Data destruction method, device and equipment and readable storage medium

Abstract

The invention discloses a data destruction method, device and equipment and a readable storage medium. The method disclosed by the invention comprises the following steps: if a data destruction instruction is received, determining a storage position of to-be-destructed data according to the data destruction instruction; processing the target data by using a Knuth-Durstenfeld Shuffle algorithm to obtain disordered data, and performing overwriting operation on the storage position by using the disordered data; and processing the disordered data by using a hash direct remainder method to obtain atarget hash value, and performing overwriting operation on the storage position again by using the target hash value. The data destruction method and device can improve the data destruction efficiency, reduce the possibility that the destructed data is recovered, and improve the security of the destructed data. Correspondingly, the invention also discloses a data destruction device and equipmentand a readable storage medium, which also have the above technical effects.

Description

technical field [0001] The present application relates to the technical field of data security, in particular to a method, device, equipment and readable storage medium for destroying data. Background technique [0002] If the confidential data in the storage medium is invalid, generally do not perform a simple format or delete operation, but destroy it, so as to ensure that the data cannot be restored, thereby ensuring the security of the confidential data. [0003] Currently, data can be destroyed by using an overwrite operation. The overwriting operation is to write the non-confidential data into the storage location where the sensitive data was stored before, so that the non-confidential data completely covers the sensitive data. Existing standards for overwriting operations include: USDoD5220.22_M, US DoD5220.22_MECE, RCMP TSSITOPS, Canadian OPS, RussianG0STP50739-95, Gutmann, etc. These standards first generate a meaningless overwrite sequence according to the establ...

AI Technical Summary

Problems solved by technology

Among them, the overwriting sequence is generated according to a predetermined algorithm, which leads to a certain decipherability of the overwriting sequence, and the possibility of recovery after the data is overwritten, thus reducing data security; moreover, the existing technology also needs to store these generated Overwrite sequence, which will take up some storage space and computer resources, resulting in a waste of computer resources

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