December 20, 2024

GPG: sign file, make detached signature, verify file

$ gpg -sb file.pdf 

-s signs the file, -b produces a detached signature

This command should produce a signature file: file.pdf.sig.

To verify:

$ gpg --verify-files file.pdf file.pdf.sig

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GPG fingerprint: 2E0F FB60 7FEF 11D0 FB45 4DDC E979 E52A 7036 7A88