this post was submitted on 14 Mar 2025
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[–] baggins@lemmy.ca 52 points 2 days ago* (last edited 2 days ago) (25 children)

How would you make an arbitrary QR code have a verifiable signature?

[–] programmer_belch@lemmy.dbzer0.com -5 points 2 days ago (2 children)

A verifiable signature could be created but the use of public keys lets malicious actors to sign using the same key

[–] Bilaketari@reddthat.com 4 points 1 day ago

This seems to be a gross misunderstanding of public key cryptography. Public keys allow you to verify an existing signature is valid and made by the correct entity, but they absolutely don't allow you to forge a signature: that's actually what they are designed to prevent.

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