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A New Identity-Based Parallel Key-Insulated Signature Scheme without Random Oracles

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1 Author(s)
Zhongmei Wan ; Coll. of Sci., Hohai Univ., Nanjing, China

To allow frequent key-updates without increasing the risk of helper key-exposure, Hanaoka et al. proposed parallel key-insulated mechanism where distinct helpers are independently used in key updates. In this paper, we propose a new identity-based parallel key-insulated signature scheme which is provably secure without resorting to the random oracle methodology. Compared with the known identity-based parallel key-insulated signature (IBPKIS) scheme secure in the standard model, our scheme enjoys more efficient verification.

Published in:

Computational Intelligence and Design (ISCID), 2011 Fourth International Symposium on  (Volume:2 )

Date of Conference:

28-30 Oct. 2011