中文摘要：

现有环签名方案的构造或基于ROM模型,或基于标准模型,但其效率较低。基于群结构保持签名和Groth-Sahai证明系统,提出一种基于标准模型的高效环签名构建方案。签名大小为常数,签名与验证的效率高于现有标准模型下的环签名方案,结合群签名的良好特性,在出现争议的情形下其匿名性是可撤销的。

英文摘要：

At present,the constructions of ring signature scheme were mostly based on ROM model,or based on standard model,which have low efficiency.According to structure preserving signature and Groth-Sahai proof system,an efficient ring signature scheme based on standard model was presented.The signature size of the scheme is constant,and the scheme is more efficient than existed ring signature in standard model.Moreover,the anonymity of signer can be revoked when necessary.