Chaos-Based Synchronized Dynamic Keys and Their Application to Image Encryption with an Improved AES Algorithm
| Autor: | Chih-Hsueh Lin, Jun-Juh Yan, Che-Yu Chan, Guo-Hsin Hu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
02 engineering and technology Communications system Encryption lcsh:Technology Sliding mode control lcsh:Chemistry Synchronization (computer science) 0202 electrical engineering electronic engineering information engineering Cryptosystem Static key dynamic random key General Materials Science lcsh:QH301-705.5 Instrumentation Computer Science::Cryptography and Security Fluid Flow and Transfer Processes advanced encryption standard lcsh:T business.industry Process Chemistry and Technology Advanced Encryption Standard General Engineering 020206 networking & telecommunications image encryption rippling sliding mode control lcsh:QC1-999 Computer Science Applications CHAOS (operating system) lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 020201 artificial intelligence & image processing lcsh:Engineering (General). Civil engineering (General) business Algorithm synchronization lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 3 Applied Sciences, Vol 11, Iss 1329, p 1329 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11031329 |
| Popis: | This study aimed to design chaos-based synchronized dynamic keys and develop an improved chaos-based advanced encryption standard (AES) algorithm with the proposed synchronized random keys. First, based on sliding mode control (SMC) technology, a rippling control scheme was introduced to guarantee the synchronization between master–slave discrete chaotic systems. Under the synchronization, the same dynamic random chaos signals could be simultaneously obtained at the transmitter and receiver in communication systems. Then, a novel modified AES cryptosystem with dynamic random keys based on chaos synchronization was presented. In a traditional AES cryptosystem, a static key is used, and it must be exchanged in advance and confirmed to be safely kept. However, in the proposed design, by introducing the synchronization technology of chaotic systems, the static key becomes dynamic and random, and it does not need to be kept or transmitted in open channels. Consequently, the disadvantage of key storage could be eliminated and the security of encryption could be improved. Finally, the developed chaos-based AES (CAES) algorithm has been applied to construct a novel image encryption algorithm. The statistical analysis, histogram, information entropy, and correlation indexes have been calculated and analyzed through simulation experiments in order to demonstrate the capability and improvement of this presented CAES cryptosystem. |
| Databáze: | OpenAIRE |
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