@misc{cryptoeprint:2006:353,
    author = {Zhenjie Huang and Kefei Chen and Yumin Wang},
    title = {Analysis and Improvements of Two Identity-Based Perfect Concurrent Signature Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2006/353},
    year = {2006},
    url = {http://eprint.iacr.org/2006/353},
}