Cryptology ePrint Archive: BibTeX Citation of Report 2015/637

@misc{cryptoeprint:2015:637,
    author = {Fenghua Li and Yanchao Wang and Rongna Xie and Jinbo Xiong and Fangfang Shan},
    title = {A Novel Cyberspace-Oriented Access Control Model},
    howpublished = {Cryptology ePrint Archive, Report 2015/637},
    year = {2015},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.