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Efficient certificateless proxy signature scheme with provable security

Authors
Seo, Seung-HyunChoi, Kyu YoungHwang, Jung YeonKim, Seungjoo
Issue Date
1-4월-2012
Publisher
ELSEVIER SCIENCE INC
Keywords
Proxy signature; Certificateless signature; Certificateless proxy signature; Delegation; Provable security
Citation
INFORMATION SCIENCES, v.188, pp.322 - 337
Indexed
SCIE
SCOPUS
Journal Title
INFORMATION SCIENCES
Volume
188
Start Page
322
End Page
337
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/108759
DOI
10.1016/j.ins.2011.11.005
ISSN
0020-0255
Abstract
In this paper we propose a very efficient and provably secure proxy signature scheme with implicit certificate (called "certificateless proxy signature scheme"), where a receiver does not have to verify a certificate before verifying a signed message, yet only the original signer or the proxy signer who properly registered its public key and identity information is able to sign. Unlike traditional approaches which assume a PKI where the original signer and the proxy signer already hold their public keys and digital certificates, our scheme does not need for each user to have a public key and a certificate, thus we can save the time for verifying the original signer's and the proxy signer's certificates in the proxy signature verification phase. Furthermore, we present a formal security model for our scheme under the intractability of the computational Diffie-Hellman problem in the random oracle model. (C) 2011 Elsevier Inc. All rights reserved.
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College of Science and Technology > Department of Mathematics > 1. Journal Articles
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