@misc{cryptoeprint:2004:373,
    author = {Chunming Tang and Dingyi Pei and Zhuojun Liu},
    title = {Delegateable Signature Using Witness Indistinguishable and Witness Hiding Proofs},
    howpublished = {Cryptology ePrint Archive, Report 2004/373},
    year = {2004},
    url = {http://eprint.iacr.org/2004/373},
}