Text Encryption and Decryption Algorithm Based on Fractional Chaotic System and Digital Circuit Implementation
The 21st century is the information age,so information security has attracted much attention.Aiming at this problem,a text encryption and decryption algorithm based on three dimensional fractional chaotic system is proposed.Based on the definition of Grünwald-Letnikov derivative,four three dimensional fractional order chaotic models are constructed by discrete numerical method.After the circuit is built,a fractional-order chaotic system is randomly selected to generate a chaot-ic sequence during use,and the key series is constructed.Then the text information and the key series of the sender and receiv-er are XOR processed to realize the encryption and decryption of the text,so as to realize the wireless secure communication between the two STM32s.The test results show that the algorithm has good encryption effect and security.
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维普
