Usable everlasting encryption using the pornography infrastructure

Résumé

Nine years before Snapchat and its ephemeral messages, Aumann, Ding, and Rabin introduced the idea of everlasting security: an encryption that could not be decrypted after a certain date, no matter the adversary’s computing power. Their method is efficient but not adapted to real-life constraints and cannot effectively be used today. This paper proposes a new solution that makes use of the already existing communications from pornography distribution networks. The method proposed has the advantage of being usable off-the-shelf by individuals with limited technical skills.