/// <summary>
/// Performs k many 1-out-of-2 OTs on k bits for the receiver, where k is the security parameter, using the base OT implementation.
///
/// These are subsequently expanded into m many 1oo2 OTs on arbitrarily long messages
/// by the ReceiveAsync method, where m is only bounded by the amount of secure randomness the random
/// oracle implementation can produce.
/// </summary>
public async Task ExecuteReceiverBaseOTAsync()
{
_receiverState = new ReceiverState();
// generating _securityParameter many pairs of random seeds of length _securityParameter
Pair <byte[]>[] seeds = new Pair <byte[]> [SecurityParameter];
for (int k = 0; k < SecurityParameter; ++k)
{
seeds[k] = new Pair <byte[]>(
RandomNumberGenerator.GetBits(SecurityParameter).ToBytes(),
RandomNumberGenerator.GetBits(SecurityParameter).ToBytes()
);
}
// base OTs as _sender_ with the seeds as inputs
int requiredBytes = BitArray.RequiredBytes(SecurityParameter);
Task sendTask = _baseOT.SendAsync(seeds, SecurityParameter, requiredBytes);
// initializing a random oracle based on each seed
_receiverState.SeededRandomOracles = new Pair <IEnumerable <byte> > [SecurityParameter];
for (int k = 0; k < SecurityParameter; ++k)
{
_receiverState.SeededRandomOracles[k] = new Pair <IEnumerable <byte> >(
RandomOracleProvider.Create().Invoke(seeds[k][0]),
RandomOracleProvider.Create().Invoke(seeds[k][1])
);
}
;
await sendTask;
}
public Task SendAsync(Pair <Bit>[] correlationBits, int numberOfInvocations)
{
return(_generalOt.SendAsync(ConvertOptionBitsToBytes(correlationBits), numberOfInvocations, 1));
}
