Data blind signature evidence preservation method and system based on multiple hash algorithms

Abstract

The invention provides a data blind signature evidence preservation method and system based on multiple hash algorithms. The data blind signature evidence preservation method based on the multiple hash algorithms comprises the following steps: determining raw data that needs to perform evidence preservation; encoding the raw data into a readable data block according to a format pre-negotiated with a signatory; enabling the readable data block to calculate a hash value of the readable data block according to a hash algorithm combination list pre-negotiated with the signatory to obtain a corresponding hash value list; and sending the identification number of the raw data, the size of the readable data block, the hash algorithm combination list and the hash value list to the signatory. According to the data blind signature evidence preservation method and system provided by the invention, the data side does not need to send the raw data to the signatory, and thus the user privacy and business secrets can be effectively protected; and moreover, the reliability of the system can be improved by adopting the multiple hash algorithms.

Description

technical field [0001] The invention relates to the field of data certificate storage, in particular to a method and system for storing blind data signatures based on multiple hash algorithms. Background technique [0002] With the rapid development of the Internet industry, electronic data has gradually replaced paper materials and has become the main carrier for the new development of various traditional industries. Its advantages such as high efficiency and easy storage are obvious; however, in the judicial process, electronic data The characteristics of easy modification without trace and easy loss have become the biggest problems affecting its becoming evidence. In order to make up for these shortcomings, the copy method is commonly used in the market to deposit electronic data, that is, when the electronic data is generated, a copy of the data is delivered to an independent depository party for storage. When the electronic data needs to become evidence in the future, t...

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Problems solved by technology

[0003] However, in some scenarios, the amount of copy data is large, and the burden of saving copies is heavy, which is not conducive to the efficiency of the certificate storage system.

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