Data encryption method and device

Abstract

The embodiment of the invention provides a data encryption method and device, and the method is executed by first equipment, and comprises the steps: obtaining a target image; selecting n first pixels from the pixels included in the target image; for any first pixel, obtaining a first value based on the color component corresponding to the first pixel; taking the position index of any first pixel in the target image as an abscissa, and taking a first numerical value corresponding to the first pixel as an ordinate to obtain a coordinate point in the coordinate system; the n first pixels correspond to n coordinate points; utilizing the n coordinate points to obtain m straight lines according to a preset straight line generation rule; and converting the to-be-encrypted data into encrypted data according to a preset conversion rule and a function relationship between the horizontal coordinate and the vertical coordinate corresponding to at least one straight line in the m straight lines. The requirement of the data encryption method for the equipment performance can be reduced, and high safety is still achieved.

Description

technical field [0001] One or more embodiments of this specification relate to the computer field, and in particular, to a data encryption method and device. Background technique [0002] Data encryption is a reliable method for computer systems to protect information. It uses cryptographic technology to encrypt information and realize information concealment, thereby protecting the security of information. [0003] At present, data encryption technology mainly uses symmetric or asymmetric algorithms to encrypt data, such as DES, 3DES, AES, RSA and national secret algorithms, etc., and its core is to encrypt data through key combination algorithms. [0004] In existing technical solutions, data encryption methods usually use complex algorithms, which have high requirements on device performance. Many devices cannot use this data encryption method. For example, some embedded devices or Internet of Things devices have problems such as insufficient computing power or difficult...

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