Since a few hours ago the Okular version available in the Microsoft Store for Windows has the same signature support than the Linux/FreeBSD versions.
Some screenshots, though it's nothing impressive, it's the same User Interface that we already have had for a while
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| A file I just signed, showing the Signature and Certificate panels |
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| The PDF backend settings |
This "new feature" has been delivered with the update of the just released Okular 21.12.2.
The interesting part is that adding Signature support for Okular on Windows didn't actually require *any* change in Okular itself, its code was already good.
What we needed was to add NSS [1] to Craft [2] and also some tweaks to poppler [3], because sadly NSS doesn't behave exactly the same on Linux than on Windows, and once that was in, just start Okular again and voilà everything was working as expected :)
Relevant Merge Requests:
https://invent.kde.org/packaging/craft-blueprints-kde/-/merge_requests/301
https://invent.kde.org/packaging/craft-blueprints-kde/-/merge_requests/304
https://invent.kde.org/packaging/craft-blueprints-kde/-/merge_requests/305
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1038
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1042
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1044
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1056
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1057
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1059
[1] NSS = the library poppler uses for signature support
[2] Craft = the meta build system we use for building KDE software on Windows
[3] poppler = the library that Okular uses for PDF support
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