Short and efficient certificate-based signature

Joseph K Liu, Feng Bao, Jianying Zhou

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

21 Citations (Scopus)


In this paper, we propose a short and efficient certificate-based signature (CBS) scheme. Certificate-based cryptography proposed by Gentry [6] combines the merit of traditional public key cryptography (PKI) and identity based cryptography, without use of the costly certificate chain verification process and the removal of key escrow security concern. Under this paradigm, we propose the shortest certificate-based signature scheme in the literature. We require one group element for the signature size and public key respectively. Thus the public information for each user is reduced to just one group element. It is even shorter than the state-of-the-art PKI based signature scheme, which requires one group element for the public key while another group element for the certificate. Our scheme is also very efficient. It just requires one scalar elliptic curve multiplication for the signing stage. Our CBS is particularly useful in power and bandwidth limited environment such as Wireless Cooperative Networks.
Original languageEnglish
Title of host publicationProceedings of the Networking 2011 Workshops: Workshop on Wireless Cooperative Networks Security (WCNS 2011)
EditorsVicente Casares-Giner, Pietro Manzoni, Ana Pont
Place of PublicationHeidelberg Germany
Pages167 - 178
Number of pages12
ISBN (Print)9783642230400
Publication statusPublished - 2011
Externally publishedYes
EventWorkshop on Wireless Cooperative Networks Security 2011 - Valencia, Spain
Duration: 13 May 201513 May 2015


WorkshopWorkshop on Wireless Cooperative Networks Security 2011
Abbreviated titleWCNS 2011

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