There are cheating problems in visual cryptography as in other secret sharing schemes.
同其它秘密共享方案一样,视觉密码也面临着欺骗的威胁。
参考来源 - 防欺骗视觉密码的目标优化研究Visual Cryptography which provides a way to share a secret black-white image was first introduced by Naor and Shamir at EUROCRYPT '94.
可视密码是1994年由Naor和Shamir在欧洲密码学术会议上首次提出的适用于黑白图像的秘密共享方案。
参考来源 - 可视密码方案中欺骗与防欺骗的研究This visual cryptography scheme obtains n shares without pixel expansion. After processing with reversing, c (c is a positive integer) shares are distributed to a participant.
该方案采用(k,n)-概率可视分存方案得到没有像素膨胀的分存图,对每幅分存图通过反色可视分存方案进行处理后分发给每个参与者c幅分存图(c为正整数)。
参考来源 - 基于反色技术的概率可视分存方案In the second part,an anonymous access control scheme based on roles and visual cryptography is introduced.
第二部分则介绍了一种基于角色和视觉密码的匿名访问控制方案。
参考来源 - 证书认证系统的设计及访问控制研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
An efficient and credible authentication schema was constructed based on the visual cryptography.
基于视觉密码体制构造了一个高效、可靠的身份认证方案。
Visual cryptography scheme has its shortcomings: the contrast and resolution are decreased, and the pixel expansion makes the size of the share transparencies very big.
针对图视密码学方案存在的恢复图像的对比度和清晰度降低，且像素扩展太大，生成分存图像太大的缺点。
The design of above scheme is extended to the so-called "general access structure", a general reconstructed scheme is proposed for the existing visual cryptography schemes.
将上述方案的设计思想扩展到所谓的“一般存取结构”，对现有的可视密码方案提出了一个一般性的改造方案。
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