基于纠缠交换的量子信息签名方案

Signature Scheme Based on Qantum Entanglement Swapping

该文提出了一种利用纠缠粒子对交换的量子信息签名方案。在该签名方案中,Alice根据消息的编码对自己的纠缠粒子对作一局域操作,在与系统管理员及Bob进行粒子对交换后测量的结果即为消息的签名,Bob根据三方测量结果可以验证签名。该方案具有绝对的安全性,可以应用在量子通信网络中,同时还具有量子身份认证的功能,并且在现有技术条件上完全能够实现。

In this paper, an quantum signature scheme is presented which based on the entanglement swapping. In this scheme, Alice performs a local unitary operation on her two qubits according to message code, after swapping qubits with administrator and Bob, Alice gets the signature by measure her qubits, Bob can verify signature via the measurement outcomes of three sides. This scheme is secure absolutely, it can be applied in a quantum communication network, as well as quantum identification, and it is easy to realize by the present-day technologies.