@misc{cryptoeprint:2013:228,
    author = {Kwangsu Lee and Woo Kwon Koo and Dong Hoon Lee and Jong Hwan Park},
    title = {Public-Key Revocation and Tracing Schemes with Subset Difference Methods},
    howpublished = {Cryptology ePrint Archive, Report 2013/228},
    year = {2013},
    url = {http://eprint.iacr.org/2013/228},
}