Cryptology ePrint Archive: BibTeX Citation of Report 2007/121

@misc{cryptoeprint:2007:121,
    author = {Alexander W. Dent and Benoit Libert and Kenneth G. Paterson},
    title = {Certificateless Encryption Schemes Strongly Secure in the Standard Model},
    howpublished = {Cryptology ePrint Archive, Report 2007/121},
    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.