Cryptology ePrint Archive: BibTeX Citation of Report 2015/613

@misc{cryptoeprint:2015:613,
    author = {Jianting Ning, Xiaolei Dong, Zhenfu Cao and Lifei Wei},
    title = {Accountable Authority Ciphertext-Policy Attribute-Based Encryption with White-Box Traceability and Public Auditing in the Cloud},
    howpublished = {Cryptology ePrint Archive, Report 2015/613},
    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.