oss-sec mailing list archives
Re: OpenSSH key blacklisting
From: "Gustavo De Nardin (spuk)" <gustavodn () mandriva com>
Date: Fri, 16 May 2008 17:10:43 -0300
* Solar Designer <solar () openwall com> [2008-05-16 21:18 +0400]:
Hi, Are any other distros, besides Debian, Ubuntu, and derived ones, going to implement key blacklisting in OpenSSH - or are considering it? We are considering it for Openwall GNU/*/Linux, and if our effort would be reused by others, or if others join us in developing and/or testing the patch, this would be a reason for us to go for it. I don't think we'll take the Debian/Ubuntu patch as-is. Rather, we are likely to use a trivial binary encoding/compression method for the partial fingerprints. We'd also use smaller partial fingerprints. With the approach I have in mind, it'd take around 4.55 bytes per key to store 48-bit partial fingerprints, bringing the installed file size for 3 arch types and 2 key types/sizes in under 1 MB (or just over 1 MB for 3 key types/sizes).
If this is going to be accepted as a more general solution, it'd be good to allow also for local, admin-maintened, blacklists, not just upstream maintened (and automatically updated).
Current thread:
- Re: OpenSSH key blacklisting, (continued)
- Re: OpenSSH key blacklisting Sebastian Krahmer (May 28)
- Re: OpenSSH key blacklisting Tim Brown (Jun 02)
- Re: OpenSSH key blacklisting Sebastian Krahmer (Jun 02)
- Re: OpenSSH key blacklisting Nathanael Hoyle (Jun 04)
- Re: OpenSSH key blacklisting The Fungi (Jun 04)
- Re: OpenSSH key blacklisting Nathanael Hoyle (Jun 04)
- Re: OpenSSH key blacklisting Jonathan Smith (Jun 04)
- Re: OpenSSH key blacklisting Nathanael Hoyle (May 28)
- Re: OpenSSH key blacklisting Florian Weimer (May 28)
- Re: OpenSSH key blacklisting Mike Frysinger (May 31)
- Re: OpenSSH key blacklisting Solar Designer (May 16)
- Re: OpenSSH key blacklisting Gustavo De Nardin (spuk) (May 16)