@misc{cryptoeprint:2005:180,
    author = {XU Chunxiang and ZHOU Junhui and QIN Zhiguang},
    title = {A Note on Secure Key Issuing in ID-based Cryptography},
    howpublished = {Cryptology ePrint Archive, Report 2005/180},
    year = {2005},
    url = {http://eprint.iacr.org/2005/180},
}