phc-discussions - Re: [PHC] A (naively?) simple PHC submission using hash chains

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: <8380B424-EF1F-43A6-B8B3-2B9E66FD724F@goldmark.org>
Date: Wed, 7 Aug 2013 01:05:35 -0600
From: Jeffrey Goldberg <Jeffrey@...dmark.org>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] A (naively?) simple PHC submission using hash chains

On Aug 6, 2013, at 10:06 PM, Tony Arcieri <tony.arcieri@...il.com> wrote:

> This approach seemed fun to me and I'd like to know what problems it has.

In your example, you set hash to be HMAC-SHA256. What requirements on hash are there? I would suspect that simply SHA-n would be insufficient, and the use of HMAC here is crucial. Is that correct?

Cheers,

-j