Electronic evidence storage and collection system and method based on block chain

Abstract

The invention discloses an electronic evidence storage and collection system and method based on a block chain. The system comprises an evidence storage module and an evidence collection module. The evidence storage module comprises a first user login module, an identity verification module, an evidence uploading module, an on-chain storage module and an off-chain storage module; the evidence obtaining module comprises a second user login module, an authority authentication module, an automatic evidence obtaining module and a screen recording evidence obtaining module. Various evidences are uploaded through the evidence storage module, and the main body part of the file is stored in the distributed file system under the chain through the on-chain storage module and the off-chain storage module, so that the block chain storage pressure is relieved, and the storage efficiency of the system is improved. According to the method, evidence obtaining operation is performed through the evidence obtaining module, illegal users are filtered through the authority authentication module, automatic downloading and storage of evidences are realized through automatic evidence obtaining and screen recording evidence obtaining, screen recording recording is performed on the whole evidence obtaining process, and the whole recording process is uploaded to the block chain, so that legality and security of the whole electronic evidence obtaining process are realized.

Description

technical field [0001] The invention relates to a block chain-based electronic deposit and withdrawal system and method, belonging to the technical field of electronic deposit and withdrawal. Background technique [0002] Traditionally, electronic evidence storage simply means that electronic evidence is encrypted and stored in a credible third party, and information such as time stamp and operator is bound to prove the existence of the source information. It requires unconditional trust in the third party in the process of deposit, forensics and verification. In this way, the authority of the third party is too concentrated. If the third party maliciously tampers or deletes the data, it cannot be verified, and the data cannot be guaranteed to be true and reliable. In contrast, blockchain depository distributes such excessive authority to all node participants through the chain structure and distributed consensus mechanism of the blockchain, avoiding the possibility of malic...

AI Technical Summary

Problems solved by technology

[0003] However, the data management function provided by the blockchain itself is simple, and the amount of calculation is huge. As the amount of data gradually increases, the storage capacity of the blockchain is under pressure.

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