I need to publish documents via ASP.NET and plan on using pdf API but need to be able to verify that contents have not been changed after publish.
I assume I want to produce PDF's that users can copy, redistribute, read and print but can not edit (or hack) without breaking/removing authenticity certificate/signature from file.
Is this possible and how is it done?
Use a Certification signature. (Tools->Certificates->Certify). Set permitted actions to "No Changes Allowed"
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