phc-discussions - Re: [PHC] A must read...

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALCETrXs+SJ9Thuf56N-MwPKBR_zoMB2NRoo78F7kx3AZW4ikA@mail.gmail.com>
Date: Mon, 13 Jan 2014 17:32:14 -0800
From: Andy Lutomirski <luto@...capital.net>
To: discussions <discussions@...sword-hashing.net>
Subject: Re: [PHC] A must read...

On Mon, Jan 13, 2014 at 4:37 PM, Marsh Ray <maray@...rosoft.com> wrote:
> It always bears repeating that the password-cracking attacker typically has
> many candidate guesses he can try in parallel, and usually has many hash
> values he wishes to target. How do you prevent him from hiding latencies in
> long pipelines? (longer than those that would be tolerable in defenders’
> branch-happy general purpose systems)
>

Memory.  If each pipeline stage requires 500MB of DRAM, then this gets
rather expensive.

--Andy