Sphinx builds HTML documentation in FIPS mode properly
Previously, the Python Sphinx generator failed to build documentation in the HTML format on systems with FIPS mode activated. With this update,the use of the md5() function has been fixed by setting the "used_for_security" parameter to `false`. As a result, Sphinx now builds HTML documentation as expected.
Sphinx html builder uses md5 function for determining whether the docs have been already built  and thus fails with ValueError in any html docs build. This would IMHO be safe to alter using usedforsecurity=False in md5 function call (because this is really not used for security).
(In reply to Bohuslav "Slavek" Kabrda from comment #0)
> Sphinx html builder uses md5 function for determining whether the docs have
> been already built  and thus fails with ValueError in any html docs
> build. This would IMHO be safe to alter using usedforsecurity=False in md5
> function call (because this is really not used for security).
Yes, I think that's a completely valid option (or at least I can't see an attack scenario that would apply to building/not building documentation).
Another option is to migrate to a stronger hash anyway (which would imply a rebuild when upgrading from an older version of sphinx to a newer version of sphinx, but the caching would work fine on the next call of get_outdated_docs() again).
Or just let get_outdated_docs() return everything if md5 computation fails.
Created attachment 1134757 [details]
Allow rebuilding docs in fips mode
Attaching patch which should fix the issue
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.