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。
It avoided the disadvantages of traditional cryptography by adopting only two cryptography components: visual cryptography and MAC, and the safety has not been lowered down.
在方案中仅仅使用了视觉密码和消息认证码两个密码组件，在不降低安全性的前提下，有效地避开了传统密码的缺点。
It avoided the disadvantages of traditional cryptography by adopting only two cryptography components: visual cryptography and MAC, and the safety has not been lowered down.
在方案中仅仅使用了视觉密码和消息认证码两个密码组件，在不降低安全性的前提下，有效地避开了传统密码的缺点。
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