@misc{cryptoeprint:2004:338,
    author = {Yumiko Hanaoka and Goichiro Hanaoka and Junji Shikata and Hideki Imai},
    title = {Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application},
    howpublished = {Cryptology ePrint Archive, Report 2004/338},
    year = {2004},
    url = {http://eprint.iacr.org/2004/338},
}