Cryptology ePrint Archive: BibTeX Citation of Report 2014/833

@misc{cryptoeprint:2014:833,
    author = {Essam Ghadafi},
    title = {Efficient Distributed Tag-Based Encryption and its Application to Group Signatures with Efficient Distributed Traceability},
    howpublished = {Cryptology ePrint Archive, Report 2014/833},
    year = {2014},
    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.