基于再生密钥的量子安全通信方法

该文在分析传统保密通信方法、基于量子密钥发布机制的量子安全通信方法和目前已知的两种直接量子安全通信方案的不足的基础上，提出一种新颖的基于再生密钥的直接量子安全通信方案，该方案在量子密钥发布技术所要求的信道条件下，根据自治动力系统伪随机数发生器生成的再生密钥，选择量子比特的制备基并对明文进行加密，实现内容可控的直接量子安全通信，该文的方案不要求一条始终存在的不可阻塞经典信道，具有较高的安全性和传输、处理效率，且物理实现简单。

A Quantum Direct Security Communication Protocol Based on Regenerative Keys

Supposed quantum super-Turing computation power is a potential threat against most classical cryptography methods. To deal with the challenge, several quantum cryptology methods, which are presumed far much secure than their classical counterpart, have been proposed. But current quantum cryptology methods are persecuted by some disadvantages. On the one hand, although the quantum cryptology method based on quantum key distribution is available in state of the art technology, it is inferior in transmission efficiency and requires a persistently unjammable classical channel, which is not always convenient. Besides, it does not support the direct quantum secure communication. On the other hand, there are a few direct quantum secure communication methods, which might be effective in theory and support direct quantum information transmission. But according to our knowledge, all of them are complicated or difficult in contemporaneous technology. The paper proposed a novel design to try to overcome the above weakness. Our method produces iteratively a regenerative key by means of an autonomous dynamical system, encrypts and prepares the qubits, utilizing the previous generated key. This new solution achieves direct quantum secure communication and avoids the need for a permanent classical channel. Moreover, it is more efficient in transmitting, processing, and available in the state of art technology.