pk, 0, ctx, msg, msgOff, msgLen, sig, sigOff);
break;
}
case Ed448.Algorithm.Ed448ph:
{
if (Ed448.PrehashSize != msgLen)
{
throw new ArgumentException("msgLen");
}
Ed448.SignPrehash(data, 0, pk, 0, ctx, msg, msgOff, sig, sigOff);
break;
}
default:
{
throw new ArgumentException("algorithm");
}
}
}
public Ed448PublicKeyParameters GeneratePublicKey()
{
lock (data)
{
if (null == cachedPublicKey)
{
byte[] publicKey = new byte[Ed448.PublicKeySize];
Ed448.GeneratePublicKey(data, 0, publicKey, 0);
cachedPublicKey = new Ed448PublicKeyParameters(publicKey, 0);
}
return(cachedPublicKey);
}
}
public void Sign(Ed448.Algorithm algorithm, Ed448PublicKeyParameters publicKey, byte[] ctx, byte[] msg, int msgOff, int msgLen,
byte[] sig, int sigOff)
{
Sign(algorithm, ctx, msg, msgOff, msgLen, sig, sigOff);
}