密文
计算机科学
计算机安全
加密
密码分析
密码系统
水印攻击
脆弱性(计算)
基于属性的加密
公钥密码术
作者
Sheng Yuan,Lanjie Wang,Xuemei Liu,Xin Zhou
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2020-07-09
卷期号:45 (14): 3917-3917
被引量:31
摘要
Attack techniques on a cryptosystem include not only cryptanalysis, but also forgery and modification of messages, deception and confusion on both sender and receiver sides, and so on. In this Letter, we show that an optical encryption system based on computational ghost imaging (CGI) has security vulnerability owing to its high tolerance for error deviation of ciphertext. It leaves a chance for a forgery attack in which attackers can forge a set of fake keys according to the intercepted ciphertext. If the forged key can be transmitted to the receiver by some disguised means, he/she may be cheated or confused by the retrieved fake images. The discovery of this vulnerability may also help upgrade the CGI-based encryption system.
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