Welcome to the resource topic for 2009/019
Title:
Communication-Efficient Private Protocols for Longest Common Subsequence
Authors: Matthew Franklin, Mark Gondree, Payman Mohassel
Abstract:We design communication efficient two-party and multi-party protocols for the longest common subsequence (LCS) and related problems. Our protocols achieve privacy with respect to passive adversaries, under reasonable cryptographic assumptions. We benefit from the somewhat surprising interplay of an efficient block-retrieval PIR (Gentry-Ramzan, ICALP 2005) with the classic “four Russians” algorithmic design. This result is the first improvement to the communication complexity for this application over generic results (such as Yao’s garbled circuit protocol) and, as such, is interesting as a contribution to the theory of communication efficiency for secure two-party and multiparty applications.
ePrint: https://eprint.iacr.org/2009/019
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