[Bug 1288293] Re: GnuPG uses SHA1 for key signatures

[Marc Deslauriers]

Thanks for opening this bug.

Please report this issue in the upstream bug tracker:

https://bugs.g10code.com/gnupg/index

Once you've done that, link the upstream bug here. Thanks.

** Changed in: gnupg (Ubuntu)
       Status: New => Confirmed

** Changed in: gnupg (Ubuntu)
   Importance: Undecided => Wishlist

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to gnupg in Ubuntu.
https://bugs.launchpad.net/bugs/1288293

Title:
  GnuPG uses SHA1 for key signatures

Status in “gnupg” package in Ubuntu:
  Confirmed

Bug description:
  (SHA1 is generally considered broken since 2005!)

  Used software:
  Kubuntu 13.10 amd64
  GnuPG package Version: 1.4.14-1ubuntu2.1 (taken from dpkg --status gnupg), 

  Reproducing instructions:
  Generate two keys using default key parameters:
  $ gpg --homedir test --gen-key
  $ gpg --homedir test --gen-key

  Sign one key with the other:
  $ gpg --edit-key name-of-first-key
  sign
  quit

  Dump the signed key:
  gpg --homedir test --export name-of-first-key | gpg --homedir test --list-packets

  You will now notice that all signatures, and therefore even the self-signatures, use "digest algo 2".
  This is SHA1:
  http://tools.ietf.org/html/rfc4880#section-9.4

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnupg/+bug/1288293/+subscriptions