Discrete logarithm based additively homomorphic encryption and secure data aggregation

  • Authors:
  • Licheng Wang; Lihua Wang; Yun Pan; Zonghua Zhang; Yixian Yang

  • Affiliations:
  • State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, 10 West Tucheng Road, Beijing 100876, PR China and National Institute of Informatio ...;National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei-shi, Tokyo 184-8795, Japan;Communication University of China, 1 East Street of Dingfuzhuang, Beijing 100024, PR China;Institut TELECOM/TELECOM Lille1, Cité Scientifique Rue Guglielmo Marconi, BP 20145, 59653 Villeneuve d'Ascq cedex, France;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, 10 West Tucheng Road, Beijing 100876, PR China

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2011

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Abstract

At PKC 2006, Chevallier-Mames, Paillier, and Pointcheval proposed discrete logarithm based encryption schemes that are partially homomorphic, either additively or multiplicatively and announced an open problem: finding a discrete logarithm based cryptosystem that would help realize fully additive or multiplicative homomorphism. In this study, we achieve this goal by enclosing two opposite settings on the discrete logarithm problems (DLP) simultaneously: the first setting is that DLP over Z"p"""0 (where p"0-1 is smooth) is used to encode messages, while the second setting is that DLP over Z"p (where p-1 is non-smooth, i.e., containing large prime factors) is used to encrypt plaintexts. Then, based on the proposed scheme, novel protocols for secure data aggregation in wireless sensor networks are presented. Finally, taking Paillier's factoring-based additively homomorphic encryption schemes as the reference framework, we present detailed performance comparisons and further enhancement.