@misc{cryptoeprint:2006:368,
    author = {Man Ho Au and Joseph K. Liu and Tsz Hon Yuen and Duncan S. Wong},
    title = {Practical Hierarchical Identity Based Encryption and Signature schemes Without Random Oracles},
    howpublished = {Cryptology ePrint Archive, Report 2006/368},
    year = {2006},
    url = {http://eprint.iacr.org/2006/368},
}