@misc{cryptoeprint:2005:149,
    author = {Aldar C-F. Chan and Ian F. Blake},
    title = {Conditionally Verifiable Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2005/149},
    year = {2005},
    url = {http://eprint.iacr.org/2005/149},
}