Re: [secdir] Sector review of draft-josefsson-scrypt-kdf-03
Simon Josefsson <simon@josefsson.org> Fri, 20 November 2015 12:31 UTC
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From: Simon Josefsson <simon@josefsson.org>
To: Joseph Salowey <joe@salowey.net>
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Date: Fri, 20 Nov 2015 13:30:56 +0100
In-Reply-To: <CAOgPGoBY9V-z5emqU6e=2QCGb_wfEUM-eE+KKgzDqg9jLAYVVw@mail.gmail.com> (Joseph Salowey's message of "Sun, 13 Sep 2015 16:36:29 -0700")
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Cc: draft-josefsson-scrypt-kdf.all@tools.ietf.org, secdir <secdir@ietf.org>
Subject: Re: [secdir] Sector review of draft-josefsson-scrypt-kdf-03
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Hi Joseph. Thanks for your review, and sorry for the delay in answering this. In the new version [1] I have added a new section to discuss scrypt parameters. /Simon [1] https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-04 Joseph Salowey <joe@salowey.net> writes: > I have reviewed this document as part of the security directorate's ongoing > effort to review all IETF documents being processed by the IESG. These > comments were written primarily for the benefit of the security area > directors and document authors. > > I think this document is ready with issues. The document describes a > password to key function, scrypt, based on memory hard functions to make it > more expensive and difficult to develop specialized hardware to obtain the > password from a recovered key. I'd like to see this document published. A > few issues are listed below. > > First, I think Paul Kyzivat's GenArt review. > http://mailarchive.ietf.org/arch/msg/gen-art/fToZiioHo-6x5ZRQWNcTr-aUYVk > <https://mailarchive.ietf.org/arch/msg/gen-art/fToZiioHo-6x5ZRQWNcTr-aUYVk>, > raised > some points that could help the readability of the document. > > Second, the script algorithm has several parameters, but the document has > very little discussion on how to choose those parameters or what they > affect (this is also pointed out in Paul's message). It would be good to > have some discussion or guidance for parameter selection in the security > considerations. > > Cheers, > > Joe > _______________________________________________ > secdir mailing list > secdir@ietf.org > https://www.ietf.org/mailman/listinfo/secdir > wiki: http://tools.ietf.org/area/sec/trac/wiki/SecDirReview >
- [secdir] Sector review of draft-josefsson-scrypt-… Joseph Salowey
- Re: [secdir] Sector review of draft-josefsson-scr… Simon Josefsson