@misc{cryptoeprint:2010:648,
    author = {Dario Fiore and Dominique Schröder},
    title = {Uniqueness is a Different Story: Impossibility of Verifiable Random Functions from Trapdoor Permutations},
    howpublished = {Cryptology ePrint Archive, Report 2010/648},
    year = {2010},
    url = {http://eprint.iacr.org/2010/648},
}