[ubuntu-dev] Bug#693372: ubuntu-dev-tools: requestsync fails "ValueError: IV must be 16 bytes long"

[Vincent Cheng]

Hi,

I came across this bug while trying to run requestbackport as well...

> This comes from a bad combination of python-crypto and python-keyring
> (see http://bugs.debian.org/675379; python-keyring: CryptedFileKeyring
> is insecure). python-keyring got fixed already in unstable but didn't
> migrate to testing yet.
> Someone familiar with the Debian process should check if it's still
> possible to let python-keyring migrate to testing.

...but even after installing python-keyring from unstable,
requestbackport is still unusable.

$ requestbackport supertuxkart
Traceback (most recent call last):
  File "/usr/bin/requestbackport", line 294, in <module>
    main()
  File "/usr/bin/requestbackport", line 275, in main
    Launchpad.login(options.lpinstance)
  File "/usr/lib/python2.7/dist-packages/ubuntutools/lp/lpapicache.py",
line 66, in login
    version=api_version)
  File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py",
line 539, in login_with
    credential_save_failed, version)
  File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py",
line 342, in _authorize_token_and_login
    authorization_engine.unique_consumer_id)
  File "/usr/lib/python2.7/dist-packages/launchpadlib/credentials.py",
line 282, in load
    return self.do_load(unique_key)
  File "/usr/lib/python2.7/dist-packages/launchpadlib/credentials.py",
line 336, in do_load
    'launchpadlib', unique_key)
  File "/usr/lib/python2.7/dist-packages/keyring/core.py", line 37, in
get_password
    return _keyring_backend.get_password(service_name, username)
  File "/usr/lib/python2.7/dist-packages/keyring/backend.py", line
196, in get_password
    _, session = service_iface.OpenSession("plain", "")
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line
651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException:
org.freedesktop.DBus.Error.UnknownMethod: Method "OpenSession" with
signature "ss" on interface "org.freedesktop.Secret.Service" doesn't
exist

There isn't a different version of python-crypto in unstable that I
can test with.

Michael: the reason why python-keyring can't migrate to testing right
now is because Debian is in freeze, and updates such as new upstream
releases don't comply with the freeze policy [1]. Is there a way to
fix this bug with the current version of python-keyring in testing
instead?

Regards,
Vincent

[1] http://release.debian.org/wheezy/freeze_policy.html