Sandi: A System for Accountability and Applications in Direct Communication

arXiv:2401.16759v2 Announce Type: replace
Abstract: We construct a system, Sandi, to bring trust in online communication through accountability. Sandi is based on a unique "somewhat monotone" accountability score, with strong privacy and security properties. A registered sender can request from Sandi a cryptographic tag encoding its score. The score measures the sender's trustworthiness based on its previous communications. The tag is sent to a receiver with whom the sender wants to initiate a conversation and signals the sender's "endorsement" for …

accountability applications arxiv can communication cryptographic cs.cr encoding privacy privacy and security request score security system tag the score trust