public void CouldHashIncrementalCorrectness()
{
Console.WriteLine("Context size: " + Unsafe.SizeOf <Blake2bContext>());
var steps = TestUtils.GetBenchCount(20_000, 10);
var incrSize = 1;
var rng = new Random(42);
var byteLength = incrSize * steps;
var rmb = BufferPool.Retain((int)byteLength);
var bytes = new DirectBuffer(rmb);
rmb.TryGetArray(out var segment);
rng.NextBytes(segment.Array);
Console.WriteLine("Filled bytes");
var hashLength = 32;
NSec.Cryptography.Blake2b b = default;
if (hashLength == 32)
{
b = HashAlgorithm.Blake2b_256;
}
else if (hashLength == 64)
{
b = HashAlgorithm.Blake2b_512;
}
else
{
Assert.Fail("hashLength != 32 || 64");
}
var hash0 = new byte[hashLength];
var hash1 = new byte[hashLength];
var hash2 = new byte[hashLength];
var rounds = 1;
for (int r = 0; r < rounds; r++)
{
var ctx = Blake2b.CreateIncrementalHasher(hashLength);
var sp = bytes.Span;
for (int i = 0; i < steps; i++)
{
var incrSpan = bytes.Slice(i * incrSize, incrSize);
var runningBuff = bytes.Slice(0, i * incrSize + incrSize);
var runningSpan = sp.Slice(0, i * incrSize + incrSize);
// Incremental Spreads
ctx.UpdateHash(incrSpan, hash0);
// Running Spreads
Blake2b.ComputeAndWriteHash(hashLength, runningBuff, hash1);
// Libsodium
b.Hash(runningSpan, hash2);
Assert.IsTrue(hash0.SequenceEqual(hash1), "hash0.SequenceEqual(hash1)");
Assert.IsTrue(hash0.SequenceEqual(hash2), "hash0.SequenceEqual(hash2)");
if (i % 10000 == 0)
{
Console.WriteLine($"Round {r}, Iteration {i}");
}
}
}
rmb.Dispose();
}
public void CouldHash()
{
var hashLength = 32;
#if NETCOREAPP3_0
NSec.Cryptography.Blake2b b = default;
if (hashLength == 32)
{
b = HashAlgorithm.Blake2b_256;
}
else if (hashLength == 64)
{
b = HashAlgorithm.Blake2b_512;
}
else
{
Assert.Fail("hashLength != 32 || 64");
}
#endif
var rng = new Random();
var size = 48;
var rmb = BufferPool.Retain(size);
var bytes = new DirectBuffer(rmb);
rmb.TryGetArray(out var segment);
var hash0 = new byte[hashLength];
var hash1 = new byte[hashLength];
var count = TestUtils.GetBenchCount(1000_000);
var rounds = 10;
// warm up
for (int i = 0; i < count / 10; i++)
{
Blake2b.ComputeAndWriteHash(hashLength, bytes, hash0);
}
#if NETCOREAPP3_0
for (int i = 0; i < count / 10; i++)
{
b.Hash(bytes.Span, hash1);
}
#endif
// var ctx = Blake2b.CreateIncrementalHasher(32);
for (int r = 0; r < rounds; r++)
{
rng.NextBytes(segment.Array);
using (Benchmark.Run("Spreads (MBsec)", count * size, false))
{
for (int i = 0; i < count; i++)
{
Blake2b.ComputeAndWriteHash(hashLength, bytes, hash0);
}
}
#if NETCOREAPP3_0
using (Benchmark.Run("Libsodium (MBsec)", count * size, false))
{
for (int i = 0; i < count; i++)
{
b.Hash(bytes.Span, hash1);
}
}
Assert.IsTrue(hash0.SequenceEqual(hash1));
#endif
}
Benchmark.Dump();
rmb.Dispose();
}
public void CouldHashIncrementalBench()
{
Console.WriteLine("Context size: " + Unsafe.SizeOf <Blake2bContext>());
var steps = TestUtils.GetBenchCount(50_000, 2);
var incrSize = 64;
var rng = new Random(42);
var byteLength = incrSize * steps;
var rmb = BufferPool.Retain((int)byteLength);
var bytes = new DirectBuffer(rmb);
rmb.TryGetArray(out var segment);
rng.NextBytes(segment.Array);
var hashLength = 32;
NSec.Cryptography.Blake2b b = default;
if (hashLength == 32)
{
b = HashAlgorithm.Blake2b_256;
}
else if (hashLength == 64)
{
b = HashAlgorithm.Blake2b_512;
}
else
{
Assert.Fail("hashLength != 32 || 64");
}
// var size = 32L;
var hash0 = new byte[hashLength];
var hash1 = new byte[hashLength];
var rounds = 50;
// warm up
{
Blake2b.ComputeAndWriteHash(hashLength, bytes, hash0);
}
{
b.Hash(bytes.Span, hash1);
}
for (int r = 0; r < rounds; r++)
{
using (var stat = Benchmark.Run("Spreads (MBsec)", byteLength, false))
{
// for (int rr = 0; rr < 100; rr++)
{
var ctx = Blake2b.CreateIncrementalHasher(hashLength);
var sp = bytes.Span;
for (int i = 0; i < steps; i++)
{
var slice = bytes.Slice(i * incrSize, incrSize);
ctx.UpdateHash(slice, hash0);
}
}
}
//using (var stat = Benchmark.Run("Libsodium (MBsec)", byteLength, false))
//{
// var sp = bytes.Span;
// for (int i = 0; i < steps; i++)
// {
// var span = sp.Slice(0, i * incrSize + incrSize);
// b.Hash(span, hash1);
// }
//}
//Assert.IsTrue(hash0.SequenceEqual(hash1), "Different hash vs LibSodium");
}
Benchmark.Dump($"Incremental hashing by {incrSize} bytes {steps} times");
rmb.Dispose();
}