@misc{cryptoeprint:2011:228,
    author = {Jan Camenisch and Stephan Krenn and Victor Shoup},
    title = {A Framework for Practical Universally Composable Zero-Knowledge Protocols},
    howpublished = {Cryptology ePrint Archive, Report 2011/228},
    year = {2011},
    url = {http://eprint.iacr.org/2011/228},
}