On 8/17/16, 3:48 PM, "Charles R. Portwood II" <charlesportwoo...@ethreal.net on behalf of charlesportwoo...@erianna.com> wrote:
>Hi everyone, > >I've spent the last week and a half playing around with various cost >factors on different virtual machines and hardware (including compiling >this down for armv6 and testing on a Pi Zero), and looking over the spec >a bit more and would like to update the proposal to use the following >cost factors: > > >memory_cost = 1 MiB >time_cost = 2 >threads = 2 > > >There are no "bad" cost factors for Argon2, but obviously more work is >better than less. These cost factors provide sufficient work effort >without exhausting system resources. Argon2 is pretty fast with these >cost factors even on a Pi Zero, which is the most resource constrained >system I could get my hands on. In all my testing I wasn't ever able to >get memory exhaustion to occur just from running argon2 hashing. > >I'd like to gather some last feedback and make sure there aren't any >serious objections to these cost factors (or anything else for that >matter) before putting this up for a vote. Please let me know your >thoughts. Hi Charles, I trust your judgement in drawing conclusions from these experiments. Thank you for the work you've put in. Tom -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
