@misc{cryptoeprint:2008:387,
    author = {Xu an Wang  and  Xiaoyuan Yang },
    title = {On the Insecurity of Proxy Re-encryption from IBE to IBE in P1363.3/D1},
    howpublished = {Cryptology ePrint Archive, Report 2008/387},
    year = {2008},
    url = {http://eprint.iacr.org/2008/387},
}