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中文摘要：
基于可控的量子隐形传态,提出一个以四粒子cluster态为量子信道的量子多重代理盲签名方案。首先代理签名人U_j对他拥有的粒子进行Bell基测量,产生代理申请;然后原始签名Charlie对自己的粒子进行Bell基测量来授权U_j进行签名;最后验证者Bob进行相应的幺正变换验证签名。与已有的方案相比,此方案只需四粒子cluster态为量子信道,可以较少的资源和更大的安全性完成量子多重代理盲签名。安全性分析表明该方案满足不可伪造性、不可否认性、盲性以及无条件安全性。
英文摘要：
Based on the controlled quantum teleportation,this paper proposed a quantum multi-proxy blind signature scheme in which four-particle cluster state functions as quantum channel. First,the proxy signer U_j performs Bell-measurement on his particles generate proxy application. Second,the original signer Charlie performs Bell-measurement on his particles to authorize U_j to complete the signature. Finally,the verifier Bob can verify the signature by performing one unitary transformation. Compared with the existing schemes,this scheme only needs a four-particle cluster state as quantum channel to complete the quantum multi-proxy blind signature with less resources and greater security. Security analysis shows that the scheme can meet the requirements of undeniability,unforgeability,blindness and unconditional security.
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