@misc{cryptoeprint:2012:635,
    author = {Jin Li and Jingwei Li and Xiaofeng Chen and Chunfu Jia and Duncan S. Wong},
    title = {Secure Outsourced Attribute-based Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2012/635},
    year = {2012},
    url = {http://eprint.iacr.org/2012/635},
}