中文摘要：

基于 Schnorr 签名计划，有非否认的一个新签名计划被建议。在这个计划，仅仅签名人；指明的接收装置能证实签名由签名人签名了，；如果必要，两签名人；指明的接收装置能证明；证明签名的有效性由签名人签名了。签名的有效性的证明是不相关的；可转让。验证；证明签名的有效性，签名人；提名的接收装置不必除签名以外存储额外的信息。同时，既不签名人也不指明的接收装置能否认有效签名签名了。然后，在这个新签名计划没有否认。根据这个计划的安全分析，它被发现建议计划对在适应选择消息攻击以后的存在伪造品是安全的。

英文摘要：

Based on the Schnorr signature scheme, a new signature scheme with non-repudiation is proposed. In this scheme, only the signer and the designated receiver can verify the signature signed by the signer, and if necessary, both the signer and the designated receiver can prove and show the validity of the signature signed by the signer. The proof of the validity of the signature is noninteractive and transferable. To verify and prove the validity of the signature, the signer and the nominated receiver needn＇t store extra information besides the signature. At the same time, neither the signer nor the designated receiver can deny a valid signature signed. Then, there is no repudiation in this new signature scheme. According to the security analysis of this scheme, it is found the proposed scheme is secure against existential forgery on adaptive chosen message attack.