加密算法优化对无人机的CPU功耗影响研究

Research on Effect of Encryption Algorithm Optimization for Power Consumption of UAVs' CPU

数据安全传输和功率消耗问题是无人机自组织网络(Unmanned Ad Hoc Network,UANET)中不容忽视的研究主题.在UANET环境中,现有的数据传输加密算法的应用越来越广泛.本文首先介绍了Blow fish、AES、GOST R 34.12-2015这3种加密算法;接着在保证算法安全性能的前提下,分别对Blowfish和GOST算法进行了优化,减小Blowfish算法的迭代次数,降低GOST算法的预处理数据的运算表数量;然后通过NS-3仿真平台模拟各种算法的执行时间、吞吐量及功率消耗情况,并对比了无人机CPU模块和无线电模块的功耗情况.对比结果表明:优化后的算法在处理数据传输时,加密和解密时间明显缩短,吞吐量均有显著提升,各无人机节点的CPU功率消耗均明显下降.可见,优化后的加密算法使UANET更节能.

The issues of data security transmission and power consumption are the subject of research that can＇t be ignored in Un- manned Ad Hoc Network. Information security can be guaranteed by the commonly used encryption algorithm. However, a large a- mount of resource consumption can be caused easily. Firstly, the Blowfish, AES,GOST R 34.12-2015 three encryption algorithrns are introduced in the paper. Then, under the premise of maintain security performance, the number of iterations is reduced for Blowfish al- gorithm and the number of operation table about pre-processing data is decreased in GOST algorithm. In addition, the execution time, throughput and power consumption of various algorithms are simulated using NS-3 simulation platform. Besides, the comparison results about the energy consumption of the CPU and radio module of mini-UAV are presented when performing secure in process. According to the experimental results, the time of encryption and decryption is shorter, the throughput is improved and the power consumption of each node on the UAV＇s CPU is decreased obviously, which shows the power consumption of mini-UAV＇s CPU is reduced and the optimized aigorithm is more energy efficient.