A blockchain-based data tamper-proof system and method thereof

Abstract

The invention discloses a data temper-proofing system based on a blockchain and a method thereof. The data tamper-proofing system is characterized by comprising a client and a server side, wherein theclient comprises a data uploading module and a data query module; the server side consists of a portal and N servers; and any ith server comprises an ith single-block verification module and an ith periodical blockchain verification module. Through adoption of the data tamper-proofing system and the method thereof, the possibility of tamping or destroying data from inside or outside can be lowered effectively, and the data security and credibility are improved. Moreover, a light-weight client is provided, so that the deployment difficulty of the system is lowered.

Description

Technical field [0001] The invention relates to the field of data anti-tampering, in particular to a block chain-based data anti-tampering system and method. Background technique [0002] At present, there are mainly two data tamper-proof technologies, one is digital watermarking technology, and the other is digital signature. [0003] Digital watermarking technology refers to the use of signal processing methods to embed hidden marks in digitized multimedia data; such marks are usually invisible and can only be extracted by a dedicated detector or reader. When the data has been tampered with, it can be judged whether the data has been tampered with according to the state of the watermark. However, digital watermarking technology has the following drawbacks: [0004] (1) It is required that the embedded position of the watermark in digital works must be sufficiently concealed; [0005] (2) After experiencing a variety of unintentional or intentional signal processing procedures, the...

AI Technical Summary

Problems solved by technology

[0005] (2) After undergoing a variety of unintentional or intentional signal processing processes, digital watermarks are prone to failure due to signal distortion;

[0006] (3) When the digital watermark is used for anti-counterfeiting labels, special physical equipment is required to identify the digital watermark, which increases the cost;

[0007] (4) The modification and editing of information can easily affect or even destroy the watermark;

[0010] (1) It is difficult to guarantee the security of the pre-generated summary information;

[0011] (2) For the attacker, there is a possibility of brute force attack to find the private key;

[0012] (3) It is difficult to prevent tampering by internal administrators;

[0013] (4) Even if the distributed database is used to save data backup, due to the small number of databases, the data may still be tampered with

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