Deniable Authentication when Signing Keys Leak

ePrint Report: Deniable Authentication when Signing Keys Leak

Suvradip Chakraborty, Dennis Hofheinz, Ueli Maurer, Guilherme Rito

Deniable Authentication is a highly desirable property for secure messaging protocols: it allows a sender Alice to authentically transmit messages to a designated receiver Bob in such a way that only Bob gets convinced that Alice indeed sent these messages. In particular, it guarantees that even if Bob tries to convince a (non-designated) party Judy that Alice sent some message, and even if Bob …

alice authentication eprint report indeed keys leak messages messaging non party protocols report secure messaging signing