public static RingCTSignatureType Generate(List <CTCommitment> inSK, List <MixRingCTKey> inPK, List <ECPoint> destinations, List <Fixed8> amounts, Fixed8 vPub, int mixin, UInt256 assetID, Fixed8 vPubOld)
{
RingCTSignatureType rctSig = new RingCTSignatureType();
List <CTCommitment> outSK = new List <CTCommitment>();
for (int i = 0; i < destinations.Count; i++)
{
rctSig.outPK.Add(new CTKey());
rctSig.rangeSigs.Add(new RangeProveType());
rctSig.ecdhInfo.Add(new EcdhTuple());
}
for (int i = 0; i < destinations.Count; i++)
{
rctSig.outPK[i].dest = destinations[i];
rctSig.rangeSigs[i] = RangeSignature.Generate(amounts[i]);
rctSig.outPK[i].mask = rctSig.rangeSigs[i].C;
CTCommitment outSK_i = new CTCommitment(new byte[32], rctSig.rangeSigs[i].mask);
outSK.Add(outSK_i);
rctSig.ecdhInfo[i].mask = rctSig.rangeSigs[i].mask;
rctSig.ecdhInfo[i].amount = amounts[i].ToBinaryFormat().ToBinary();
bool isEncoded = true;
if (rctSig.ecdhInfo.Count > 1)
{
isEncoded = false;
}
for (int j = 0; j < inSK.Count; j++)
{
byte[] dest_cmp = new byte[32];
if (inSK[j].dest.ToHexString() == dest_cmp.ToHexString() && inSK[j].mask.ToHexString() == dest_cmp.ToHexString())
{
isEncoded = false;
}
}
if (isEncoded)
{
rctSig.ecdhInfo[i] = rctSig.ecdhInfo[i].EcdhEncode(destinations[i]);
}
}
RingInfo ringInfo = PopulateFromBlockchain(inPK, mixin, assetID, vPubOld);
rctSig.mixRing = ringInfo.mixRingIndex;
rctSig.MG = ProveRctMG(ringInfo.mixRing, inSK, outSK, rctSig.outPK, vPub, ringInfo.index);
rctSig.vPub = vPub;
return(rctSig);
}
public static bool Verify(RingCTSignatureType sig, Fixed8 vPubOld)
{
bool result = true;
if (sig.rangeSigs.Count <= 0 || sig.ecdhInfo.Count <= 0 || sig.mixRing.Count <= 0)
{
return(false);
}
for (int i = 0; i < sig.outPK.Count; i++)
{
bool rangeVerify = RangeSignature.Verify(sig.outPK[i].mask, sig.rangeSigs[i].rangeSig);
result = result && rangeVerify;
}
List <List <CTKey> > mixRing = GetRingKeyFromIndex(sig.mixRing, vPubOld);
bool mgVer = VerRctMG(sig.MG, mixRing, sig.outPK, sig.vPub);
return(result && mgVer);
}
