@misc{cryptoeprint:2014:616,
    author = {Zhen Liu and Duncan S. Wong},
    title = {Practical Attribute-Based Encryption: Traitor Tracing, Revocation, and Large Universe},
    howpublished = {Cryptology ePrint Archive, Report 2014/616},
    year = {2014},
    url = {https://eprint.iacr.org/2014/616},
}