A data checking method and computing device

Abstract

The invention discloses a data checking method, which is executed in a computing device, comprising the steps of: acquiring a plurality of block files corresponding to file data, the plurality of block files including process data generated during the data checking process; checking deleted blocks Whether the file exists in the deletion list to determine whether the deleted block file is restored; calculate the hash values ​​of multiple block files respectively, and calculate the root hash value to be verified according to the hash values ​​of multiple block files; and The root hash value to be verified is compared with the root hash value stored in the computing device to determine whether the file data has been modified. The invention also discloses corresponding computing equipment. According to the data inspection method of the present invention, it is beneficial to improve the efficiency of data integrity inspection and ensure data security.

Description

technical field

[0001] The invention relates to the field of computer technology, in particular to a data checking method and computing equipment. Background technique

[0002] At present, when encrypting metadata, file data is generally divided into block files of a fixed size in order to prevent data information leakage. For an attacker, even if they obtain these block files, they cannot obtain information such as the directory structure, file name, and file size of the metadata. However, during the transmission or storage of these encrypted block files, the data content may still be tampered by the attacker. The specific tampering methods include, for example, modifying the data at the back of the block file, replacing it with an old version of the block file, and restoring that it has been deleted. block files etc.

[0003] According to the solution in the prior art, ID check is added in the block file. Specifically, the program generates a random ID value as the file...

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