-种基于组合混沌的无线体域网加密方案.

To address the defects of high complexity, large power consumption and poor practicability of current WBAN security schemes, this paper proposed a combined chaotic flow encryption scheme to meet the requirements of high security and low power consumption in WBAN. The algorithm consisted of three quantization accuracy, it firstly used tent map to interfere with the orbit of logistic map and generate chaotic sequences, then generated the key stream by combining the m sequences with good equilibrium and autocorrelation, and finally got the ciphertext after the XOR operation with the plaintext. This paper used Verilog hardware description language to describe the algorithm and implemented board level verification on FPGA. Through the security test of standard gray image, the information entropy of encrypted image reached 7. 999 4, and the correlation coefficient of adjacent pixels was close to 0. The results show that the algorithm has better correlation and higher information entropy compared with the existing algorithms. [ABSTRACT FROM AUTHOR]