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Matthias Valvekens PDF Expert, FOSS maintainer

December 2022, Matthias Valvekens

A commentary on the interoperability of encrypting PDF documents with public-key cryptography.

December 2022, Matthias Valvekens

Identifying the signer’s key in a PDF signature: how does that work?

August 2022, Matthias Valvekens

Matthias Valvekens explains the difference and respective value of digital signatures vs. MAC-based technology for authenticating PDF files.

August 2022, Matthias Valvekens

Matthias Valvekens, the ISO project leader who led development of ISO 32004, has written a pair of blog … Read more

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