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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