A Generic Approach for Providing Revocation Support in Secret Handshake

• Main Authors: YANG, Yanjiang, LU, Haibing, WENG, Jian, DING, Xuhua, ZHOU, Jianying
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2012
• Subjects: Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/1708; http://dl.acm.org/citation.cfm?id=2427969
• Institution: Singapore Management University

Privacy protection and user revocation are essentially conflicting requirements in many cryptographic protocols. It is a particularly challenging problem to harmonize them in a secret handshake protocol that is geared to offering strong privacy protection on the participants' group membership in the protocol execution. In this paper, we study this problem and propose a generic approach to provide revocation support in secret handshake protocols, without sacrificing the notion of privacy preserving. The main building block of our approach is CGC (Confidential Group Communication), a primitive formulated in this paper, and we present a concrete instantiation so as to realize our generic approach.