@misc{cryptoeprint:2004:028,
    author = {Joseph K. Liu and Victor K. Wei and Duncan S. Wong},
    title = {Custodian-Hiding Verifiable Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2004/028},
    year = {2004},
    url = {http://eprint.iacr.org/2004/028},
}