internal byte[] GenerateSignature(Ed448PrivateKeyParameters privateKey, Ed448PublicKeyParameters publicKey, byte[] ctx)
{
#if PORTABLE
byte[] buf = ToArray();
int count = buf.Length;
#else
byte[] buf = GetBuffer();
int count = (int)Position;
#endif
byte[] signature = new byte[Ed448PrivateKeyParameters.SignatureSize];
privateKey.Sign(Ed448.Algorithm.Ed448, publicKey, ctx, buf, 0, count, signature, 0);
Reset();
return(signature);
}
public virtual byte[] GenerateSignature()
{
if (!forSigning || null == privateKey)
{
throw new InvalidOperationException("Ed448phSigner not initialised for signature generation.");
}
byte[] msg = new byte[Ed448.PrehashSize];
if (Ed448.PrehashSize != prehash.DoFinal(msg, 0, Ed448.PrehashSize))
{
throw new InvalidOperationException("Prehash digest failed");
}
byte[] signature = new byte[Ed448PrivateKeyParameters.SignatureSize];
privateKey.Sign(Ed448.Algorithm.Ed448ph, publicKey, context, msg, 0, Ed448.PrehashSize, signature, 0);
return(signature);
}