基于(t,n)门限的可防欺骗的图像隐藏方案

An Image Hiding Scheme Preventing Cheat Based on(t,n) Threshold

为了保证秘密图像可以在不安全的网络环境下安全的传输,设计了一个具体完整、实践性强的基于(t,n)门限的可防欺骗的图像隐藏方案。在保证方案的效率及安全性的基础上,通过二次拉格朗日插值算法完成共享秘密的分割以完成(t,n)门限的过程,同时,通过单向散列函数防止了攻击者篡改嵌入了共享秘密后的影子图像,也防止了欺骗者给出虚假的影子图像,保证了秘密的数字图像在不安全的网络环境中的安全传输,具有较好的理论和实践价值。

In order to guarantee the safe transmission of a secret image through an unsafe network, this paper proposes a new preventing cheat image hiding scheme based on（ t, n ）threshold, that is complete and practicable. On the base of guaranteeing the efficiency and security of this scheme, it applies the method of Lagrange Interpolating Polynomial to divide the share secret and to complete the （ t, n ） threshold process. On the same time, it applies Hash function to prevent cheater tampering the image that contains the share secret and to prevent cheater giving false shadow image. So it guarantees the safe transmission of a secret image through an unsafe network, it is valuable in theory and practice.