[Bug 1752660] Re: python-cryptography missing cffi dependency

[Corey Bryant]

Hi Graham,

I don't think this is a dependency issue. I'm going to back out the
changes I made earlier as I pulled the trigger too quickly with those.
What would be good to know is what 'buf' is set to in your scenario.
Here's a little script that hits the same path your traceback goes down.
It runs successfully on xenial-queens for me.

from cryptography.fernet import Fernet, MultiFernet
key1 = Fernet(Fernet.generate_key())
key2 = Fernet(Fernet.generate_key())
f = MultiFernet([key1, key2])
token = f.encrypt(b"Secret message!")

Thanks,
Corey

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https://bugs.launchpad.net/bugs/1752660

Title:
  python-cryptography missing cffi dependency

Status in Ubuntu Cloud Archive:
  Triaged
Status in Ubuntu Cloud Archive mitaka series:
  Triaged
Status in Ubuntu Cloud Archive newton series:
  Triaged
Status in Ubuntu Cloud Archive ocata series:
  Triaged
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Triaged
Status in python-cryptography package in Ubuntu:
  Fix Released
Status in python-cryptography source package in Xenial:
  Triaged
Status in python-cryptography source package in Artful:
  Triaged
Status in python-cryptography source package in Bionic:
  Fix Released

Bug description:
  When installing keystone (via apt-get install keystone) apt does not
  install python-cffi, which is required for keystone to implement
  fernat tokens (the current recommended token type)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: keystone 2:13.0.0-0ubuntu1~cloud0 [origin: Canonical]
  Uname: Linux 4.4.88-mainline-rev1 x86_64
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  CrashDB:
   {
                  "impl": "launchpad",
                  "project": "cloud-archive",
                  "bug_pattern_url": "http://people.canonical.com/~ubuntu-archive/bugpatterns/bugpatterns.xml",
               }
  Date: Thu Mar  1 17:19:34 2018
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: keystone
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.keystone.keystone.conf: 2018-03-01T16:51:52.734036

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