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Add support for Digital Signatures #8

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hsyl20 opened this issue Jun 9, 2022 · 1 comment

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hsyl20 commented Jun 9, 2022

HPDF lacks support for Digital Signatures. It would be nice to add it.

Resources:

https://www.adobe.com/devnet-docs/acrobatetk/tools/DigSigDC/Acrobat_DigitalSignatures_in_PDF.pdf

mgajda commented Jun 9, 2022

I understand there are three possible items:

Adding entries to PDF dictionary with signatures (this ticket)
Assuring that all content is embedded, to guarantee invariant rendering over time (possibly letting embedded fonts pass through).
If PDF is a PDF form, then adding visual clues about signature within relevant field.

Reference document from Adobe

#migamake

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