Is OpenPGP signed PDF a viable Adobe alternative?

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Struggling with PDF signatures, Certificate and Time Stamping Authorities, and signature-compliant PDF readers?

PDF/PGP is a new and low threshold OpenPGP alternative to sign PDF documents. It’s implemented in SavaPage as Feature Preview, explained in the User Manual and demonstrated in a Signed PDF Sample.

You’re invited to take a look and share your opinion, experience and wishes.