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Data encryption and decryption method, device, equipment, system and medium

An encryption device and data encryption technology, applied in the field of information security, can solve the problem of low data security, achieve the effects of improving security, reducing the probability of being cracked by violence, and reducing the probability of key loss

Pending Publication Date: 2021-01-15
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In this way, when the above-mentioned secret key is lost, or when the above-mentioned encrypted data is cracked violently, all the data stored in the entire hard disk will be exposed, resulting in low data security

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  • Data encryption and decryption method, device, equipment, system and medium
  • Data encryption and decryption method, device, equipment, system and medium
  • Data encryption and decryption method, device, equipment, system and medium

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] In order to solve the problem of low security of encrypted encrypted data in the prior art, an embodiment of the present invention provides a data encryption method. The method is applied to an encryption device, obtains the first secret key, and obtains the data to be encrypted; obtains the second secret key of each data segment in the data to be encrypted; for each data segment, uses the first secret key as an encryption key pair Encrypt the data segm...

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Abstract

The embodiment of the invention provides a data encryption and decryption method, device, equipment, system and medium. The scheme is as follows: enabling encryption equipment to acquire a first secret key and acquire to-be-encrypted data; obtaining a second secret key of each data segment in the to-be-encrypted data; and for each data segment, encrypting the second secret key of the data segmentby taking the first secret key as an encryption secret key to obtain a ciphertext, encrypting the data segment by taking the second secret key of the data segment as an encryption secret key to obtainencrypted data, and obtaining an encryption result containing the ciphertext and the encrypted data. According to the technical scheme provided by the embodiment of the invention, the probability that all encrypted data are violently cracked is effectively reduced, and the probability that the secret key is lost is reduced, so that the security of the data is improved.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular to a data encryption and decryption method, device, equipment, system and medium. Background technique [0002] During data processing, in order to improve data security, data is often encrypted. Taking all the data stored in the entire hard disk as the original data to be encrypted as an example, in the prior art, the entire original data is often encrypted with a secret key as the encryption key, so as to obtain encrypted data. Moreover, when decrypting the encrypted data, it is necessary to use the same key as the decryption key to decrypt the encrypted data, so as to obtain the original data. [0003] In this way, when the above-mentioned secret key is lost, or when the above-mentioned encrypted data is cracked violently, all data stored in the entire hard disk will be exposed, resulting in low data security. Contents of the invention [0004] The purpos...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/08
CPCH04L63/0428H04L9/0825H04L9/0822
Inventor 李伟
Owner HANGZHOU HIKVISION DIGITAL TECH
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