Cryptology ePrint Archive: BibTeX Citation of Report 2010/055

@misc{cryptoeprint:2010:055,
    author = {Jan Camenisch and Nathalie Casati and Thomas Gross and Victor Shoup},
    title = {Credential Authenticated Identification and Key Exchange},
    howpublished = {Cryptology ePrint Archive, Report 2010/055},
    year = {2010},
    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.