基于随机Radon变换的DRPE加密系统

Double Random-phase Encoding Encryption System Based on Random Radon Transform

摘要:

对于使用随机相位模板(RPM)作为密钥的双随机相位编码(DRPE)加密系统,唯密文攻击算法(COA)是一种有效的攻击算法。为了提高DRPE加密系统抵抗COA算法攻击的能力,提出了一种基于随机Radon变换的JTC加密系统。该系统对待加密图像进行随机Radon变换,再使用JTC加密系统对其加、解密。除了DRPE加密系统中的RPM密钥之外,Radon变换参数亦被用作恢复原始图像的密钥。仿真结果表明,相比于仅使用RPM密钥的DRPE加密系统,基于随机Radon变换的DRPE加密系统可以有效抵抗COA算法攻击,提高加密系统的安全性。

Abstract:

The ciphertext only attack algorithm (COA) is an effective attack algorithm for the double random-phase encoding (DRPE) encryption system using random phase mask (RPM) as the key. In order to improve the ability of DRPE encryption system to resist ciphertext only attack algorithm attack, a DRPE encryption system based on random Radon transform is proposed. The system performs random Radon transform on the image to be encrypted and then encrypts it using the DRPE encryption system. In addition to RPM, a set of random parameters selected by the random Radon transform is used as a new key for successfully recovery the original image. The simulation results show that the DRPE encryption system based on Radon transform can effectively resist the COA algorithm and improve the security of the DRPE encryption system compared to the DRPE encryption system using only RPM as the key.