private void InitPolyCommit()
{
if (Size > 0)
{
PolyCommit = new PolyCommit();
PolyCommit.Setup((int)Math.Ceiling(Size / 3.0), Seed);
}
}
private void InitPolyCommit()
{
if (Size > 0)
{
PolyCommit = new PolyCommit();
PolyCommit.Setup((int)Math.Ceiling(Size / 3.0), Seed);
}
}
public ShareRenewalRound(Party me, Quorum quorumFrom, Quorum quorumTo, BigZp[] startShares, BigInteger prime, int startSharesPerParty, int finalSharesPerParty, ulong protocolId)
: base(me, new Quorum[] { quorumFrom, quorumTo }, protocolId)
{
FinalSharesPerParty = finalSharesPerParty;
StartSharesPerParty = startSharesPerParty;
StartShares = startShares;
Prime = prime;
ReceivedReshareCount = 0;
foreach (var from in Quorums[0].Members)
{
sharesRecv[from] = new List <ShareWitnessMsg <BigZp> > [startSharesPerParty];
for (int i = 0; i < startSharesPerParty; i++)
{
numCommitsRecv[from] = 0;
sharesRecv[from][i] = new List <ShareWitnessMsg <BigZp> >();
}
}
StartShareCount = Quorums[FROM].Size * StartSharesPerParty;
FinalShareCount = Quorums[TO].Size * FinalSharesPerParty;
NewPolyDeg = (int)Math.Ceiling(FinalShareCount / 3.0) - 1;
VandermondeInv = StaticCache.GetVandermondeInvColumn(Prime, StartShareCount);
if (Quorums[TO].HasMember(Me.Id))
{
var quorumIter = Quorums[TO].Members.GetEnumerator();
int i = 0;
while (quorumIter.MoveNext())
{
if (Me.Id == quorumIter.Current)
{
MyQuorumIndex = i;
break;
}
i++;
}
}
if (Quorums[TO] is ByzantineQuorum)
{
var byzTo = Quorums[TO] as ByzantineQuorum;
if (FinalShareCount == Quorums[TO].Size)
{
PolyCommit = byzTo.PolyCommit;
}
else
{
PolyCommit = new PolyCommit();
PolyCommit.Setup(NewPolyDeg + 1, byzTo.Seed);
}
}
}
public static MG GenerateCommitment(int numShares, BigZp[] coeffs, BigInteger prime, ref MG[] witnesses, PolyCommit polyCommit)
{
var iz = new BigZp[numShares];
for (int i = 0; i < numShares; i++)
{
iz[i] = new BigZp(prime, new BigInteger(i + 1));
}
byte[] proof = null;
MG commitment = polyCommit.Commit(coeffs, iz, ref witnesses, ref proof, false);
return commitment;
}
public RandGenProtocol(Party me, Quorum quorum, BigZp myRandom, BigInteger prime)
: base(me, quorum)
{
MyRandom = myRandom;
Prime = prime;
PolyDegree = (int)Math.Ceiling(Quorum.Size / 3.0) - 1;
if (Quorum is ByzantineQuorum)
{
PolyCommit = (Quorum as ByzantineQuorum).PolyCommit;
}
CombinedShare = new BigZp(Prime);
}
public SharingProtocol(Party me, int srcParty, Quorum dstQuorum, BigZp secret, BigInteger prime, ulong protocolId)
: base(me, QuorumPlusParty(dstQuorum, srcParty), protocolId)
{
Prime = prime;
Secret = secret;
SrcParty = srcParty;
DstQuorum = dstQuorum;
if (dstQuorum is ByzantineQuorum)
{
PolyCommit = ((ByzantineQuorum)dstQuorum).PolyCommit;
}
PolyDegree = (int)Math.Ceiling(DstQuorum.Size / 3.0) - 1;
}
public static MG GenerateCommitment(int numShares, BigZp[] coeffs, BigInteger prime, ref MG[] witnesses, PolyCommit polyCommit)
{
var iz = new BigZp[numShares];
for (int i = 0; i < numShares; i++)
{
iz[i] = new BigZp(prime, new BigInteger(i + 1));
}
byte[] proof = null;
MG commitment = polyCommit.Commit(coeffs, iz, ref witnesses, ref proof, false);
return(commitment);
}
