Cryptology ePrint Archive: BibTeX Citation of Report 2014/285

@misc{cryptoeprint:2014:285,
    author = {David Derler and Christian Hanser and Daniel Slamanig},
    title = {Privacy-Enhancing Proxy Signatures from Non-Interactive Anonymous Credentials},
    howpublished = {Cryptology ePrint Archive, Report 2014/285},
    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.