@misc{cryptoeprint:2008:001,
    author = {Shengbao Wang and Zhenfu Cao and Kim-Kwang Raymond Choo and Lihua Wang},
    title = {Security Proof for the Improved Ryu-Yoon-Yoo Identity-Based Key Agreement Protocol},
    howpublished = {Cryptology ePrint Archive, Report 2008/001},
    year = {2008},
    url = {http://eprint.iacr.org/2008/001},
}