Research On Digital Copyright Protection Method Based On Public Key Encryption

With the advent of the digital age,digital technology is bringing convenience to people while it is easy to copy and spread.The security of data assets and the illegal two spread of digital works not only seriously damage the rights and interests of the people of the data rights,but also have a great negative impact on the development of society and the progress of science and technology.There are many problems in digital works because of their wide variety and vague ownership.At present,there is no general way to protect them.As far as the current situation is concerned,the technical means of digital copyright protection are still relatively lack,the effect is not ideal,the issue of the ownership of the digital works and the safety of the whole life cycle are not fully considered.This paper analyzes the problems of digital copyright protection,compares the limitations of traditional methods,and describes the digital copyright protection method based on public key encryption and confirmation in detail,and verifies the effectiveness of the method through experiments.The main contents and results of this paper are as follows:(1)Detailed description and definition of the basic encryption model and the ownership distribution model.Through detailed introduction and description of the application scenario and implementation mode of the model,the control and protection of digital works from generation to storage to the whole process is realized.(2)Performance testing and qualitative analysis of the core models and algorithms.The parameters and schemes suitable for practical application are obtained through experimental results,and the feasibility of the method is verified by experiments and qualitative analysis.(3)The unified reading and coding problem of multiple types of digital works is solved.A unified coding method is proposed to solve the encryption and decryption operation of digital works in different media formats,so that the method is more universal.(4)Design an encryption key format and generation method.The combination of random code and space-time stamp can not only guarantee the uniqueness of the encryption key,but also embody its generation time and network address in the key,which gives more functions and meanings to the encryption key.(5)The core model of digital copyright protection is implemented based on browser side.The process of uploading,using and authorizing digital works in various file formats has been realized,and the corresponding results have been exported for each module.(6)The common abnormality of digital copyright protection is considered and controlled.The digital works are controlled by repeated uploads by others,security of digital works in transmission and storage.(7)Developed a universal extensible encryption and decryption plugin.It implements local key loading,automatic encryption,automatic decryption and other functions.It can be applied not only to digital copyright protection system,but also to the privacy protection of structured data.