Multi Image Encryption Technique Based on Permutation of Chaotic System
Noora Shihab Ahmed Collage of Science, Department of Computer Science, Halabja University Halabja, Kurdistan, Iraq noora.ahmed1982@gmail.com Abstract The key stream generator is the key design issue of an encryption system. In this work presents an n array three key stream generators (KSI, KSII and KSIII) Based on permutation of three chaotic maps (Logistic map, Kent map and tent map) This work reviews of some image encryption algorithm and finally investigate three methods for image encryption. First algorithm is encryption of original image by using KSI system. Second algorithm relies on KSII system to randomly generate two sequences of numbers by means of selecting proper factors along with seed value. Afterwards, the randomly produced numbers are employed to permute the image by means of shuffling its rows, columns and pixels sequentially in a manner by which first sequence is utilized to shuffle rows while second sequence is utilized to shuffle columns. Afterwards masking process is achieved by means of basic XOR processes between neighboring rows and columns. This technique employs the values of the two sequences together to shuffle the pixels. Third algorithm relies on KSIII system when the same procedures returned on image encryption. The results shows that the proposed algorithm has a high security, speed and gives perfect reconstruction of the decrypted image