@misc{cryptoeprint:2010:574,
    author = {Julia Borghoff and Lars R. Knudsen and Gregor Leander and Soeren S. Thomsen},
    title = {Cryptanalysis of PRESENT-like ciphers with secret S-boxes},
    howpublished = {Cryptology ePrint Archive, Report 2010/574},
    year = {2010},
    url = {http://eprint.iacr.org/2010/574},
}