@misc{cryptoeprint:2009:057,
    author = {Gregory M. Zaverucha and Douglas R. Stinson},
    title = {Anonymity in Shared Symmetric Key Primitives},
    howpublished = {Cryptology ePrint Archive, Report 2009/057},
    year = {2009},
    url = {http://eprint.iacr.org/2009/057},
}