A Novel Image Encryption Scheme Based on DNA Coding and Multi-Chaotic Maps
Abstract:In this paper, a novel image encryption scheme based on DNA coding and multi-chaotic maps is proposed. By combining XOR, XNOR, bit shift with some biologic operations, the security of the encryption algorithm is enhanced effectively. Two chaotic maps are utilized in this paper. One is used to control the operations which should be operated, and the other involves in computing. Firstly, the pixel values of the plain-image converts 8 bit binary numbers, and they are encoded by biological coding as 'A T C G', these codes will be divided into different blocks dynamically. Chaotic sequences also do the same operation. Then, we define some operation rules which can be used between explicit and chaotic sequences. The encryption algorithm can resist the statistical and differential attacks effectively. Moreover, the algorithm has a large key space. The effectiveness of the proposed algorithm is proved by numerical simulations.
Document Type: Research Article
Publication date: December 1, 2010
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