Abstract: Aiming at the problems of poor encryption security and long encryption time in the existing enterprise financial data encryption, a fast encryption method of enterprise financial data based on blockchain is proposed. Firstly, the enterprise financial data is collected from the enterprise source database with the help of ETL Technology, and the collection is completed with the help of full extraction; Then, the interference data in the data is filtered with the help of Bloom filter, and the data index position is determined with the help of hash function mapping to complete the preprocessing. Finally, with the help of the data layer, network layer, consensus layer, motivation layer and application layer in the blockchain, the data and related encrypted data and timestamp are encrypted in each node, and the data encryption key is generated to complete the rapid encryption of enterprise financial data. The experimental results show that the security coefficient of enterprise financial data encrypted by the proposed method is high, and the encryption time is short.
Keywords: Blockchain, ETL technology, full extraction, hash function mapping, time stamp, key generation
