NOVEL IMAGE ENCRYPTION METHOD BY APPLYING AES MODIFICATION: A REVIEW ARTICLE

Abstract

In this article, based on the updated advanced encryption standard (AES) algorithm, a high-speed and highly restricted encryption algorithm is proposed to encrypt high-definition (HD) images. AES is a well-known block cypher algorithm and has many benefits, such as the ability to enforce high-level protection and deployment. AES, however, has some disadvantages, including high costs of computation, pattern appearance, and high specifications for hardware. When the AES algorithm cyphers an image, especially HD images, the aforementioned issues become more complex. In this paper, three improvements are suggested to improve the efficiency of the AES algorithm by reducing the cost of computing, reducing hardware requirements, and increasing the level of security. First, modification was carried out in 5 rounds using Mix Column transformation instead of 10 rounds in the original AES-128 to reduce the time of encryption. By introducing Mix Column transformation to this operation as a second change, security is improved by enhancing the main schedule operation.