Chaos-based colour image encryption using microcontroller ATMEGA 32

Abstract

The present chapter describes the encryption algorithm of a colour image using microcontroller ATMEGA 32. Two microcontrollers are used as driver and driven systems in transmitter and receiver sides. One-dimensional logistic map is used in both the cases for generating the chaotic sequence and synchronization between them through open plus closed loop (OPCL) coupling. Under the synchronized condition, the data file of the input image is encrypted and transmitted to the receiver side. The receiver microcontroller received this encrypted data and using the reverse technique it decrypted the data and send to LCD display to reconstruct the input image. The proposed technique is verified through different images and the results confirm the validity of the algorithm.