Cryptology ePrint Archive: BibTeX Citation of Report 2007/028

@misc{cryptoeprint:2007:028,
    author = {Debrup Chakraborty and Palash Sarkar},
    title = {HCH: A New Tweakable Enciphering Scheme Using the Hash-Counter-Hash Approach},
    howpublished = {Cryptology ePrint Archive, Report 2007/028},
    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.