Cryptology ePrint Archive: BibTeX Citation of Report 2007/009

@misc{cryptoeprint:2007:009,
    author = {Zhenfu Cao, Xiaolei Dong and Licheng Wang},
    title = {New Public Key Cryptosystems Using Polynomials over Non-commutative Rings},
    howpublished = {Cryptology ePrint Archive, Report 2007/009},
    year = {2007},
    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.