Y-00协议LO-KO攻击的研究  

Study of Lo-Ko Attack on Y-00 Protocol

作　　者：龚明[1,2] 李之棠[1] 

机构地区：[1]华中科技大学计算机学院 [2]深圳市翠园中学,广东深圳518003

出　　处：《小型微型计算机系统》2006年第12期2276-2279,共4页Journal of Chinese Computer Systems

摘　　要：针对“Y-00协议”的LO-KO攻击被认为得不到足够的拷贝数,以及拷贝的振幅小于接受者信号的振幅,因而攻击是无效的.但在增加了信号放大或概率克隆的手段之后,克服了LO-KO攻击的这些不足,使得LO-KO攻击仍然是成立的.Because Eve cannot get enough copies which is able to decide the key and the amplitude of Eve＇s quantum state sequences is smaller than that of Bob, Lo-Ko attack on Y-00 protocol is considered to be ineffective. However, the shortcomings of Lo-Ko attack may be overcome after using quantum amplification or probabilistic clone. So modified Lo-Ko attack is still effective.

关 键 词：量子加密 Y—00协议 LO—KO攻击 量子放大 概率克隆 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TN918.1[自动化与计算机技术—计算机科学与技术]