Cryptology ePrint Archive: BibTeX Citation of Report 2013/236

@misc{cryptoeprint:2013:236,
    author = {Kaitai Liang and Liming Fang and Duncan S. Wong and Willy Susilo},
    title = {A Ciphertext-Policy Attribute-Based Proxy Re-Encryption with Chosen-Ciphertext Security},
    howpublished = {Cryptology ePrint Archive, Report 2013/236},
    year = {2013},
    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.