Python 3.10 and OpenSSL 3.0.0 fixes (#1952522)

Fix compatibility issue with Python 3.10. Enums now use same
representation as on Python 3.9.

Backport OpenSSL 3.0.0 compatibility patches.

Resolves: RHBZ#1952522

python-cryptography.spec

@@ -7,7 +7,7 @@
 
 Name:           python-%{srcname}
 Version:        3.4.7
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        PyCA's cryptography library
 
 License:        ASL 2.0 or BSD
@@ -18,6 +18,10 @@ Source0:        https://github.com/pyca/cryptography/archive/%{version}/%{srcnam
 Source1:        cryptography-%{version}-vendor.tar.bz2
 Source2:        conftest-skipper.py
 %endif
+Patch0001:      0001-fix-pkcs12-parse-ordering.-fixes-5872-5879.patch
+Patch0002:      0002-WIP-3.0.0-support-5250.patch
+Patch0003:      0003-switch-to-using-EVP_PKEY_derive-instead-of-DH_comput.patch
+Patch0004:      0004-Use-well-defined-enum-representation.patch
 
 ExclusiveArch:  %{rust_arches}
 
@@ -117,6 +121,11 @@ PYTHONPATH=${PWD}/vectors:%{buildroot}%{python3_sitearch} \
 %{python3_sitearch}/%{srcname}-%{version}-py*.egg-info
 
 %changelog
+* Tue May 11 2021 Christian Heimes <cheimes@redhat.com> - 3.4.7-2
+- Fix compatibility issue with Python 3.10. Enums now use same
+  representation as on Python 3.9. (#1952522)
+- Backport OpenSSL 3.0.0 compatibility patches.
+
 * Wed Apr 21 2021 Christian Heimes <cheimes@redhat.com> - 3.4.7-1
 - Update to 3.4.7
 - Remove dependency on python-cryptography-vectors package and use vectors