@misc{cryptoeprint:2001:091,
    author = {Ivan Damgård and Jesper B. Nielsen},
    title = {Perfect Hiding and Perfect Binding Universally Composable Commitment Schemes with Constant Expansion Factor},
    howpublished = {Cryptology ePrint Archive, Report 2001/091},
    year = {2001},
    url = {http://eprint.iacr.org/2001/091},
}