Leakage Resilient Identity-Based Aggregate Signcryption

doi:10.13190/j.jbupt.2016.05.005

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2016, Vol. 39 ›› Issue (5): 20-25.doi: 10.13190/j.jbupt.2016.05.005

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Leakage Resilient Identity-Based Aggregate Signcryption

WANG Zhi-wei, ZHANG Xian-yi

College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2015-12-18 Online:2016-10-28 Published:2016-12-02

Abstract

Abstract: In order to solve the problem of secret key leakage in aggregate signcryption, an identity-based hash proof system based on unrestricted identity-based aggregate signcryption scheme is constructed, and its correctness of decapsulation, valid/invalid ciphertext indistinguishability, smoothness and universality are also proved. Then, with the randomness extractor, a leakage resilient identity-based aggregate signcryption scheme is constructed, in which the leakage rate of identity-based secret key can be achieved to 1-o(1). Finally, the security proof of this leakage resilient scheme is also provided.

Key words: aggregate signcryption, leakage-resilient, Hash proof system, randomness extractor

CLC Number:

TP309.1

WANG Zhi-wei, ZHANG Xian-yi. Leakage Resilient Identity-Based Aggregate Signcryption[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2016, 39(5): 20-25.

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Leakage Resilient Identity-Based Aggregate Signcryption

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