基于新的二粒子纠缠态的仲裁量子签名协议

ARBITRATED QUANTUM SIGNATURE PROTOCOL BASED ON NEW TWO-PARTICLE ENTANGLED STATE

综合考虑量子纠缠、量子态的比较、量子操作等,提出一种基于新的二粒子纠缠的仲裁量子签名协议。利用隐形传态的原理将未知的量子传递到接受者手中,再对其进行相应的酉变化来恢复原信息。方案中有第三方的参与使得方案更安全,又利用具有很好性质的二粒子纠缠态,使得方案简单安全可行。同时算法利用一次一密加密算法加密保障了签名的不可伪造性,通过仲裁者的参与及量子密钥有效解决了双方的抵赖问题。

Comprehensively considering the quantum entanglement, comparison of the quantum states, quantum operations, etc. , in the paper we present a new two-particle entangled state-based arbitrated quantum signature protocol. It employs teleportation principle to transfer the unknown quantum to the recipient, and then recovers the original message by applying the corresponding unitary transformation on it. In the scheme there is the third-party participated, this makes the scheme more secure. Moreover, it utilises the two-particle entangled state with very good property to make the scheme simple, safe and feasible. Meanwhile the algorithm uses the encryption algorithm of one-time pad to guarantee the unforgeability of the signature. The repudiation problem is effectively solved by the participation of the arbiter and the quantum key.