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An Improved Unbounded HIBE Scheme in the Prime Order Setting
Song Luo, Su Yu, Lu Yan, Zheng Yang
1111 - 1117
10.3233/FAIA190291
Research Article
Frontiers in Artificial Intelligence and Applications
Volume 320: Fuzzy Systems and Data Mining V
Abstract

Unbounded Hierarchical Identity-Based Encryption (HIBE) is a new HIBE where the public parameters size is constant and independent of the length of the identity vectors. In this paper, we improve Lewko-Waters unbounded HIBE scheme and get a new give an HIBE scheme. Our scheme is constructed in the prime order setting, and more efficient than previous unbounded HIBE schemes. Furthermore, our scheme removes the constraint on hierarchical identity in the Lewko-Waters construction and can be proven selective security in the security model.

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