At lest the python3-cryptography package is missing the python3-pyasn1 as dependency.
python-cryptography-vectors-0.8.2-1.fc22,python-cryptography-0.8.2-1.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/python-cryptography-vectors-0.8.2-1.fc22,python-cryptography-0.8.2-1.fc22
python-cryptography-vectors-0.8.2-1.fc21,python-cryptography-0.8.2-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/python-cryptography-vectors-0.8.2-1.fc21,python-cryptography-0.8.2-1.fc21
Package python-cryptography-vectors-0.8.2-1.fc21, python-cryptography-0.8.2-1.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing python-cryptography-vectors-0.8.2-1.fc21 python-cryptography-0.8.2-1.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-6494/python-cryptography-vectors-0.8.2-1.fc21,python-cryptography-0.8.2-1.fc21 then log in and leave karma (feedback).
python-cryptography-vectors-0.8.2-1.fc22, python-cryptography-0.8.2-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.