Journal
IETE TECHNICAL REVIEW
Volume 27, Issue 4, Pages 318-325Publisher
TAYLOR & FRANCIS LTD
DOI: 10.4103/0256-4602.64605
Keywords
Attack; Chaos; Chuas circuit; Image encryption; Memristor; Security
Funding
- National Natural Science Foundation of China (NSFC) [60702025]
- Research Fund for the Doctoral Program of Higher Education (RFDP) [20070613024]
- Sichuan Youth Science & Technology Foundation of China [07ZQ026-004]
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An image encryption algorithm based on the chaotic system has been increasingly used, but the disadvantages of small key space, weak security in low dimensional chaotic cryptosystems, simple chaotic system, and inconvenient for hardware implementation, are obvious. This paper presents a new image encryption algorithm based on chaos with the PWL memristor in Chuas circuit. This encryption algorithm includes two main operations of image scrambling and pixel replacement. Simulations show that the key space is large, and the attacker cannot decrypt an encrypted image without the correct key. The encryption algorithm has high-level security.
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