//[InlineData(10, 10)]
public void TestSplitJoin_SameInstance(int shareCount, int threshold)
{
int secretInt;
// using (var rng = RandomNumberGenerator.Create())
// {
// var arr = new byte[sizeof(int)];
// rng.GetBytes(arr);
// secretInt = BitConverter.ToUInt16(arr, 0);
// }
secretInt = 256;
var secret = BitConverter.GetBytes(secretInt);
var ss1 = new TrivialShamirsSecretSharing();
var crypt = ss1.Split(secret, shareCount, threshold);
var shares = ss1.Shares.ToArray();
var ss2 = new TrivialShamirsSecretSharing();
ss2.Shares = shares.Take(threshold);
var clear = ss2.Combine(crypt);
var value = BitConverter.ToInt32(clear, 0);
Assert.Equal(secret, clear);
Assert.Equal(secretInt, value);
}
//[InlineData(10, 10)]
public void TestSplitJoin_FixedValue_SameInstance_CustomInterface(int shareCount, int threshold)
{
var secretInt = 129;
var ss1 = new TrivialShamirsSecretSharing();
var shares = ss1.Split(secretInt, shareCount, threshold);
var joinShares = shares.Take(threshold);
var ss2 = ss1;
var clear = ss2.Join(joinShares.ToArray());
Assert.Equal(secretInt, clear);
}
//[InlineData(10, 10)]
public void TestSplitJoin_FixedValue_SameInstance(int shareCount, int threshold)
{
var secretInt = 129;
var ss1 = new TrivialShamirsSecretSharing();
//var rawShares = ss1.Split(secretInt, shareCount, threshold);
ss1.Split(BitConverter.GetBytes(secretInt), shareCount, threshold);
var shares = ss1.Shares;
var joinShares = shares.Take(threshold);
ss1.Shares = joinShares;
var ss2 = ss1;
var clearInt = ss2.Join();
//var clearInt = BitConverter.ToInt32(clear, 0);
Assert.Equal(secretInt, clearInt);
}
public void TestTrivialFixed_Matches_Trivial(int available, int needed)
{
var sss1 = new TrivialFixedShamirsSecretSharing();
var sss2 = new TrivialShamirsSecretSharing();
var secretInt = 129;
var split1 = sss1.Split(secretInt, available, needed);
var shares1 = split1.Select(x =>
{
var bytes = new byte[sizeof(int) * 2];
Array.Copy(BitConverter.GetBytes(x.Item1), 0, bytes, 0, sizeof(int));
Array.Copy(BitConverter.GetBytes(x.Item2), 0, bytes, sizeof(int), sizeof(int));
return(bytes);
});
var split2 = sss2.Split(secretInt, available, needed);
var shares2 = sss2.Shares;
//Assert.Equal(shares1, shares2);
var rand = new Random();
var indexOrder = split1.OrderBy(x => rand.Next()).Select(x => x.Item1 - 1).Take(needed);
// var joinShares1 = split1.Where(x => indexOrder.Contains(x.Item1));
// var joinShares2 = split2.Where(x => indexOrder.Contains(x.Item1));
var joinShares1 = indexOrder.Select(x => split1.ElementAt(x));
var joinShares2 = indexOrder.Select(x => split2.ElementAt(x));
Console.WriteLine($"Indexes : " + string.Join(",", indexOrder));
Console.WriteLine($"Indexes1: {joinShares1.Count()} " + string.Join(",", joinShares1.Select(x => x.Item1 - 1)));
Console.WriteLine($"Indexes2: {joinShares2.Count()} " + string.Join(",", joinShares2.Select(x => x.Item1 - 1)));
var join1 = sss1.Join(joinShares1.ToList());
var join2 = sss2.Join(joinShares2.ToArray());
Assert.Equal(secretInt, join1);
// Assert.Equal(join1, join2);
}
