@misc{cryptoeprint:2015:256,
    author = {Yang Lu, Quanling Zhang, Jiguo Li},
    title = {Cryptanalysis of Three Certificate-Based Authenticated Key Agreement Protocols and a Secure Construction},
    howpublished = {Cryptology ePrint Archive, Report 2015/256},
    year = {2015},
    url = {https://eprint.iacr.org/2015/256},
}