Comments and annotations supports w/o breaking signature

[Larsene]

Hi, first, thanks for all your work on pyHanko, who is really usefull.

Yeah, i know that you've written "The most lenient document modification policy (i.e. addition of comments and annotations) is not supported. "

I'm just asking if there is any chance that pyHanko will support it or perhaps do you know how to do that with another python package ?

Many thanks

[MatthiasValvekens]

I'm just asking if there is any chance that pyHanko will support it [...]

Sure, eventually I might get around to implementing it. The problem is, though, that these DocMDP policies are defined very vaguely, and "allow annotations" is a much broader scope than "allow form filling/signing". So the main effort bottleneck is in painstakingly testing interoperability with popular viewers.

Orthogonal to the implementation question, the "allow annotations" level is also pretty objectively bad in terms of security UX. That's the other main reason why I never made it a priority.

[...] or perhaps do you know how to do that with another python package ?

No, and I'll go even further: I'm not aware of any other open source project that has made a serious attempt at implementing DocMDP in general---but if you do find any, please let me know!

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EDIT: I assumed that you were asking about validation support. Producing certification signatures with DocMDP level 3 is actually possible already.