@misc{cryptoeprint:2008:067,
    author = {David Cash and Eike Kiltz and Victor Shoup},
    title = {The Twin Diffie-Hellman Problem and Applications},
    howpublished = {Cryptology ePrint Archive, Report 2008/067},
    year = {2008},
    url = {http://eprint.iacr.org/2008/067},
}