protected override ValueTask <byte[]> HashDataOneShotAsync( byte[] key, Stream source, CancellationToken cancellationToken) => HMACSHA512.HashDataAsync(key, source, cancellationToken);
protected override ValueTask <int> HashDataOneShotAsync( ReadOnlyMemory <byte> key, Stream source, Memory <byte> destination, CancellationToken cancellationToken) => HMACSHA512.HashDataAsync(key, source, destination, cancellationToken);