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Preview can't apply proper PDF signature though - while Adobe Acrobat Reader (the free one) can. Many countries can issue a digital certificate that can be used

by izacus 5y ago

Preview can't apply proper PDF signature though - while Adobe Acrobat Reader (the free one) can. Many countries can issue a digital certificate that can be used with these documents to make them legally and properly signed.

IshKebab 5y ago
Many countries? Really? I have literally never seen anyone ever use any cryptograph signature features of PDF.
- wtf_is_up 5y ago
  It's pretty common in DoD space to sign PDFs using CAC (Common Access Card) PKI certs.
jokethrowaway 5y ago
That's interesting, haven't heard of countries using pdf digital certificates. I've heard a few countries implemented certified email: anything in a certified email is considered a legal document (including a plain pdf)
- izacus 5y ago
  It's not "country using signed PDFs" but "country issuing a digital certificate you can use for identity in email and document signing". Such certificate is useful for PDF signing besides other uses.