// Test of signing and verifying using test vectors
// http://ed25519.cr.yp.to/python/sign.input
internal static void Test()
{
using (var reader = new System.IO.StreamReader(@"sign.input")) {
int skip = 0;
int count = 0;
while (true)
{
string line = reader.ReadLine();
if (line == null)
{
break;
}
count++;
if (count <= skip)
{
continue;
}
System.Diagnostics.Debug.WriteLine("Line {0}", count);
string[] w = line.Split(':');
byte[][] b = w.Select(s => BigIntegerConverter.ParseHex(s)).ToArray();
byte[] privateKey = new byte[32];
Buffer.BlockCopy(b[0], 0, privateKey, 0, 32);
byte[] publicKey = b[1];
byte[] message = b[2];
byte[] signature = new byte[64];
Buffer.BlockCopy(b[3], 0, signature, 0, 64);
CurveEd25519 curve = new CurveEd25519();
byte[] sig;
if (!curve.Sign(privateKey, message, out sig))
{
throw new Exception("signing failed");
}
if (sig.Length != signature.Length)
{
throw new Exception("invalid sign length");
}
for (int i = 0; i < signature.Length; ++i)
{
if (sig[i] != signature[i])
{
throw new Exception("signs doesn't match");
}
}
if (!curve.Verify(publicKey, signature, message))
{
throw new Exception("verification failed");
}
}
}
}
public static EdwardsCurve FindByName(string name)
{
EdwardsCurve curve;
if (_curveDict.TryGetValue(name, out curve))
{
return(curve);
}
switch (name)
{
case "edwards25519":
curve = new CurveEd25519();
break;
default:
// unknown curve
return(null);
}
_curveDict.TryAdd(name, curve);
return(curve);
}
public static EdwardsCurve FindByName(string name)
{
EdwardsCurve curve;
if (_curveDict.TryGetValue(name, out curve)) {
return curve;
}
switch (name) {
case "edwards25519":
curve = new CurveEd25519();
break;
default:
// unknown curve
return null;
}
_curveDict.TryAdd(name, curve);
return curve;
}
