Cryptology ePrint Archive: BibTeX Citation of Report 2010/248

@misc{cryptoeprint:2010:248,
    author = {Alex Biryukov and Ivica Nikoli\'c},
    title = {Automatic Search for Related-Key Differential Characteristics in Byte-Oriented Block Ciphers: Application to AES, Camellia, Khazad and Others},
    howpublished = {Cryptology ePrint Archive, Report 2010/248},
    year = {2010},
    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.