Welcome to the resource topic for 2002/064
Title:
Protecting against Key Exposure: Strongly Key-Insulated Encryption with Optimal Threshold
Authors: Mihir Bellare, Adriana Palacio
Abstract:A new framework for protection against key exposure was
recently suggested by Dodis et. al… We take its realization
further towards practice by presenting simple new schemes that provide benefits
over previous ones in terms of scalability, performance and security. Our first
contribution is a simple, practical, scalable scheme called SKIE-OT that
achieves the best possible security in their framework. SKIE-OT is based on
the Boneh-Franklin identity-based encryption (IBE) scheme and
exploits algebraic properties of the latter. We also show that the role of
identity-based encryption is not coincidental by proving that IBE is equivalent
to (not strongly) key-insulated encryption with optimal threshold and allowing
random-access key updates.
ePrint: https://eprint.iacr.org/2002/064
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