Welcome to the resource topic for 2006/193
Title:
(Hierarchical Identity-Based) Threshold Ring Signatures
Authors: Victor K. Wei, Tsz Hon Yuen
Abstract:We construct the first several efficient threshold ring signatures (TRS) without random oracles. Specializing to a threshold of one, they are the first several efficient ring signatures without random oracles after the only earlier instantiation of Chow, Liu, Wei, and Yuen. Further specializing to a ring of just one user, they are the short (ordinary) signatures without random oracles summarized in Wei and Yuen. We also construct the first hierarchical identity-based threshold ring signature without random oracles. The signature size is O(n\lambda_s) bits, where \lambda_s is the security parameter and n is the number of users in the ring. Specializing to a threshold of one, it is the first hierarchical identity-based ring signature without random oracles. Further specializing to a ring of one user, it is the constant-size hierarchical identity-based signature (HIBS) without random oracles in Yuen-Wei - the signature size is O(\lambda_s) bits which is independent of the number of levels in the hierarchy.
ePrint: https://eprint.iacr.org/2006/193
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