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  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]
Date: Mon, 20 Jan 2014 02:39:51 +0400
From: Solar Designer <>
Subject: Re: [PHC] Native server relief support for password hashing in browsers

On Mon, Jan 20, 2014 at 02:28:20AM +0400, Solar Designer wrote:
> That said, this may well be beyond scope of PHC (unless something
> unexpectedly clever yet simple emerges), and Catena's builtin "server
> relief" is only the tip of the iceberg.  It is very nice that Catena
> standardizes just one hash type for both server-only and client+server
> uses (without that functionality built in, it'd end up being 2+ hash
> type variations), but it doesn't address the more complicated issues.

BTW, if I understood Catena's server relief design correctly, it looks
compatible with RFC 5802 (SCRAM), which I happened to have described in
my own words here (before I learned of the RFC):

For this algorithm to work, the server only needs H(Hs(password, salt)).

This is very nice if so, meaning that exact same standardized hash type
may be used for storage on the server both for SCRAM and for plaintext
logins (possibly over a secure tunnel).


Powered by blists - more mailing lists