Strongly unforgeable ID-based signatures without random oracles

descriptionPublicationkeyboard_double_arrow_right Article , Part of book or chapter of book , Conference object 01 Jan 2009 English Publisher:Inderscience PublishersJournal:International Journal of Applied Cryptography, volume 2, page 35 (issn: 1753-0563, eissn: 1753-0571,

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Authors: Chifumi Sato; Takeshi Okamoto; Eiji Okamoto;

doi: 10.1504/ijact.2010.033797 , 10.1007/978-3-642-00843-6_4

Strongly unforgeable ID-based signatures without random oracles

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Abstract

In this paper, we construct a strongly unforgeable ID-based signature scheme in the standard model (or without random oracles), with five signature parameters. The signature size of our scheme is smaller than that of other schemes based on varieties of the Diffie Hellman (DH) problem or the discrete logarithm problem. The security of the scheme relies on the difficulty solving three problems related to the DH problem and a one-way isomorphism.

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University of Tsukuba
Japan
Tsukuba University of Technology
Japan

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