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

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.