@misc{cryptoeprint:2009:497,
    author = {Piotr Mroczkowski and Janusz Szmidt},
    title = {Cube Attack on Courtois Toy Cipher},
    howpublished = {Cryptology ePrint Archive, Report 2009/497},
    year = {2009},
    url = {http://eprint.iacr.org/2009/497},
}