Aim for commercial business on line or bidding on line which need group sig9ature system, a revocation signature is proposed in this paper, which combines the signature certification and revocation voucher to improve the security of signature system.

• 摘要针对电子商务或电子竞标系统中需要多人签名的系统，采用一种拥有废止机制的签名，通过把签名验证和废止成员凭证结合起来，提高签名系统的安全性。