@misc{cryptoeprint:2012:402,
    author = {Juan Manuel Gonz{\'a}lez Nieto and Mark Manulis and Dongdong Sun},
    title = {Forward-Secure Hierarchical Predicate Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2012/402},
    year = {2012},
    url = {http://eprint.iacr.org/2012/402},
}