Cryptology ePrint Archive: BibTeX Citation of Report 2009/371

@misc{cryptoeprint:2009:371,
    author = {Rakesh Bobba and Himanshu Khurana and Manoj Prabhakaran},
    title = {Attribute-Sets: A Practically Motivated Enhancement to Attribute-Based Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2009/371},
    year = {2009},
    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.