Image Texture-Based New Cryptography Scheme Using Advanced Encryption Standard

摘要

Encapsulation of information using mathematical barrier for forbidding malicious access is a traditional approach from past to modern era of information technology. Recent advancement in security field is not restricted to the traditional symmetric and asymmetric cryptography; rather, immense security algorithms were proposed in the recent past, from which biometric-based security, steganography, visual cryptography, etc. gained prominent focus within research communities. In this paper, we have proposed a robust cryptographic scheme to original message. First, each message byte, the ASCII characters ranging from Space (ASCII-32) to Tilde (ASCII-126), is represented as object using flat texture in a binary image which is decorated as n by n geometrical-shaped object in images of size N × N. Create a chaotic arrangement pattern by using the prime number encrypted by Advanced Encryption Standard (AES). The sub-images are shuffled and united as rows and columns to form a host covert or cipher image which looks like a grid-structured image where each sub-grid represents the coded information. The performance of the proposed method has been analyzed with empirical examples.