Modified MASK Algorithm for Image Encryption

AES a symmetric block cipher is suitable for high speed application. The throughput as one of the bottleneck for huge data size such as image. Another symmetric block cipher MASK, a matrix based encryption technique, also suitable for high speed application with speed eight times that of AES. The proposed work discuses about AES and MASK algorithm and compares in terms of encryption speed, diffusion, confusion and statistical attacks. Based on the analysis a Modified MASK algorithm is designed to overcome the security weakness in MASK algorithm. A hardware implementation of Modified MASK algorithm is done and validated.