2

Adobe Acrobat DC on windows support this feature. While snap package adobe acrobat is partially functional on linux, as it logs incompatibility message.

So actually I am looking for signing my offer letter pdf for joining I want to do it on ubuntu 20.04. Is there any software (long term supported) for that?***

Requirement:

  1. I will be putting my name in the signature in text or image form.
  2. The whole thing will get digitally signed by some encryption algorithm.

Mostly what I am getting is merely signing and securing the document but not a visible signature. Any wayout?

3
  • I believe that you can do that in LibreOffice, although I am not sure of the details.
    – Eagle_Mike
    Mar 11, 2021 at 16:26
  • pdftk, PDF ToolKit might help. Read man pdftk
    – waltinator
    Mar 11, 2021 at 16:30
  • @Eagle_Mike the signature line method is in libre office writer, pdf opens in libre office draw
    – Sayan Dey
    Mar 11, 2021 at 17:23

2 Answers 2

1

Not recommended (options 1): use deb installation commercial Foxit https://www.foxit.com/pdf-editor/ or online solution.

Not recommended (options 2): long way to install w$ on VirtualBox and use the latest Abode Reader DC or try to use deb installation Adobe Reader 9.

Recommended (options 3): In Ubuntu install apt-get install xournal add annotate picture as sign and sign all document by yours pgp key.

Sign:

gpg --clearsign --output=sign_file.pdf file.pdf

Verify:

$ gpg --verify sign_file.pdf

gpg: Signature made czw, 3 lut 2022, 12:45:58 CET
gpg:                using RSA key 14644CCD80A59C3A15E226568C199B37E09FA079
gpg: Good signature from "xxxxx" [ultimate]
gpg:                 aka "xxxxxx" [ultimate]

You can add this command to filemanager-actions

Credit: How do I digitally sign a PDF with a S/MIME certificate?

1
  • Thanks I just tried this out, exactly what i want except the ux is a bit difficult to work with.
    – Sayan Dey
    Feb 14 at 5:49
-1

I think you can do something like that on Gimp, potentially with a picture of your signature that you scan

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