Encryption/decryption method and system based on image transmission

Abstract

The embodiment of the invention discloses an encryption method based on image transmission. The method comprises the steps as follows: the MD5 value of the digital image of a picture to be encrypted is calculated and obtained according to the fifth edition of message abstract algorithm; the pixel array of the digital image is analyzed; according to the block sequence of the pixel, XOR operation of the pixel array formed by blocks including 16 pixels and the MD5 value is carried out, and an encryption image is formed; and the encryption image is transmitted to a decryption end. The invention also discloses a decryption method and an encryption / decryption system based on image transmission, by implementing the embodiment of the invention, the algorithm is easy to achieve, the algorithm load is low, the application is variable, the effect is good, the completeness function of the verification image is achieved, and at the same time, safe transmission of the image is ensured.

Description

technical field [0001] The invention relates to the technical field of digital home, in particular to an encryption and decryption method and system based on image transmission. Background technique [0002] With the rapid development of network and computer technology, long-distance information transmission has become more and more simple, which has led to the diversity of working methods in various fields of society. For example, in the medical field, remote expert consultation is a special business developed in recent years. This service has not only improved the level of medical technology in some small and medium-sized cities, but also saved time and transportation costs for expert consultation. When experts make remote diagnosis, the patient's pathological pictures (such as X-ray films, etc.) play a vital role in the diagnosis results, so the requirements for pathological pictures are very high, often requiring very fine pictures, and at the same time, it is necessary...

AI Technical Summary

Problems solved by technology

[0006] Based on the problems existing in the prior art, the embodiment of the present invention provides an encryption and decryption method and system based on image transmission, which solves the problems of malicious tampering and transmission errors in the image transmission process, and uses image bit encryption technology to convert the image The MD5 value itself is used as an encrypted periodic sequence, and a unique encryption method is used to encrypt the image in a reasonable and orderly manner, so as to achieve the purpose of secure image transmission

This algorithm is easy to implement, has a small amount of calculation, has various applications, and has good effects. It solves the problem of image security while realizing the function of verifying image integrity.

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