I have submitted new packages for python-cryptography to F21 and F22:
https://admin.fedoraproject.org/updates/python-cryptography-vectors-0.8.2...
https://admin.fedoraproject.org/updates/python-cryptography-vectors-0.8.2...
This includes an upstream fix and a fix for a missing dependency
(python*-pyasn1). Please test. Thanks!
Nathaniel