New image encryption algorithm based on block chaotic encryption | ||
| Journal of College of Education | ||
| Article 1, Volume 0, Issue 1, November 2017, Pages 381-397 | ||
| Authors | ||
| Hilal Hadi Saleh; Luma Fayeq Jalil; Ekhlas Abass Albhrany | ||
| Abstract | ||
| In this paper, we propose new image encryption algorithm based on block chaotic cipher. Algorithm, A new block cipher algorithm is introduced, which encrypts and decrypts a block size of 64 (8×8) byte. In this algorithm, we used S-box that we previously designed by using 2d logistic map and cross chaotic map. Each block is first permuted by using standard map and then substituted by the bytes in S-box. The resulted block is then Xored with the key. A random key generator based on tent map is proposed to generate the key sequences that used in the encryption and decryption process. Results, the result from key space analysis, differential attack analysis, information entropy analysis, correlation analysis of two adjacent pixels have proven that the proposed algorithm can resist cryptanalytic, statistical and brute force attacks, and achieve higher level of security | ||
| Keywords | ||
| Image encryption; block chaotic cipher; d logistic map; cross map; Boxes; tent map | ||
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