Research And Design Of Encrypted Information Backup System Based On Blockchain

With the rapid development of information technology,people have entered the era of information explosion,interpersonal cooperation,competition and trust is based on the information as carrier.Information resource is the most valuable resource.Once the information is lost,it will cause heavy losses.The traditional way of recording information cannot prove that the information belongs.As the information is easy to leak or loss.People live in an environment where information cannot be completely trusted,and the legitimate rights and interests are threatened.Block chain as the core technology of bitcoin,which can deal with the mutual trust between people,as well as between people and system,which has made a significant attempt to protect user information security.Based on the idea of block chain technology,this paper designs a set of encrypted information backup system,and uses Node.js and related components to complete the development and system testing.The core functionality of the encrypted information backup system aims to assist user to backup important text information.Encrypted information will be stored in all application nodes,as well nodes are all around the world.Moreover,each node has a complete copy of the latest data.At the same time,this paper has improved the convenience of the system,designed and implemented the user private key encryption and backup and text information security and other functions.This paper designs a distributed data storage strategy based on P2P network to ensure that user backup text information is not lost.The signature verification technology based on elliptic curve algorithm is used to realize the information ownership authentication.Using secure encryption and decryption technology aims to ensure the security of the user information.The effective consensus mechanism is designed to ensure the normal operation of the system,and the application nodes can be accessed remotely so that the user can operate the text information anywhere at any time.Based on the application innovation of block chain technology,this paper proves the technical feasibility and safety and reliability of block chain in the process of decentralized text information management.