@MISC{CourtoisNN-2008-eprint,
    author = {Courtois, Nicolas T. and Nohl, Karsten and O'Neil, Sean},
    title = {{Algebraic Attacks on the Crypto-1 Stream Cipher in MiFare Classic and Oyster Cards}},
    howpublished = {Cryptology ePrint Archive, Report 2008/166},
    year = {2008},
    organization  = {IACR},
   bibsource     = {Information Security Group (GSI), UCL, Louvain-la-Neuve, Belgium},
}