
The keystonemiddleware library recently switched to using the cryptography library over pycrypto, which was unmaintained. See Iced7f5115e49ccf4f7f5bf6813cb5988b95c248b Change-Id: Ib492bce6df005e8b4e824352e523d2d80c1a8839 Co-Authored-By: Nolan Brubaker <nolan.brubaker@rackspace.com>