Cryptology ePrint Archive: BibTeX Citation of Report 2005/020

@misc{cryptoeprint:2005:020,
    author = {R. Janvier and Y. Lakhnech and L. Mazare},
    title = {(De)Compositions of Cryptographic Schemes and their Applications to Protocols},
    howpublished = {Cryptology ePrint Archive, Report 2005/020},
    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.