Forward-Secure Encryption with Fast Forwarding

ePrint Report: Forward-Secure Encryption with Fast Forwarding

Yevgeniy Dodis, Daniel Jost, Harish Karthikeyan

Forward-secure encryption (FSE) allows communicating parties to refresh their keys across epochs, in a way that compromising the current secret key leaves all prior encrypted communication secure. We investigate a novel dimension in the design of FSE schemes: fast-forwarding (FF). This refers to the ability of a stale communication party, that is "stuck" in an old epoch, to efficiently "catch up" to the newest state, and frequently …

encryption eprint report fast forward forwarding