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WordSig: QR streams enabling platform-independent self-identification that's impossible to deepfake

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arxiv 2207.10806 v1 pith:RPCULTNI submitted 2022-07-15 cs.CR cs.AIcs.CY

classification cs.CRcs.AIcs.CY
keywords contentvideosignaturesallowingcodesdeepfakesdistributorparticipants
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Deepfakes can degrade the fabric of society by limiting our ability to trust video content from leaders, authorities, and even friends. Cryptographically secure digital signatures may be used by video streaming platforms to endorse content, but these signatures are applied by the content distributor rather than the participants in the video. We introduce WordSig, a simple protocol allowing video participants to digitally sign the words they speak using a stream of QR codes, and allowing viewers to verify the consistency of signatures across videos. This allows establishing a trusted connection between the viewer and the participant that is not mediated by the content distributor. Given the widespread adoption of QR codes for distributing hyperlinks and vaccination records, and the increasing prevalence of celebrity deepfakes, 2022 or later may be a good time for public figures to begin using and promoting QR-based self-authentication tools.

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  1. Combating Falsification of Speech Videos with Live Optical Signatures (Extended Version)

    cs.CV 2025-04 conditional novelty 6.0 of 10

    A speaker-deployed projector embeds cryptographically hashed features of the speaker's identity and lip motion into the scene, and any recording can be verified by comparing those features to the video content.

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