Authenticity Guaranteed: Verifying Video Integrity on Consumer Devices with Post-Quantum Signatures
summary
Proposes signing live or stored video on-device by splitting streams into blocks (example: 60 fps into 1s blocks), hashing 59 frames then hashing the concatenation and embedding a digital signature into a fixed marker frame pixel region so a player can extract and verify each block. Uses post-quantum signatures (prototype evaluates Mayo for its short signature size), demo runs 2s blocks showing signature changes every block, supports a URL-to-certificate PKI lookup and flags any tampering.
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chapters (13)
- 0:00Conference introduction
- 1:37Deepfakes threat grows
- 3:06TABS and quantum networks
- 4:54Quantum security timelines
- 6:22AI video confusion example
- 8:29Video integrity detection
- 9:32Post-quantum video signing
- 11:18Hashing and signing process
- 13:51PKI role explained
- 14:35Choosing algorithms
- 16:25Live demo verification
- 17:48Use cases overview
- 19:12Q&A
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