public override int Transform(ReadOnlySpan <byte> input, Span <byte> output)
{
int outputCount = 0;
int blockSize = BlockSizeInBytes;
while (input.Length > 0)
{
blockTransform.Transform(FR, FRE);
// TODO: Vectorize
for (int i = 0; i < blockSize; i++)
{
FRE[i] ^= input[i];
}
if (encryption)
{
FRE.AsSpan(0, blockSize).CopyTo(FR.AsSpan());
}
else
{
input.Slice(0, blockSize).CopyTo(FR.AsSpan());
}
FRE.AsSpan(0, blockSize).CopyTo(output);
input = input.Slice(blockSize);
output = output.Slice(blockSize);
outputCount += blockSize;
}
return(outputCount);
}
public override int Transform(ReadOnlySpan <byte> input, Span <byte> output)
{
int outputCount = 0;
int blockSize = blockTransform.BlockSizeInBytes;
while (input.Length >= blockSize)
{
blockTransform.Transform(input.Slice(0, blockSize), output.Slice(0, blockSize));
outputCount += blockSize;
input = input.Slice(blockSize);
output = output.Slice(blockSize);
}
return(outputCount);
}
