Cryptology ePrint Archive: BibTeX Citation of Report 2005/396

@misc{cryptoeprint:2005:396,
    author = {Pallavi Joshi and Debdeep Mukhopadhyay and Dipanwita RoyChowdhury},
    title = {Design and Analysis of a Robust and Efficient Block Cipher using Cellular Automata},
    howpublished = {Cryptology ePrint Archive, Report 2005/396},
    year = {2005},
    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.