Christophe Tartary, Sujing Zhou, Dongdai Lin, Huaxiong Wang and Josef Pieprzyk
Abstract
An accumulator based on bilinear pairings was proposed at CT-RSA'05. In this paper, we first demonstrate that the security model proposed by Lan Nguyen does lead to a cryptographic accumulator which is not collision resistant. Second we show that we can provide collision-resistance by updating the adversary model appropriately. Finally, we propose an improvement on Nguyen's identity escrow scheme with membership revocation based on the accumulator by removing the trusted third party.
Publication Details: IET Information Security, vol. 2, no. 4, pp 99 - 107, December 2008. Institution of Engineering and Technology.
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