private static void RunSecureComputationParty(int startPort, int numberOfParties, int localPartyId, BitArray localInput, BitArray expectedOutput)
{
using (IMultiPartyNetworkSession session = TestNetworkSession.EstablishMultiParty(localPartyId, numberOfParties))
{
using (CryptoContext cryptoContext = CryptoContext.CreateDefault())
{
IObliviousTransfer obliviousTransfer = new NaorPinkasObliviousTransfer(
new SecurityParameters(47, 23, 4, 1, 1),
cryptoContext
);
IMultiplicativeSharing multiplicativeSharing = new ObliviousTransferMultiplicativeSharing(
obliviousTransfer,
cryptoContext
);
GMWSecureComputation computation = new GMWSecureComputation(session, multiplicativeSharing, cryptoContext);
SetIntersectionCircuitRecorder circuitRecorder = new SetIntersectionCircuitRecorder(numberOfParties, localInput.Length);
CircuitBuilder circuitBuilder = new CircuitBuilder();
circuitRecorder.Record(circuitBuilder);
ForwardCircuit circuit = new ForwardCircuit(circuitBuilder.CreateCircuit());
BitArray output = computation.EvaluateAsync(circuit, circuitRecorder.InputMapping, circuitRecorder.OutputMapping, localInput).Result;
CollectionAssert.AreEqual(
expectedOutput,
output,
"Incorrect output {0} (should be {1}).",
output.ToBinaryString(),
expectedOutput.ToBinaryString()
);
}
}
}
public void TestCircuitEvaluation()
{
BitArray[] inputs =
{
BitArray.FromBinaryString("0111010011"),
BitArray.FromBinaryString("1101100010"),
BitArray.FromBinaryString("0111110011")
};
Bit[] sequentialInput = inputs.SelectMany(bits => bits).ToArray();
CircuitBuilder builder = new CircuitBuilder();
SetIntersectionCircuitRecorder setIntersectionCircuitRecorder =
new SetIntersectionCircuitRecorder(inputs.Length, inputs[0].Length);
setIntersectionCircuitRecorder.Record(builder);
Circuit circuit = builder.CreateCircuit();
ForwardCircuit forwardCircuit = new ForwardCircuit(circuit);
ICircuitEvaluator <Bit> evaluator = new LocalCircuitEvaluator();
ReportingBatchCircuitEvaluator <Bit> batchCircuitEvaluator =
new ReportingBatchCircuitEvaluator <Bit>(new BatchCircuitEvaluator <Bit>(evaluator));
BitArray lazyEvaluationOutput = new BitArray(circuit.Evaluate(evaluator, sequentialInput));
BitArray forwardEvaluationOutput = new BitArray(forwardCircuit.Evaluate(batchCircuitEvaluator, sequentialInput));
BitArray expectedEvaluationOutput = BitArray.FromBinaryString("01010000101100");
EnumerableAssert.AreEqual(
expectedEvaluationOutput,
lazyEvaluationOutput
);
EnumerableAssert.AreEqual(
expectedEvaluationOutput,
forwardEvaluationOutput
);
int[] actualBatchSizes = batchCircuitEvaluator.BatchSizes;
int[] expectedBatchSizes = { 10, 10, 9, 9, 8 };
EnumerableAssert.AreEqual(
expectedBatchSizes,
actualBatchSizes
);
}
private static void PerformSecureComputation(IMultiPartyNetworkSession session, BitArray expectedOutput)
{
BitArray localInput = Inputs[session.LocalParty.Id];
using CryptoContext cryptoContext = CryptoContext.CreateDefault();
IObliviousTransfer obliviousTransfer = new NaorPinkasObliviousTransfer(
new SecurityParameters(47, 23, 4, 1, 1),
cryptoContext
);
IMultiplicativeSharing multiplicativeSharing = new ObliviousTransferMultiplicativeSharing(
obliviousTransfer,
cryptoContext
);
SecretSharingSecureComputation computation = new SecretSharingSecureComputation(
session,
multiplicativeSharing,
cryptoContext
);
SetIntersectionCircuitRecorder circuitRecorder = new SetIntersectionCircuitRecorder(
session.NumberOfParties,
localInput.Length
);
CircuitBuilder circuitBuilder = new CircuitBuilder();
circuitRecorder.Record(circuitBuilder);
ForwardCircuit circuit = new ForwardCircuit(circuitBuilder.CreateCircuit());
BitArray actualOutput = computation
.EvaluateAsync(circuit, circuitRecorder.InputMapping, circuitRecorder.OutputMapping, localInput)
.Result;
EnumerableAssert.AreEqual(
expectedOutput,
actualOutput
);
}
