Digital Images Security Technique Using Hénon and Piecewise Linear Chaotic Maps

The security of images has become a hot research area due to the widespread usage digital all over world. Literature review on chaotic image cryptography, other hand, indicates that many constructs have been employed for realization confusion operation while developing ciphers. To enhance computational time, this study proposes novel cipher based two maps and rectangle as scrambler. As given grayscale is input, it scrambled through dynamically generated rectangles. modus operandi, these rectangles are created in with various dimensions different location. pixels lying boundary rotated clockwise anticlockwise an arbitrary amount. These operations repeated number times get scrambling effects. further subjected XOR embedding diffusion effects it. Two Hénon piecewise linear map used generation random numbers. numbers help deciding size, location, clockwise/anticlockwise movement amount which be rotated. performance analysis machine simulation validate suggested sufficient enough thwart varied cryptanalytic attacks. In particular, we gained speed 0.5156 seconds information entropy 7.9975. Besides, posit ample prospects its real world application.