Abstract:
This paper introduces (k, n)-threshold visual cryptography scheme ((k, n)-VCS, for short), based on which visual cryptography scheme with trusted authority ((k, n)-TAVCS, for short) is proposed with actual application as background. Namely, under the control of secret key, any at least k images can only recover the secret image with the approval of trusted authority. It retains the merit of (k, n)-VCS. This guarantees security and satisfies the actual need simultaneously. The plan is carried on the certain analysis, and the simulation results are given.
Key words:
visual cryptography,
secret sharing,
RSA,
Arnold transformation
摘要: 介绍了(k ,n)门限可视密码分享方案((k ,n)-VCS),在此基础上以实际应用为背景,提出了具有可信仲裁者的可视密码分享方案((k ,n)-TAVCS)。通过密钥的控制,任意至少k幅的图像必须经过可信仲裁者的认可才可恢复出秘密图像,保留了(k ,n)-VCS的优点,在确保安全性的同时满足实际应用的需要。对该方案进行了分析,给出了仿真实验的结果。
关键词:
可视密码,
秘密分享,
RSA,
Arnold变换
CLC Number:
CHEN Yan-mei; ZHANG Sheng-yuan. Visual Cryptography Scheme with Trusted Authority[J]. Computer Engineering, 2007, 33(17): 171-172,.
陈燕梅;张胜元. 具有可信仲裁者的可视密码分享方案[J]. 计算机工程, 2007, 33(17): 171-172,.