Cryptology ePrint Archive: BibTeX Citation of Report 2011/585

@misc{cryptoeprint:2011:585,
    author = {Emil Stefanov and Marten van Dijk and Alina Oprea and Ari Juels},
    title = {Iris: A Scalable Cloud File System with Efficient Integrity Checks},
    howpublished = {Cryptology ePrint Archive, Report 2011/585},
    year = {2011},
    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.