ENH: Digitally sign PDF document

[zhangwuqiao]

Want to add the signature function of Digitally sign document.

[sgelis]

Any update/roadmap on this request? We would be delighted to help with this feature, provided we could get some guidance from contributors (we are new to this codebase).

[MartinThoma]

This month we had / have a lot of changes. Only today most of them were merged back to main.

What kind of advice are you looking for?

[pubpub-zz]

Another project pyHanko seems to propose such feature which may not be so easy to implement after a quick look at pdf 1.7
Does it worth to implement it ?

[MartinThoma]

Very good point @pubpub-zz - let's discuss this with them as well: MatthiasValvekens/pyHanko#127

I wouldn't be a huge fan of introducing more dependencies and it looks very much to me that it's possible / simple to just exclude digital signatures from PyPDF2 without a real drawback for users.

[MartinThoma]

I gave this another thought: I like the feature, but I also don't see the need to add it directly to PyPDF2. We have a couple of other topics/bugs in PyPDF2 which we should improve and pyHanko could be used in combination with PyPDF2.

For that reason, I would close this issue as "not in 2022". If anybody still feels we need it, we can open it in 2023 again. Are there any objections?

[MartinThoma]

I'm closing this as a duplicate of #302