Cryptology ePrint Archive: BibTeX Citation of Report 2015/112

@misc{cryptoeprint:2015:112,
    author = {Satsuya Ohata and Yutaka Kawai and Takahiro Matsuda and Goichiro Hanaoka and Kanta Matsuura},
    title = {Re-encryption Verifiability: How to Detect Malicious Activities of a Proxy in Proxy Re-encryption},
    howpublished = {Cryptology ePrint Archive, Report 2015/112},
    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.