@misc{cryptoeprint:2013:231,
    author = {Guido Bertoni and Joan Daemen and Michael Peeters and Gilles Van Assche},
    title = {Sakura: a flexible coding for tree hashing},
    howpublished = {Cryptology ePrint Archive, Report 2013/231},
    year = {2013},
    url = {http://eprint.iacr.org/2013/231},
}