@misc{cryptoeprint:2008:010,
    author = {Jacques Patarin},
    title = {A Proof of Security in O(2^n)  for the  Xor of  Two Random Permutations},
    howpublished = {Cryptology ePrint Archive, Report 2008/010},
    year = {2008},
    url = {http://eprint.iacr.org/2008/010},
}