Revisiting the security of quantum dialogue and bidirectional quantum secure direct communication  

作　　者：GAO Fei GUO FenZhuo WEN QiaoYan ZHU FuChen 

机构地区：[1]State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Tele-communications,Beijing 100876,China [2]School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China [3]National Laboratory for Modern Communications,Chengdu 610041,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2008年第5期559-566,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：the National High Technology Research and Development Program of China(Grant No.2006AA01Z419);the National Natural Science Foundation of China(Grant Nos.90604023 and 60373059);the National Research Foundation for the Doctoral Program of Higher Edu- cation of China(Grant No.20040013007);the National Laboratory for Modern Communications Science Foundation of China(Grant No.9140C1101010601);the Natural Science Foundation of Beijing(Grant No.4072020);the ISN Open Foundation

摘　　要：From the perspective of information theory and cryptography,the security of two quantum dialogue protocols and a bidirectional quantum secure direct communi-cation(QSDC) protocol was analyzed,and it was pointed out that the transmitted information would be partly leaked out in them.That is,any eavesdropper can elicit some information about the secrets from the public annunciations of the legal us-ers.This phenomenon should have been strictly forbidden in a quantum secure communication.In fact,this problem exists in quite a few recent proposals and,therefore,it deserves more research attention in the following related study.From the perspective of information theory and cryptography, the security of two quantum dialogue protocols and a bidirectional quantum secure direct communication (QSDC) protocol was analyzed, and it was pointed out that the transmitted information would be partly leaked out in them. That is, any eavesdropper can elicit some information about the secrets from the public annunciations of the legal users. This phenomenon should have been strictly forbidden in a quantum secure communication. In fact, this problem exists in quite a few recent proposals and, therefore, it deserves more research attention in the following related study.

关 键 词：QUANTUM secure direct communication QUANTUM DIALOGUE QUANTUM CRYPTOGRAPHY CRYPTANALYSIS 

分 类 号：O413[理学—理论物理]