• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Lattice-based strongly-unforgeable forward-secure identity-based signature scheme with flexible key update

Vol. 11, No.5, May 31, 2017
10.3837/tiis.2017.05.027, Download Paper (Free):

Abstract

Forward-secure signature is a specific type of signature, which can mitigate the damage caused by the signing key exposure. Most of the existing forward-secure (identity-based) signature schemes can update users’ secret keys at each time period, achieve the existential unforgeability, and resist against classical computer attacks. In this paper, we first revisit the framework of forward-secure identity-based signatures, and aim at supporting flexible key update at multi time period. Then we propose a post-quantum forward-secure identity-based signature scheme from lattices and use the basis delegation technique to provide flexible key update. Finally, we prove that the proposed scheme is strongly unforgeable under the short integer solution (SIS) hardness assumption in the random oracle model.


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Cite this article

[IEEE Style]
Xiangsong Zhang and Zhenhua Liu, "Lattice-based strongly-unforgeable forward-secure identity-based signature scheme with flexible key update," KSII Transactions on Internet and Information Systems, vol. 11, no. 5, pp. 2792-2810, 2017. DOI: 10.3837/tiis.2017.05.027

[ACM Style]
Zhang, X. and Liu, Z. 2017. Lattice-based strongly-unforgeable forward-secure identity-based signature scheme with flexible key update. KSII Transactions on Internet and Information Systems, 11, 5, (2017), 2792-2810. DOI: 10.3837/tiis.2017.05.027