期刊名称：Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications
印刷版ISSN：2093-5374
电子版ISSN：2093-5382
出版年度：2011
卷号：2
期号：3
页码：74-84
出版社：Innovative Information Science & Technology Research Group
摘要：In 2009, Chang and Cheng proposed an efficient proxy raf.e protocol. In their scheme, the raf.e tickets are known by participants as well as raf.e organizers. Hence, unless we implicitly add the unrealistic assumption that the organizer is trustworthy, this may cause problems and threaten the security of the e-raf.e from the viewpoint of participants. In this paper, we use the concept of proxy signatures and symmetric cryptography to propose an efficient proxy raf.e scheme which overcomes this weakness. We show that the proposed scheme achieves all other security requirements mentioned in the literature. The proposed scheme is shown to outperform the scheme of Chang and Cheng in terms of communication load and computational complexity
