A method and device for securely processing image information

Abstract

The present invention proposes a method and device for safely processing image information, the method comprising: a collection step, the first client uses an image collection device to collect N time-series images Ti, and an encryption step, using Encrypted by the first encryption algorithm and the second encryption algorithm to obtain encrypted N images eTi; in the transmission step, the first client sends the encrypted N images eTi to the second client. The present invention uses two encryption algorithms to encrypt each image based on different eigenvalues, and the two encryption algorithms consume different system resources, that is, the key part of the image can use an encryption algorithm that consumes more system resources For encryption, the general part of the image is encrypted using an encryption algorithm that consumes less system resources, which saves computing resources of the terminal while ensuring image security.

Description

technical field [0001] The invention relates to the technical field of data security, in particular to a method and device for securely processing image information. Background technique [0002] In the prior art, the same encryption algorithm is used to encrypt the same image. If the required security is high, the encryption algorithm consumes more system resources, and there is no one that reduces the consumption of system resources without reducing image security. Sexual encryption method, this is a major defect in the prior art. [0003] In the prior art, there are schemes to encrypt different parts of a document using different encryption methods. However, images are more complex than documents, and document encryption methods are not suitable for image encryption. [0004] In the prior art, no simple and efficient image segmentation strategy and criteria for judging different encryption methods are proposed, or the calculation method is complicated, which has no pract...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the same encryption algorithm is used to encrypt the same image. If the required security is high, the encryption algorithm consumes more system resources, and there is no one that reduces the consumption of system resources without reducing image security. unique encryption method, which is a major flaw in the prior art

[0003] In the prior art, there are schemes to encrypt different parts of the document using different encryption methods. However, the image is more complex than the document, and the encryption method of the document is not suitable for the encryption of the image.

[0004] In the prior art, no simple and efficient image segmentation strategy and judging criteria for different encryption methods are proposed, or the calculation method is complicated, which has no practical application value at all

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