this post was submitted on 11 Feb 2024
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The White House wants to 'cryptographically verify' videos of Joe Biden so viewers don't mistake them for AI deepfakes (www.businessinsider.com)
submitted 10 months ago by L4s to c/technology
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The White House wants to 'cryptographically verify' videos of Joe Biden so viewers don't mistake them for AI deepfakes::Biden's AI advisor Ben Buchanan said a method of clearly verifying White House releases is "in the works."

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[–] [email protected] 2 points 10 months ago* (last edited 10 months ago) (1 children)

A MAC is symmetric and can thus only be verified by you or somebody who you trust to not misuse or leak the key. Regular digital signatures is what's needed here

You can still use such a signing circuit but treat it as an attestation by the camera's owner, not as independent proof of authenticity.

[–] hyperhopper 1 points 10 months ago (1 children)

A MAC is symmetric and can thus only be verified by you or somebody who you trust to not misuse or leak the key.

You sign them against a known public key, so anybody can verify them.

Regular digital signatures is what's needed here You can still use such a signing circuit but treat it as an attestation by the camera's owner, not as independent proof of authenticity.

If it's just the cameras owner attesting, then just have them sign it. No need for expensive complicated circuits and regulations forcing these into existence.

[–] [email protected] 1 points 10 months ago

You can't use a MAC for public key signatures. That's ECC, RSA, and similar.