public Blake2Hmac(Algorithm hashAlg, int hashBytes, ReadOnlySpan <byte> key)
{
alg = hashAlg;
HashSizeValue = hashBytes * 8;
HashName = alg.ToString();
if (key.Length > 0)
{
KeyValue = key.ToArray();
}
impl = createIncrementalInstance();
}
public Blake2Hmac(Algorithm hashAlg, int hashBytes, ReadOnlySpan <byte> key)
{
alg = hashAlg;
HashSizeValue = hashBytes * 8;
HashName = alg.ToString();
if (key.Length > 0)
#if NETSTANDARD1_3
{ base.Key = key.ToArray(); }
#else
{ KeyValue = key.ToArray(); }
#endif
impl = createIncrementalInstance();
}
private static ReadOnlySpan <byte> compute(IBlake2Incremental impl, ReadOnlySpan <byte> data)
{
// every read and write after this will be unaligned
if (tryReadAndAdvance(out byte byteVal, ref data))
{
impl.Update(byteVal);
}
// an enum (int) value
if (tryReadAndAdvance(out DateTimeKind enumVal, ref data))
{
impl.Update(enumVal);
}
// advance to just shy of a block boundary to make sure we split a value across blocks sometimes
if (data.Length >= sizeof(long) * 15)
{
impl.Update(MemoryMarshal.Cast <byte, long>(data.Slice(0, sizeof(long) * 15)));
data = data.Slice(sizeof(long) * 15);
}
// a non-blittable value type
if (tryReadAndAdvance(out Guid guidVal, ref data))
{
impl.Update(guidVal);
}
// a custom struct with a static ref field
if (tryReadAndAdvance(out TestStruct testVal, ref data))
{
impl.Update(testVal);
}
impl.Update(data);
return(impl.Finish());
}