Science Bulletin ( IF 18.9 ) Pub Date : 2018-09-15 , DOI: 10.1016/j.scib.2018.09.009 Peng-Hao Niu 1 , Zeng-Rong Zhou 1 , Zai-Sheng Lin 2 , Yu-Bo Sheng 3 , Liu-Guo Yin 2 , Gui-Lu Long 4
Security in communication is vital in modern life. At present, security is realized by an encryption process in cryptography. It is unbelievable if a secure communication is achievable without encryption. In quantum cryptography, there is a unique form of quantum communication, quantum secure direct communication, where secret information is transmitted directly over a quantum channel. Quantum secure direct communication is drastically distinct from our conventional concept of secure communication, because it does not require key distribution, key storage and ciphertext transmission, and eliminates the encryption procedure completely. Hence it avoids in principle all the security loopholes associated with key and ciphertext in traditional secure communications. For practical implementation, defects always exist in real devices and it may downgrade the security. Among the various device imperfections, those with the measurement devices are the most prominent and serious ones. Here we report a measurement-device-independent quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs. This protocol eradicates the security vulnerabilities associated with the measurement device, and greatly enhances the practical security of quantum secure direct communication. In addition to the security advantage, this protocol has an extended communication distance, and a high communication capacity.
中文翻译:
无需加密的独立于测量设备的量子通信
通信安全在现代生活中至关重要。目前,安全性是通过密码学中的加密过程来实现的。如果没有加密就可以实现安全通信,这是令人难以置信的。在量子密码学中,有一种独特的量子通信形式,即量子安全直接通信,其中秘密信息直接通过量子信道传输。量子安全直接通信与我们传统的安全通信概念截然不同,因为它不需要密钥分发、密钥存储和密文传输,完全取消了加密过程。因此,它原则上避免了传统安全通信中与密钥和密文相关的所有安全漏洞。对于实际实施,实际设备中始终存在缺陷,可能会降低安全性。在各种设备缺陷中,测量设备缺陷最为突出和严重。在这里,我们报告了一种使用 Einstein-Podolsky-Rosen 对的独立于测量设备的量子安全直接通信协议。该协议消除了与测量设备相关的安全漏洞,大大提高了量子安全直接通信的实用安全性。除了安全优势外,该协议还具有扩展的通信距离和高通信容量。在这里,我们报告了一种使用 Einstein-Podolsky-Rosen 对的独立于测量设备的量子安全直接通信协议。该协议消除了与测量设备相关的安全漏洞,大大提高了量子安全直接通信的实用安全性。除了安全优势外,该协议还具有扩展的通信距离和高通信容量。在这里,我们报告了一种使用 Einstein-Podolsky-Rosen 对的独立于测量设备的量子安全直接通信协议。该协议消除了与测量设备相关的安全漏洞,大大提高了量子安全直接通信的实用安全性。除了安全优势外,该协议还具有扩展的通信距离和高通信容量。