Cryptanalysis of Quantum Secure Direct Communication and Authentication Scheme via Bell States

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2011,（2）
• 页码范围: 31-34
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/28/2/020303

摘要

The security of the quantum secure direct communication (QSDC) and authentication protocol based on Bell states is analyzed.It is shown that an eavesdropper can invalidate the authentication function, and implement a successful man-in-the-middle attack, where he/she can obtain or even modify the transmitted secret without introducing any error.The particular attack strategy is demonstrated and an improved protocol is presented.