상세정보
학술지
Efficient Certificateless Proxy Signature Scheme with Provable Security
- 저자
- 서승현, 최규영, 황정연, 김승주
- 발행일
- 201204
- 출처
- Information Sciences, v.188, pp.322-337
- ISSN
- 0020-0255
- 출판사
- Elsevier
- 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.
- KSP 제안 키워드
- Certificateless proxy signature, Digital Certificate, Provable Security, Provably secure, Public Key, Security model, Signature Verification, Signature scheme, computational diffie-hellman problem(CDHP), formal security, implicit certificate