可防止欺骗的可视密码分享方案  

A Cheater Detectable Visual Cryptography Scheme

作　　者：颜浩[1] 甘志[1] 陈克非[1] 

机构地区：[1]上海交通大学计算机科学与工程系,上海200030

出　　处：《上海交通大学学报》2004年第1期107-110,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(69973031;90104005);国家高技术研究发展计划(863)项目(2001AA144060)

摘　　要：提出了一种可以检测出一个欺骗者的(k,n)门限的可视密码的定义和构造方法,并证明了其安全性.当存在一个欺骗者出示了假的分享时将导致秘密恢复失败,这种构造方法可以检测出谁是欺骗者,其特点如一般的可视密码分享方案.参与者手中只要保存一份分享图像,不需要额外的信息,并且检测欺骗者的过程只需要k次胶片叠加,体现了可视密码使用方便性的原则.This paper gave the definition and constructing method of visual cryptography which can examine a cheater from the (k,n) threshold, and proved its security. It will result in failure when there exists a cheater who provides a pseudo share shadow, and the cheater will be found by the method. Just as the common visual cryptography share schemes, every participant keeps only a shared picture without extra information, when examining the cheater, the only operation is to splice the different k films of shared picture, which reflects the convenient principle of visual cryptography.

关 键 词：可视密码 秘密分享 欺骗者 

分 类 号：TN918.2[电子电信—通信与信息系统]