区块链技术中高效散列函数的设计与实现  

Design and implementation of efficient hash function in blockchain technology

作　　者：滕飞 李永珍[1] TENG Fei;LI Yongzhen(College of Engineering,Yanbian University,Yanji 133002,China)

机构地区：[1]延边大学工学院,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2021年第3期233-237,共5页Journal of Yanbian University（Natural Science Edition）

摘　　要：为提高传统的SHA-256算法在区块链技术中的计算效率,对传统的SHA-256算法中的迭代结构进行了改进.实验结果表明,在保证数据的安全性下,改进的64次迭代的SHA-256算法和改进的32次迭代的SHA-256算法的计算效率比传统的SHA-256算法分别提高了24%和140%,改进的32次迭代的SHA-256算法的平均计算效率比MD5算法提高了32%.因此,该改进算法可为提高区块链技术的计算效率提供参考.In order to solve the problem that the traditional SHA-256 algorithm has relatively low computational efficiency in blockchain technology,the iterative structure of the traditional SHA-256 algorithm is improved.Experimental results show that the computing efficiency of the improved SHA-256 algorithm with 64 iterations and 32 iterations is 24%and 140%higher than that of the traditional SHA-256 algorithm,respectively,and the SHA-256 algorithm with 32 iterations is 32%higher than that of MD5 algorithm on average,while the security of the improved SHA-256 algorithm is guaranteed.Therefore,the improved algorithm can provide a reference for improving the computational efficiency of blockchain technology.

关 键 词：区块链 哈希函数 SHA-256算法 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]