[GH-ISSUE #614] Invalidate digital signatures for uploaded PDF files #481

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opened 2026-02-25 21:32:01 +03:00 by kerem · 1 comment

kerem commented

2026-02-25 21:32:01 +03:00

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Originally created by @migueltsantana on GitHub (Apr 21, 2024).
Original GitHub issue: https://github.com/ciur/papermerge/issues/614

Originally assigned to: @ciur on GitHub.

Description
On line 54 from papermerge/core/ocr/document.py, where the function ocrmypdf.ocr() is declared, the invalidate-digital-signature flag is missing.
Right now, digitally signed PDF's (even if they have already the text embedded into them) won't be searchable because they cannot go through the OCR function.
This won't interfere with the non-repudiation property of the signed PDF file itself as Papermerge stores two versions of the PDF: the uploaded one and the OCRed one.

Sources
https://ocrmypdf.readthedocs.io/en/latest/api.html
https://ocrmypdf.readthedocs.io/en/latest/pdfsecurity.html#digital-signatures

Info:

Papermerge Version 3.2
Docker 26.0.2
Docker Compose 2.26.1
OS: Raspbian 12 (bookworm)

Originally created by @migueltsantana on GitHub (Apr 21, 2024). Original GitHub issue: https://github.com/ciur/papermerge/issues/614 Originally assigned to: @ciur on GitHub. **Description** On line 54 from papermerge/core/ocr/document.py, where the function ocrmypdf.ocr() is declared, the `invalidate-digital-signature` flag is missing. Right now, digitally signed PDF's (even if they have already the text embedded into them) won't be searchable because they cannot go through the OCR function. This won't interfere with the non-repudiation property of the signed PDF file itself as Papermerge stores two versions of the PDF: the uploaded one and the OCRed one. **Sources** https://ocrmypdf.readthedocs.io/en/latest/api.html https://ocrmypdf.readthedocs.io/en/latest/pdfsecurity.html#digital-signatures **Info:** - Papermerge Version 3.2 - Docker 26.0.2 - Docker Compose 2.26.1 - OS: Raspbian 12 (bookworm)

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