Cryptology ePrint Archive: BibTeX Citation of Report 2014/278

@misc{cryptoeprint:2014:278,
    author = {Essam Ghadafi},
    title = {Stronger Security Notions for Decentralized Traceable Attribute-Based Signatures and More Efficient Constructions},
    howpublished = {Cryptology ePrint Archive, Report 2014/278},
    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.