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학술지 Efficient Certificateless Proxy Signature Scheme with Provable Security
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저자
서승현, 최규영, 황정연, 김승주
발행일
201204
출처
Information Sciences, v.188, pp.322-337
ISSN
0020-0255
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.ins.2011.11.005
협약과제
11ZS1100, 지식서비스기반 SW 핵심기술연구, 황승구
초록
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. © 2011 Elsevier Inc. All rights reserved.
키워드
Certificateless proxy signature, Certificateless signature, Delegation, Provable security, Proxy signature
KSP 제안 키워드
Certificateless proxy signature, Digital Certificate, Provable Security, Provably secure, Public Key, Security model, Signature Verification, Signature scheme, certificateless signature, computational diffie-hellman problem(CDHP), formal security