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Date: Sun, 12 Apr 2015 17:21:36 +0200
From: Frank Dittrich <frank.dittrich@...lbox.org>
To: john-dev@...ts.openwall.com
Subject: Re: gpg and gpg-opencl benchmarks
On 04/12/2015 02:41 PM, Frank Dittrich wrote:
> man gpg says for --s2k-count:
>
>
> --s2k-count n
> Specify how many times the passphrase mangling is
> repeated. This value may range between 1024 and
> 65011712 inclusive. The default is inquired from gpg-
> agent. Note that not all values in the 1024-65011712
> range are legal and if an illegal value is selected,
> GnuPG will round up to the nearest legal value. This
> option is only meaningful if --s2k-mode is 3.
>
>
> But looking at the real code, I think the description is misleading, and
> your observation that this count represents the number of bytes
> processed through the specific hash algorithm is correct.
With bleeding-jumbo commit 24bc0b53dec316613551b1da078a060cb4ae091b, I
renamed the first tunable cost from "iteration count" to "s2k-count".
The name isn't perfect, but at least googling for "s2k-count" provides
helpful results.
Frank
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