New Generated Keys of the AES Algorithm Based on the SHA256 Algorithm for Image Encryption

Abstract

To prevent unauthorized access to digital data, stronger encryption solutions are needed. The Advanced Encryption Standard is instrumental to cryptographic security, but this reliance on traditional forms of key generation risks undoing its potency. In order to fulfill this effect that the research presents its new work for another version of AES key generation with SHA256. Using the high entropy of SHA256, we generate even more complicated and unpredictable keys that drastically raises resilience to cryptographic attacks. We demonstrate this with a Python implementation of our proposed method along with experiments on image data which show significantly increased encryption strength over standard AES, whilst having similar performance. This research represents an additional step toward developing safer methods of encryption that safeguard data.