Data encryption method and data encryption device

Abstract

The application discloses a data encryption method and a data encryption device. The method comprises the steps of: acquiring one group of unique random numbers generated after a static random access memory is powered off; and performing the encryption protection to clear data stored in a nonvolatile storage space by using the random numbers. The method of the application utilizes the physical property of the static random access memory to generate one group of unique random numbers to encrypt the clear data; thus, the security of the data can be protected at source by using the random numbers that are not known by the outside; the data is encrypted and cannot be copied; and the security of the data is improved.

Description

technical field [0001] The invention relates to the technical field of encryption, in particular to a data encryption method and a data encryption device. Background technique [0002] Currently, there are two ways to store data: [0003] The first method is to directly store plaintext data in the non-volatile storage space; however, if the plaintext data is directly stored in the non-volatile storage space, if there is a data leak, the customer's information will be directly displayed without any delay. no safety at all; [0004] The second method is to simply encrypt the data and store it in the non-volatile storage space. It specifically uses cryptographic technology to encrypt the data to realize data concealment, thereby protecting the security of the data; however, some products Using ciphertext to encrypt and store data has a series of problems such as key protection and maintenance. [0005] Therefore, how to improve data security is a technical problem to be solv...

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Problems solved by technology

[0003] The first method is to directly store plaintext data in the non-volatile storage space; however, if the plaintext data is directly stored in the non-volatile storage space, if there is a data leak, the customer's information will be directly displayed without any delay. no safety at all;

[0004] The second method is to simply encrypt the data and store it in the non-volatile storage space. It specifically uses cryptographic technology to encrypt the data to realize data concealment, thereby protecting the security of the data; however, some products Using ciphertext to encrypt and store data, there are a series of problems such as key protection and maintenance

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