public byte[] GetResult()
{
var bytesRemaining = _currentByteIndex - _byteIndexProcessedUpTo;
if (bytesRemaining > 0)
{
var remainder = _buffer.AsSpan().Slice(_byteIndexProcessedUpTo, bytesRemaining);
_hashFunction.AddRemainder(remainder);
}
var hash = _hashFunction.GetFinalHashValue();
var buffer = _buffer;
_buffer = Array.Empty <byte>();
ArrayPool <byte> .Shared.Return(buffer);
return(hash);
}
private static byte[] GenerateHashImpl(
ReadOnlySpan <byte> bytes,
IHashFunction hashFunction)
{
var blockSizeBytes = hashFunction.BlockSizeBytes;
var blockCount = bytes.Length / blockSizeBytes;
var remainder = bytes.Length % blockSizeBytes;
for (var blockIndex = 0; blockIndex < blockCount; blockIndex++)
{
var start = blockIndex * blockSizeBytes;
var block = bytes.Slice(start, blockSizeBytes);
hashFunction.AddCompleteBlock(block);
}
if (remainder > 0)
{
hashFunction.AddRemainder(bytes.Slice(bytes.Length - remainder));
}
return(hashFunction.GetFinalHashValue());
}