Cryptology ePrint Archive: BibTeX Citation of Report 2007/074

@misc{cryptoeprint:2007:074,
    author = {Hovav Shacham},
    title = {A Cramer-Shoup Encryption Scheme from the Linear Assumption and from Progressively Weaker Linear Variants},
    howpublished = {Cryptology ePrint Archive, Report 2007/074},
    year = {2007},
    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.