private (Bn128Fp, Bn128Fp2) DecodePair(byte[] input, int offset)
{
byte[] x = input.Slice(offset + 0, 32);
byte[] y = input.Slice(offset + 32, 32);
Bn128Fp p1 = Bn128Fp.CreateInG1(x, y);
// fail if point is invalid
if (p1 == null)
{
return(null, null);
}
// (b, a)
byte[] b = input.Slice(offset + 64, 32);
byte[] a = input.Slice(offset + 96, 32);
// (d, c)
byte[] d = input.Slice(offset + 128, 32);
byte[] c = input.Slice(offset + 160, 32);
Bn128Fp2 p2 = Bn128Fp2.CreateInG2(a, b, c, d);
// fail if point is invalid
if (p2 == null)
{
return(null, null);
}
return(p1, p2);
}
public (byte[], bool) Run(byte[] inputData)
{
if (inputData == null)
{
inputData = Bytes.Empty;
}
if (inputData.Length < 96)
{
inputData = inputData.PadRight(96);
}
byte[] x = inputData.Slice(0, 32);
byte[] y = inputData.Slice(32, 32);
byte[] s = inputData.Slice(64, 32);
Bn128Fp p = Bn128Fp.Create(x, y);
if (p == null)
{
return(Bytes.Empty, false);
}
Bn128Fp res = p.Mul(s.ToUnsignedBigInteger()).ToEthNotation();
return(EncodeResult(res.X.GetBytes(), res.Y.GetBytes()), true);
}
public void Zero_reused()
{
Bn128Fp p1 = Bn128Fp.Create(new byte[] { 0 }, new byte[] { 0 });
// ReSharper disable once EqualExpressionComparison
Assert.True(ReferenceEquals(p1.Zero, p1.Zero));
}
public void Equals_works_with_nulls()
{
Bn128Fp bn128Fp = new Bn128Fp(1, 1, 1);
Assert.False(bn128Fp == null, "null to the right");
Assert.False(null == bn128Fp, "null to the left");
Assert.True((Bn128Fp)null == null, "null both sides");
}
public (byte[], bool) Run(byte[] inputData)
{
Metrics.Bn128AddPrecompile++;
if (inputData == null)
{
inputData = Bytes.Empty;
}
if (inputData.Length < 128)
{
inputData = inputData.PadRight(128);
}
byte[] x1 = inputData.Slice(0, 32);
byte[] y1 = inputData.Slice(32, 32);
byte[] x2 = inputData.Slice(64, 32);
byte[] y2 = inputData.Slice(96, 32);
Bn128Fp p1 = Bn128Fp.Create(x1, y1);
if (p1 == null)
{
return(Bytes.Empty, false);
}
Bn128Fp p2 = Bn128Fp.Create(x2, y2);
if (p2 == null)
{
return(Bytes.Empty, false);
}
Bn128Fp res = p1.Add(p2).ToEthNotation();
return(EncodeResult(res.X.GetBytes(), res.Y.GetBytes()), true);
}
public void Zero_initializes()
{
Bn128Fp p1 = Bn128Fp.Create(new byte[] { 0 }, new byte[] { 0 });
Assert.NotNull(p1.Zero);
}
