基于有限域运算的图像加密算法

An image encryption algorithm based on binary finite field operation

在数据加密标准中,AES是目前比较先进的商用加密标准。在AES算法中,有限域理论是算法的核心,具有安全性高的特点,但单独应用有限域运算使得加密速度显著降低。基于此,将以有限域算法为基础,结合混沌映射,提出一种基于有限域和混沌理论的图像加密算法。利用混沌理论的快速性和安全性,以及有限域具有的安全性,实现图像加密的安全性。通过实验分析可以得出,算法具有加密效果好、抗剪切攻击、抗噪声攻击、加密速度快、安全程度高的特点。

In the data encryption standard, AES is a relatively advanced commercial encryption standard. In the AES algorithm, the finite field theory is the core of the algorithm, which has the characteristic of high security. Only using finite field operations can make the encryption speed significantly reduced. Based on this, it proposes an image encryption algorithm based on chaos theory and finite domain, which is combined with the chaotic mapping and binary finite field. Chaos theory has rapidity and security, as well as the finite field, so the image encryption has the character of security. Through the experimental analysis, the algorithm has good encryption effect, speed, high degree of safety features. anti-attacking, anti-noise attack, and encryption