@misc{cryptoeprint:2012:330,
    author = {Xu ZiJie  and  Xu Ke},
    title = {A Way Reduce Signed Bitwise Differences that Transformed Into Same Modular Differences},
    howpublished = {Cryptology ePrint Archive, Report 2012/330},
    year = {2012},
    url = {http://eprint.iacr.org/2012/330},
}