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针对以往一些仲裁量子签名(AQS)方案无法抵抗接收者的已知明文攻击的缺点,提出了一种高效抗伪造的AQS方案.在新方案中,签名者将每个EPR(Einstein-Padolsky-Rosen)粒子对中的2个粒子分别发送给签名者和接收者.签名者将该粒子与签名消息纠缠后对其测量,接收者根据收到的粒子串和测量结果恢复消息,并对2个粒子串进行比较判断,以此来保证量子签名的完整性.在签名时,签名者将量子信息通过变量加密后发送给接收者,以保证签名者和接收者都不能对签名进行抵赖.同时,新方案将一种特殊的量子门操作和量子一次一密结合起来以此保证接收者无法进行已知明文攻击.
AQS (AQS) scheme is a highly effective anti-forgery AQS scheme in the past because some AQS schemes can not resist the known plaintext attack of the receiver.In the new scheme, the signer adds each EPR (Einstein-Padolsky-Rosen ) The two particles in the particle pair are sent to the signer and the receiver respectively.The signer measures the particle and the signed message, and the receiver restores the message according to the received particle string and the measurement result, and compares the two particles String in order to ensure the integrity of the quantum signature.In the signature, the signer will be encrypted by variable information sent to the receiver to ensure that the signer and the recipient can not be denied the signature.At the same time, the new The scheme combines a special kind of quantum gate operation with a quantum close-in to ensure that the receiver can not make a known plaintext attack.