Cryptology ePrint Archive: BibTeX Citation of Report 2015/665

@misc{cryptoeprint:2015:665,
    author = {Romain Gay and Iordanis Kerenidis and Hoeteck Wee},
    title = {Communication Complexity of Conditional Disclosure of Secrets and Attribute-Based Encryption.},
    howpublished = {Cryptology ePrint Archive, Report 2015/665},
    year = {2015},
    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.