Eva: Efficient Privacy-Preserving Proof of Authenticity for Lossily Encoded Videos
Chengru Zhang, Xiao Yang, David Oswald, Mark Ryan, Philipp Jovanovic
IEEE Symposium on Security and Privacy 2025 · Day 3 · Audio and Video Security
In an era increasingly plagued by sophisticated digital manipulation and the rapid proliferation of generative AI, establishing the authenticity and provenance of digital media, particularly videos, has become paramount. The talk "Eva: Efficient Privacy-Preserving Proof of Authenticity for Lossily Encoded Videos" by Chengru Zhang and co-authors introduces a groundbreaking cryptographic protocol designed to address this critical challenge. Eva provides a robust mechanism for verifying that a video was indeed captured at a claimed time and location, and subsequently transformed by specific, declared edits, all while safeguarding the privacy of the original footage.