public Task <PreprocessedReceiverBatch> PreprocessReceiverAsync(IMessageChannel channel, int numberOfInvocations)
{
byte[] randomSelectionIndicesBuffer = _randomNumberGenerator.GetBytes(QuadrupleIndexArray.RequiredBytes(numberOfInvocations));
QuadrupleIndexArray randomSelectionIndices = QuadrupleIndexArray.FromBytes(randomSelectionIndicesBuffer, numberOfInvocations);
return(_obliviousTransfer.ReceiveAsync(channel, randomSelectionIndices, numberOfInvocations)
.ContinueWith(task => new PreprocessedReceiverBatch(randomSelectionIndices, task.Result)));
}
private Task <BitArray> ComputeReceiverSharesAsync(IMessageChannel channel, BitArray leftShares, BitArray rightShares, int numberOfInvocations)
{
QuadrupleIndexArray selectionIndices = new QuadrupleIndexArray(numberOfInvocations);
for (int i = 0; i < numberOfInvocations; ++i)
{
selectionIndices[i] = 2 * (byte)leftShares[i] + (byte)rightShares[i];
}
return(_obliviousTransfer.ReceiveAsync(channel, selectionIndices, numberOfInvocations));
}
