A Parallel Image Encryption Method Based on Hybrid Chaotic Technique
International journal of intelligent engineering and systems · 2024
Encrypting images is crucial for several reasons, as protection against identity theft, privacy and data integrity, particularly in today's digital age where visual data is extensively shared and stored.Where Advanced Encryption Standard, Rivest-Shamir-Adleman algorithms and others, suffer from some drawbacks, as proper management of encryption keys and computationally expensive.Using chaotic systems for image encryption with parallel algorithms, offers several unique advantages.this article presents a novel design for a chaos-based parallel encryption algorithm.The proposed encryption method consists of Generate keys stage, The permutation stage and Diffusion stage.Where the dividing the image into several threads, creating keys from hyper chaotic, and employing parallel processing to handle the threads.Each portion of the image is encrypted using a different thread, Subsequently, the operation is finished by combining the encrypted portions.Experimental results are shown using test images (512*512 and 256*256) from the USC-SIPI and CVG-UGR databases.were quicker outcomes and more secure encryption.In addition, the information entropy screening rate reached 7.999319, which is close to the optimal ratio of 8.The average execution time of encryption and decryption reached (0.01154 ms, 0.02416 ms) and NPCR and UACI reached (99.643, 33.4798).The algorithm has achieved a high level of security.