@misc{cryptoeprint:2003:261,
    author = {Javier Herranz and Germ\'an S\'aez},
    title = {A provably secure ID-based ring signature scheme},
    howpublished = {Cryptology ePrint Archive, Report 2003/261},
    year = {2003},
    url = {http://eprint.iacr.org/2003/261},
}