@misc{cryptoeprint:2007:145,
    author = {Iftach Haitner and Jonathan J. Hoch and Omer Reingold and Gil Segev},
    title = {Finding Collisions in Interactive Protocols -- A Tight Lower Bound on the Round Complexity of Statistically-Hiding Commitments},
    howpublished = {Cryptology ePrint Archive, Report 2007/145},
    year = {2007},
    url = {http://eprint.iacr.org/2007/145},
}