@misc{cryptoeprint:2007:071,
    author = {Ahto Buldas and Sven Laur},
    title = {Knowledge-Binding Commitments with Applications in Time-Stamping (Full Version)},
    howpublished = {Cryptology ePrint Archive, Report 2007/071},
    year = {2007},
    url = {http://eprint.iacr.org/2007/071},
}