Method for commutative encryption and watermarking on identical operation domain

Abstract

The invention relates to a method for commutative encryption and watermarking on an identical operation domain. An encryption technology and a digital watermarking technology are seamlessly combined to provide deeper comprehensive protection for multimedia data. In the method, orthogonal code division and separately encryption and watermarking operations are performed in an orthogonal commutationdomain by the principle of code division multiplexing in the field of communication, thereby realizing commutation between the encryption and watermarking operations; and simultaneously, encryption and watermarking operation results are superposed in the same data domain and displayed to a user under the control of orthogonal codes to realize the fusion of encryption and watermarking operation domains. In addition, related encryption operations and digital watermarking operations are not specially required, so a relatively larger space is ensured in specific algorithm designing. By the method, a commutative encryption and watermarking technology is realized on the identical operation domain, the encryption and watermarking operations can be conveniently performed at the same time, and relatively higher security and universality are ensured.

Description

technical field [0001] The invention belongs to the technical field of multimedia information security protection, and in particular relates to a method for exchanging password watermarks in the same operation domain by combining encryption technology and digital watermark technology. Background technique [0002] In today's society with highly developed digitization and networking, more and more attention has been paid to the security of multimedia information. Cryptographic technology and digital watermarking technology provide guarantee for the security of multimedia information from two different angles. Cryptographic technology actively prevents information leakage by converting protected data into unreadable garbled codes. It can protect multimedia information from illegal users during transmission and storage. However, after authorized users decrypt it, the protection of cryptographic technology will no longer exist. . Digital watermarking technology implements passi...

AI Technical Summary

Problems solved by technology

[0005]The purpose of this invention is to propose a new method for implementing the same operation domain exchange cryptographic watermark technology based on orthogonal transformation, which can combine common cryptographic algorithms on the same operation domain And digital watermarking algorithm, effectively solve the shortcomings of the existing operating domain independent exchange password watermarking technology is not high security and operation mechanism independent exchange password watermarking technology is not universal, truly realize the multimedia data content encryption and digital watermark embedded in time and space Integrates seamlessly yet is operationally independent of each other

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