public override void ReceiveEmail(long fromPseudonym, object message, MessageType type)
{
if (type == MessageType.JoinRequest)
{
// Join the protocol.
var distCount = distPseudonyms.Count;
if (distCount == 1)
{
SendEmail(distPseudonyms[0],
new BridgeJoinMessage(Pseudonym, new Zp(Simulator.Prime, Id)),
MessageType.BridgeJoin);
}
else
{
// Secret share my id among all distributors
var shares = ShamirSharing.Share(new Zp(Simulator.Prime, Id),
distCount, Simulator.PolynomialDegree);
Debug.Assert(shares.Count == distCount);
Debug.Assert(Id == ShamirSharing.Reconstruct(shares,
Simulator.PolynomialDegree, Simulator.Prime).Value,
"The secret is not reconstructible! There is probably an overflow in polynomial evaluation of the sharing phase in Shamir sharing.");
for (int i = 0; i < distCount; i++)
{
SendEmail(distPseudonyms[i], new BridgeJoinMessage(Pseudonym, shares[i]), MessageType.BridgeJoin);
}
}
}
else
{
throw new Exception("Invalid email received.");
}
}
//public override void Receive<BrideAssignment>(int fromNode, BrideAssignment message, MessageType type)
//{
// throw new NotImplementedException();
//}
public override void ReceiveEmail(long fromPseudonym, object message, MessageType type)
{
if (type == MessageType.UserAssignments) // From a distributor: Here's a list of bridge id share for you.
{
var assignments = message as List <UserAssignment>;
if (distributorPseudonyms.Count == 1)
{
foreach (var a in assignments)
{
Bridges.Add(Simulator.GetNode <Bridge>((int)a.BridgeShare.Value));
}
}
else
{
foreach (var a in assignments)
{
if (!BridgeShares.ContainsKey(a.BridgePseudonym))
{
BridgeShares[a.BridgePseudonym] = new List <Zp>();
}
BridgeShares[a.BridgePseudonym].Add(a.BridgeShare);
if (BridgeShares[a.BridgePseudonym].Count == distributorPseudonyms.Count)
{
// We have enough number of shares to reconstruct the bridge ID
int bridgeId = (int)ShamirSharing.Reconstruct(BridgeShares[a.BridgePseudonym],
Simulator.PolynomialDegree, Simulator.Prime).Value;
Debug.Assert(Simulator.GetNodes <Bridge>().Any(b => b.Id == bridgeId), "Invalid bridge ID reconstructed from shares.");
Bridges.Add(Simulator.GetNode <Bridge>(bridgeId));
BridgeShares[a.BridgePseudonym] = null;
}
}
}
}
else
{
throw new Exception("Invalid message received.");
}
}
