@misc{cryptoeprint:2002:104,
    author = {Anton Kozlov and Leonid Reyzin},
    title = {Forward-Secure Signatures with Fast Key Update},
    howpublished = {Cryptology ePrint Archive, Report 2002/104},
    year = {2002},
    url = {http://eprint.iacr.org/2002/104},
}