Reversible data hiding method and system based on double images

Abstract

The invention provides a reversible data hiding method and system based on double images, and the method comprises the steps: obtaining a novel turtle shell magic matrix in a mode of adding 8 to the element values of turtle back points on the basis of an original turtle shell magic matrix, enlarging the range of the element values in the matrix, increasing the hiding amount of secret data hidden by the matrix. Meanwhile, a novel reversible hiding algorithm is invented, secret data are converted into hexadecimal numbers to be hidden in the novel turtle shell magic matrix, and secret images corresponding in pairs are obtained; in the secret data extraction stage, a corresponding data extraction rule is formulated according to a novel reversible hiding algorithm to extract secret data, and anoriginal image is recovered. The secret data can be well hidden and the original image can be recovered under the condition that the original image is changed a little, and compared with a traditional data hiding algorithm based on the image, the invention has the advantage that the quality of the hidden image is guaranteed under the condition that the hiding amount is high, so that the secret data can be hidden more safely.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a double-image-based reversible data hiding method and system. Background technique [0002] With the popularization of network technology, it is very convenient for people to communicate and exchange data with others on the network. However, due to the openness of the network, the data transmitted on the network can easily be intercepted, tampered with or destroyed by malicious personnel. Therefore, in order to improve the security of data exchange, a common solution is to encrypt the data to be transmitted. However, due to the complexity of the encryption algorithm, the encryption and decryption process takes a lot of time, and the encrypted data is a bunch of seemingly meaningless gibberish, which is more likely to arouse the suspicion of malicious personnel. Although malicious persons may not be able to crack the data directly, they can destroy the data, resulting ...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the encryption algorithm, the encryption and decryption process takes a lot of time, and the encrypted data is a bunch of seemingly meaningless garbled things, which is more likely to arouse the suspicion of malicious personnel

Although malicious personnel may not be able to directly crack the data, they can destroy the data, resulting in data loss

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