Pavičić Mladen
Center of Excellence for Advanced Materials (CEMS), Ruđer Bošković Institute, Research Unit Photonics and Quantum Optics, Zagreb, Croatia and Nanooptics, Department of Physics, Humboldt-Universität zu Berlin, Berlin, Germany.
Nanoscale Res Lett. 2017 Sep 26;12(1):552. doi: 10.1186/s11671-017-2314-3.
We consider attacks on two-way quantum key distribution protocols in which an undetectable eavesdropper copies all messages in the message mode. We show that under the attacks, there is no disturbance in the message mode and that the mutual information between the sender and the receiver is always constant and equal to one. It follows that recent proofs of security for two-way protocols cannot be considered complete since they do not cover the considered attacks.
我们考虑对双向量子密钥分发协议的攻击，其中不可检测的窃听者以消息模式复制所有消息。我们表明，在这种攻击下，消息模式不会受到干扰，并且发送方和接收方之间的互信息始终恒定且等于1。由此可见，最近关于双向协议的安全性证明不能被认为是完整的，因为它们没有涵盖所考虑的攻击。
