A lattice-based identity-based proxy blind signature scheme in the standard model
type: Item
instance of: scholarly article
title: A lattice-based identity-based proxy blind signature scheme in the standard model
zbMATH Open document ID: 1407.94178
DOI: 10.1155/2014/307637
author: Yanqin Ma
author: Lili Zhang
published in: Mathematical Problems in Engineering
publication date: 2019-02-08T00:00:00Z
review text: Summary: A proxy blind signature scheme is a special form of blind signature which allowed a designated person called proxy signer to sign on behalf of original signers without knowing the content of the message. It combines the advantages of proxy signature and blind signature. Up to date, most proxy blind signature schemes rely on hard number theory problems, discrete logarithm, and bilinear pairings. Unfortunately, the above underlying number theory problems will be solvable in the postquantum era. Lattice-based cryptography is enjoying great interest these days, due to implementation simplicity and provable security reductions. Moreover, lattice-based cryptography is believed to be hard even for quantum computers. In this paper, we present a new identity-based proxy blind signature scheme from lattices without random oracles. The new scheme is proven to be strongly unforgeable under the standard hardness assumption of the short integer solution problem (SIS) and the inhomogeneous small integer solution problem (ISIS). Furthermore, the secret key size and the signature length of our scheme are invariant and much shorter than those of the previous lattice-based proxy blind signature schemes. To the best of our knowledge, our construction is the first short lattice-based identity-based proxy blind signature scheme in the standard model.
Mathematics Subject Classification ID: 94A62
zbMATH DE Number: 7016132
Wikidata QID: Q59065706
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2014/307637
OpenAlex ID: W2023217243
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description: scientific article; zbMATH DE number 7016132