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Date: Fri, 27 Nov 2020 14:05:40 +0100
From: Solar Designer <>
Subject: Re: cracking HMAC-SHA1 (key=salt)

On Fri, Nov 27, 2020 at 01:58:50PM +0100, magnum wrote:
> On 2020-11-27 11:52, Sebastian Reitenbach wrote:
> >Can I crack HMAC-SHA1 (key=salt) hashes with JtR, am I overlooking 
> >something?
> Unfortunately not. We have some old issue for implementing HMAC "salt is 
> key" but the demand seems low.

This is:

"HMAC formats supporting the other ordering of key and data"


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