Anonymous identity-based encryption scheme without random oracles

doi:10.3969/j.issn.0253-2778.2012.04.006

Journal of University of Science and Technology of China ›› 2012, Vol. 42 ›› Issue (4): 296-301.DOI: 10.3969/j.issn.0253-2778.2012.04.006

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Anonymous identity-based encryption scheme without random oracles

REN Yanli

1.School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China; 2.Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2011-05-27 Revised:2011-10-14 Online:2012-04-30 Published:2012-04-30

Abstract

Abstract: The anonymous identity-based encryption (IBE) schemes are currently only selective-ID secure without random oracles or provably secure under a complex assumption. An anonymous IBE scheme based on decisional bilinear Diffie-Hellman (BDH) assumption in a group of composite order was proposed, which is ANON-IND-ID-CPA secure without random oracles and only needs two bilinear pairing computations. This scheme is more secure and efficient than the existing ones.

Key words: anonymous, identity-based encryption, without random oracles, decisional bilinear Diffie-Hellman assumption

REN Yanli, GU Dawu, WANG Shuozhong, ZHANG Xinpeng. Anonymous identity-based encryption scheme without random oracles[J]. Journal of University of Science and Technology of China, 2012, 42(4): 296-301.

Anonymous identity-based encryption scheme without random oracles

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