On Thu, 14 Aug 2014 08:44:16 +0900 Joel Rees <joel.rees@gmail.com> wrote: > this is not a situation where we are worried about > attackers Crypto is crypto... and md5, sha1, sha256 are cryptographic hashes. And a cryptographic hash is only as good as its slowness in reverse computation and its uniqueness [collision-lessness] for a given data set... --Andrew