Title :
Secure Short Hierarchical Identity-Based Signature in the Standard Model
Author :
Zhang, Leyou ; Hu, Yupu ; Wu, Qing ; Tian, Xu An
Author_Institution :
Dept. of Math. Sci., Xidian Univ., Xi´´an, China
Abstract :
In this paper, a new identity-based signature (HIBS) scheme is proposed. Our new scheme has some advantages over the available schemes: the private keys size shrinks as the identity depth increases and the signature size is a constant as it consists of three group elements. Furthermore, under the selective-identity security model, we reduce its security to the l-CDH problem. This assumption is more natural than many of the hardness assumptions recently introduced to HIBS in the standard model.
Keywords :
digital signatures; handwriting recognition; private key cryptography; HIBS; hardness assumptions; hierarchical identity-based signature; identity depth; l-CDH problem; private keys size; selective-identity security model; signature size; Authentication; Communication standards; Computer networks; Identity-based encryption; Information security; Mathematical model; Public key; Telecommunication computing; Telecommunication standards; Wireless communication; HIBS; l-CDH; provable security; standard model;
Conference_Titel :
Networks Security Wireless Communications and Trusted Computing (NSWCTC), 2010 Second International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-4011-5
Electronic_ISBN :
978-1-4244-6598-9
DOI :
10.1109/NSWCTC.2010.90
