An Improved Image Encryption Scheme Using Chaotic Logistic Maps
نویسنده
چکیده
Chaos theory has significantly contributed towards the development of fast and secure image encryption algorithms. Authors in [1] proposed an efficient and secure approach for image encryption based on chaotic logistic maps. The algorithm uses an 80-bit secret key and two chaotic logistic maps, whose initial conditions are derived using the secret key. Depending upon the outcome of logistic maps, algorithm performs any of eight different types of operations on different pixels. To make the algorithm more robust, secret key is modified after encrypting a block of 16-pixels. This paper proposes enhancements in the mentioned algorithm to make it more efficient and secure. The security analysis of the algorithm establishes its utility in real-time image encryption.
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