public static void TestParityPacker()
{
//const int randomCount = 518387;
//const int randomCount = 524288;
//const int randomCount = 1024*4+2+1;
//const int randomCount = 1024*32 *2;
const int randomCount = 518387;
//Func<string, byte[]> utf8b = Encoding.GetBytesUTF8;
byte[][] input =
{
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
General.GetWeakPseudoRandomBytes(randomCount + General.GetWeakPseudoRandomBytes(1)[0]),
};
byte[][] parity = Parity.CreateParity(input, 10);
logger.Log("");
/*
* foreach (var x in input.Select(y => y.GetStringUTF8()))
* Console.WriteLine (x);
* foreach (var x in parity.Select(y => y.ToHexString()))
* Console.WriteLine (x);*/
foreach (var x in input)
{
logger.Log(x.SHA256().ToHexString().Substring(0, 5) + " " + x.Length); //+ " " + x.GetStringUTF8());
}
foreach (var x in parity)
{
logger.Log(x.SHA256().ToHexString().Substring(0, 5) + " " + x.Length); // + " " + x.ToHexString());
}
Func <byte[][], Parity.ParityInfo[]> genTuples = (datas) =>
{
Parity.ParityInfo[] tuples = new Parity.ParityInfo[datas.Length];
for (int i = 0; i < tuples.Length; i++)
{
tuples[i] = new Parity.ParityInfo()
{
Broken = false,
RealLength = (uint)datas[i].Length,
Data = datas[i]
};
}
return(tuples);
};
Parity.ParityInfo[] data_tuples = genTuples(input);
Parity.ParityInfo[] parity_tuples = genTuples(parity);
Action <int, Parity.ParityInfo[]> breakTuple = (index, tuples) =>
{
tuples[index].Broken = true;
tuples[index].Data = null;
};
for (int i = 0; i < parity.Length - 3; i++)
{
breakTuple(i, parity_tuples);
}
breakTuple(2, data_tuples);
//breakTuple (3, data_tuples);
breakTuple(1, data_tuples);
logger.Log("repair");
var success = Parity.RepairWithParity(ref data_tuples, ref parity_tuples);
logger.Log("");
if (!success)
{
Assert.Fail("Could not repair with parity!");
return;
}
foreach (var x in data_tuples)
{
logger.Log(x.Data.SHA256().ToHexString().Substring(0, 5) + " " + x.Data.Length); // + " " + x.Data.GetStringUTF8());
}
foreach (var x in parity_tuples)
{
logger.Log(x.Data.SHA256().ToHexString().Substring(0, 5) + " " + x.Data.Length); // + " " + x.Data.ToHexString());
}
Assert.True(data_tuples.Length == input.Length);
Assert.True(parity_tuples.Length == parity.Length);
for (var i = 0; i < input.Length; i++)
{
Assert.True(input[i].SHA256().ToHexString() == data_tuples[i].Data.SHA256().ToHexString());
}
for (var i = 0; i < parity.Length; i++)
{
Assert.True(parity[i].SHA256().ToHexString() == parity_tuples[i].Data.SHA256().ToHexString());
}
}