Cryptology ePrint Archive: BibTeX Citation of Report 2013/834

@misc{cryptoeprint:2013:834,
    author = {Ahto Buldas and Andres Kroonmaa and Risto Laanoja},
    title = {Keyless Signatures' Infrastructure: How to Build Global Distributed Hash-Trees},
    howpublished = {Cryptology ePrint Archive, Report 2013/834},
    year = {2013},
    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.