Blockchain is widely used in encrypted currency, Internet of Things (IoT), supply chain finance, data sharing, and other fields. However, there are security problems in blockchains to varying degrees. As an important component of blockchain, hash function has relatively low computational efficiency. Therefore, this paper proposes a new scheme to optimize the blockchain hashing algorithm based on PRCA (Proactive Reconfigurable Computing Architecture). In order to improve the calculation performance of hashing function, the paper realizes the pipeline hashing algorithm and optimizes the efficiency of communication facilities and network data transmission by combining blockchains with mimic computers. Meanwhile, to ensure the security of data information, this paper chooses lightweight hashing algorithm to do multiple hashing and transforms the hash algorithm structure as well. The experimental results show that the scheme given in the paper not only improves the security of blockchains but also improves the efficiency of data processing.

中文翻译：

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基于PRCA的区块链哈希算法优化研究

区块链广泛用于加密货币，物联网（IoT），供应链金融，数据共享和其他领域。但是，区块链在不同程度上存在安全问题。哈希函数作为区块链的重要组成部分，其计算效率较低。因此，本文提出了一种基于PRCA（主动可重构计算架构）的优化区块链哈希算法的新方案。为了提高哈希函数的计算性能，将区块链与模拟计算机相结合，实现了管道哈希算法，优化了通信设施和网络数据传输的效率。同时，为了确保数据信息的安全性，本文选择轻量级的哈希算法进行多重哈希，并对哈希算法的结构也进行了转换。实验结果表明，本文提出的方案不仅提高了区块链的安全性，而且提高了数据处理效率。