Cryptology ePrint Archive: BibTeX Citation of Report 2008/320

@misc{cryptoeprint:2008:320,
    author = {Danilo Gligoroski and Smile Markovski and Svein J. Knapskog},
    title = {Public Key Block Cipher Based on Multivariate Quadratic Quasigroups},
    howpublished = {Cryptology ePrint Archive, Report 2008/320},
    year = {2008},
    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.