Image security is very important to protect from any unauthorised user access. In this paper a two-phase secure image encryption has been proposed using the concepts of Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA). First, the plain image is encrypted based on DNA rules, DNA XOR operator, and chaotic map function in DNA phase and initial cipher image is created. Next, the cipher image is used as the input of RNA phase so that codons truth table for RNA and secret key are exploited for further image encryption. The proposed method has high resistance against common attacks in the field and achieved entropy of 7.9994. The implementation of the proposed method is available on https://github.com/mehdim7/RNA-DNA-Image-Encryption.

图像安全对于防止未经授权的用户访问非常重要。在本文中，使用脱氧核糖核酸（DNA）和核糖核酸（RNA）的概念提出了两阶段安全图像加密。首先，基于DNA规则，DNA XOR运算符和DNA相中的混沌图函数对纯图像进行加密，并创建初始密码图像。接下来，将密码图像用作RNA阶段的输入，以便利用RNA的密码子真值表和秘密密钥进行进一步的图像加密。所提方法对现场常见攻击具有较高的抵抗力，熵达到7.9994。建议的方法的实现可在https://github.com/mehdim7/RNA-DNA-Image-Encryption上获得。