[...] I would also opt for having (by default) additional hash algorithms. I would prefer using method of NetBSD: using an external program called digest ( see security/digest port) to select the algorithms. Oliver Eikemeier is working a ports building infrastructure and I think it would be a good idea to this new infrastructure would support multiple hash algorithm. The most easiest way would be to define a knob like PREFERED_HASH that would list the algorithms that system would prefer, and REQUIRED_HASH that would be required to checked: - makesum should generate all the PREFERED_HASH - fetch should fail if any of the REQUIRED_HASH failed