[Bug 1461834] Re: 1024-bit signing keys should be deprecated

Julian Andres Klode 1461834 at bugs.launchpad.net
Wed Aug 14 17:23:55 UTC 2024


This should be fixed now, PPAs are signed with 4096 bit keys, existing
1024 ones have been dual signed now and the end point gives you 4096 bit
keys if you add them.

** Changed in: launchpad
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1461834

Title:
  1024-bit signing keys should be deprecated

Status in Launchpad itself:
  Fix Released
Status in apt package in Ubuntu:
  Invalid
Status in gnupg2 package in Ubuntu:
  Confirmed

Bug description:
  1024-bit RSA was deprecated  years ago by NIST[1], Microsoft[2] and
  more recently by others[3].

  1024-bit signing keys are insufficient to guarantee the authenticity
  of software distributed from Launchpad.net including PPAs. There
  should be a mechanism to refuse signing keys below a minimum key
  length based on key type. 1024-bit signing keys should be deprecated
  and removed from Launchpad.net itself ASAP.  Future projects and PPAs
  should be disallowed from using 1024-bit signing keys.

  1. http://csrc.nist.gov/publications/nistpubs/800-131A/sp800-131A.pdf
  2. http://blogs.technet.com/b/pki/archive/2012/06/12/rsa-keys-under-1024-bits-are-blocked.aspx
  3. https://threatpost.com/mozilla-1024-bit-cert-deprecation-leaves-107000-sites-untrusted/108114

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