Date: Tue, 19 Jun 2012 17:17:26 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: Chris Rees <utisoft@gmail.com> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Dag-Erling Smorgrav <des@freebsd.org> Subject: Re: svn commit: r237269 - in head: etc lib/libutil Message-ID: <20120619171726.GA72257@FreeBSD.org> In-Reply-To: <CADLo838XD7uf798uaQhx6zAEP86QbqcKByZrn%2B5qn%2BTUyztT-g@mail.gmail.com> References: <201206191446.q5JEkJTY050836@svn.freebsd.org> <20120619161320.GA54109@FreeBSD.org> <CADLo838XD7uf798uaQhx6zAEP86QbqcKByZrn%2B5qn%2BTUyztT-g@mail.gmail.com>
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On Tue, Jun 19, 2012 at 05:21:13PM +0100, Chris Rees wrote: > On Jun 19, 2012 5:15 PM, "Alexey Dokuchaev" <danfe@freebsd.org> wrote: > > Pardon my possible unawareness, but was this change discussed anywhere? > > http://lists.freebsd.org/pipermail/freebsd-security/2012-June/006271.html Thanks for the link, I didn't check -security@ for some reason. > > I understand the rationale to move away from MD5, but reasons for SHA512 > > seem moot. I've personally had been using Blowfish for password hashes > > since OpenBSD switched to it, for example, as fast and apparently reliable > > hash. Is there anything wrong with it? Why SHA512 is clear winner here? > > FWIW, ports use SHA256 for now. Could it be that switch to SHA512 will > > impose performance problems? > > Why would you want password matching to be fast? That makes brute-forcing > easier. Maybe I don't. I just want to know if I should switch from Blowfish to SHA512. It seems that the former is quite popular judging from discussion link given above. It also seems that des@' rationale for the switch boils down to "I vastly prefer sha512 to blf, as that is what the rest of the world uses." If there's nothing wrong with Blowfish, I guess I'll stick to it as I prefer compatibility among *BSD to some weird Unix clones. :-) ./danfe
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