@misc{cryptoeprint:2011:116,
    author = {Long Nguyen and Andrew William Roscoe},
    title = {On the construction of digest functions for manual authentication protocols},
    howpublished = {Cryptology ePrint Archive, Report 2011/116},
    year = {2011},
    url = {http://eprint.iacr.org/2011/116},
}