Lightweight Stream Cipher Based on Time-Varying Mutual Coupling Double Chaotic System
Aiming at the problem of data encryption transmission in the resource-limited Internet of Things environment,this paper designed a lightweight stream cipher based on time-varying mutual coupling double chaotic system.Based on the chaotic maps of Tent and Arnold,a time-varying double chaotic system for updating the internal state of stream cipher is constructed by introducing accumulators and coupling terms.Based on bit operation,the output part of key stream is designed.This paper designed the basic operation,parameters,accuracy,implementation mode and strategy of the algorithm and implemented it on FPGA.The consumption of hardware resources is 2370 GE,and the output rate of key stream is 1.68bit/clk.The analysis shows that this cipher has good security and anti-attack ability.Compared with the lightweight stream ciphers of ISO/IEC standard,it has obvious advantages in security,resource consumption and throughput.
Internet of thingsdouble chaotic systemlightweightdegeneratestream cipher
NETL
NSTL
万方数据
