具有可信仲裁者的可视密码分享方案

Visual Cryptography Scheme with Trusted Authority

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。

This paper introduces （k. n）-threshold visual cryptography scheme （（k, n）-VCS, for short）, based on which visual cryptography scheme v, ith 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.