public Ed25519PublicKeyParameters GeneratePublicKey()
{
lock (data)
{
if (null == cachedPublicKey)
{
byte[] publicKey = new byte[Ed25519.PublicKeySize];
Ed25519.GeneratePublicKey(data, 0, publicKey, 0);
cachedPublicKey = new Ed25519PublicKeyParameters(publicKey, 0);
}
return(cachedPublicKey);
}
}
public void Sign(Ed25519.Algorithm algorithm, Ed25519PublicKeyParameters publicKey, byte[] ctx, byte[] msg, int msgOff, int msgLen,
byte[] sig, int sigOff)
{
byte[] pk = new byte[Ed25519.PublicKeySize];
if (null == publicKey)
{
Ed25519.GeneratePublicKey(data, 0, pk, 0);
}
else
{
publicKey.Encode(pk, 0);
}
switch (algorithm)
{
case Ed25519.Algorithm.Ed25519:
{
if (null != ctx)
{
throw new ArgumentException("ctx");
}
Ed25519.Sign(data, 0, pk, 0, msg, msgOff, msgLen, sig, sigOff);
break;
}
case Ed25519.Algorithm.Ed25519ctx:
{
Ed25519.Sign(data, 0, pk, 0, ctx, msg, msgOff, msgLen, sig, sigOff);
break;
}
case Ed25519.Algorithm.Ed25519ph:
{
if (Ed25519.PrehashSize != msgLen)
{
throw new ArgumentException("msgLen");
}
Ed25519.SignPrehash(data, 0, pk, 0, ctx, msg, msgOff, sig, sigOff);
break;
}
default:
{
throw new ArgumentException("algorithm");
}
}
}
public void Sign(Ed25519.Algorithm algorithm, Ed25519PublicKeyParameters publicKey, byte[] ctx, byte[] msg, int msgOff, int msgLen,
byte[] sig, int sigOff)
{
Sign(algorithm, ctx, msg, msgOff, msgLen, sig, sigOff);
}