Baek, Joonsang; Susilo, Willy; and Zhou, Jianying, 2007, New Constructions of Fuzzy Identity-Based Encryption, in R. Deng & P. Samarati (Eds.), ACM Symposium on Information, Computer and Communications Security, New York: ACM, 368-370.
In this paper we construct two new fuzzy identity-based en-cryption (IBE) schemes in the random oracle model. Not only do our schemes provide public parameters whose size is independent of the number of attributes in each identity(used as public key) but they also have useful structures which result in more efficient key extraction and/or encryption than the random oracle version of Sahai and Water'sfuzzy IBE scheme, considered recently by Pirretti et al. We prove that the confidentiality of the proposed schemes is relative to the Bilinear Decisional Bilinear Diffe-Hellman problem.