Cryptology ePrint Archive: BibTeX Citation of Report 2014/552

@misc{cryptoeprint:2014:552,
    author = {Ahto Buldas and Ahto Truu and Risto Laanoja and Rainer Gerhards},
    title = {Efficient Record-Level Keyless Signatures for Audit Logs},
    howpublished = {Cryptology ePrint Archive, Report 2014/552},
    year = {2014},
    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.