Cryptology ePrint Archive: BibTeX Citation of Report 2012/145

@misc{cryptoeprint:2012:145,
    author = {Shigeo Tsujii and Kohtaro Tadaki and Masahito Gotaishi and Ryou Fujita},
    title = {Construction of the Tsujii-Shamir-Kasahara (TSK) Type Multivariate Public Key Cryptosystem, which relies on the Difficulty of Prime Factorization},
    howpublished = {Cryptology ePrint Archive, Report 2012/145},
    year = {2012},
    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.