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sm-discuss - Re: [SM-Discuss] Compromise on signatures

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  • From: Eric Sandall <eric AT sandall.us>
  • To: "Sergey A. Lipnevich" <sergey AT optimaltec.com>
  • Cc: sm-discuss AT lists.ibiblio.org
  • Subject: Re: [SM-Discuss] Compromise on signatures
  • Date: Tue, 30 Aug 2005 10:50:33 -0700 (PDT)

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On Mon, 29 Aug 2005, Sergey A. Lipnevich wrote:
Hi All,

I can think of the following compromise that would hopefully satisfy all
sides.

1. Sorcery keeps support for hashes and signatures, both optional, but with
possibility to be restricted by users of individual systems. Here's one for
the
choice.

2. When this option becomes available, we move to digitally sign every
repository commit. In effect, this will also sign a hash that is stored in
DETAILS. Should a tarball or both tarball and hash value become compromised,
our repository will help detect that. For added protection, we can also
include
the size of tarball into DETAILS, effectively signing it as well.

This way, we will do exactly what is claimed on that Web page: sign package
receipt without signing the contents.

How does appeal to everyone?

If we do go for allowing hashsums we'll want to make sure they're as
close to being as good as the GPG signatures, which use sha512 at the
moment. So all hashsums would have to be done with sha512.

- -sandalle

- --
Eric Sandall | Source Mage GNU/Linux Developer
eric AT sandall.us | http://www.sourcemage.org/
http://eric.sandall.us/ | SysAdmin @ Inst. Shock Physics @ WSU
http://counter.li.org/ #196285 | http://www.shock.wsu.edu/
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