Design And Implementation Of Combined Encryption Algorithm Based On AES And Rsa In DOA

With the continuous development of science and technology,the data is showing an explosive growth.Large data technology is also developing rapidly.It is becoming more and more widely used in business.But influenced by the structure of software and the traditional data structure,the information between the application systems is difficult to share,and the problem of information island is common.Information security has also become an unavoidable problem in the era of big data and cloud computing.In order to alleviate the pressure of information sharing and data security,there are more and more ways to deal with large data and protect data security,but these methods can not solve the problems of data difficult management,difficult control,data embezzlement,abuse and so on.For example,the big data exchange will generate a lot of data leakage and data security problems when data transaction.And for data security,most of the current technologies are protected by firewalls,link security,password and other measures to protect the data.When these methods are broken,the data will be exposed,so that the interests of the data owners can not be guaranteed.DOA(Data Oriented Architecture)proposes the concept of data ownership.Using data ownership,it can not only define the concept of data ownership,but also facilitate data circulation and transaction,and solve the problem of information island between different departments and governments.Secret technology really solves the problem of data security on the data itself.Even if the traditional protection measures are broken,the stolen data can not be opened without a key.In this paper,a representative AES symmetric encryption algorithm and RSA asymmetric encryption algorithm are selected from symmetric cryptosystem and asymmetric cryptosystem,and the two algorithms are studied in depth.The advantages and disadvantages of the two algorithms are analyzed,and the advantages of AES encryption speed and RSA have the power characteristics,and a new AES algorithm is proposed.The hybrid encryption algorithm of RSA and DOA is applied to the hybrid encryption algorithm.The DOA based data ownership solution is proposed,which explains several roles in the data ownership and the relationship between them,and illustrates the field of data ownership that can be applied.According to the idea of DOA "natural encryption,authorization to use",this paper expounds the principle of data ownership and authorization,and describes the data registration center and data rights center supporting both of them,as well as the code tools to complete the authorization operation,and carries out a visual display.Based on the idea of data ownership in DOA,this paper designs a data security system based on ownership based on AES and RSA combined encryption algorithm.The contents of this paper are as follows:(1)to study the logical relation of ownership in DOA;Based on the idea of data oriented and data based on DOA,the logical relationship between users as data owners,data users,data producers,data agents,and their relationship changes in different situations are studied.(2)study the performance of AES algorithm and RSA algorithm to verify the feasibility of the technology implementation plan.Based on the technical guidance scheme,the advantages and disadvantages of AES algorithm and RSA algorithm in performance are studied.The specific implementation steps of the power operation are clearly defined,and the ideas for the implementation of AES and RSA combined encryption algorithms are provided.The main innovation and research results of this paper are as follows:(1)guided by the idea of DOA data ownership and combining the advantages and disadvantages of AES algorithm and RSA algorithm,the realization scheme of ownership based on technology is determined.The AES symmetric encryption algorithm has the advantages of high encryption efficiency and RSA asymmetric encryption algorithm.It studies the value of data ownership in data circulation and transaction from two aspects of data confirmation and data authorization,and determines the technical implementation scheme guided by thought.(2)realize the design of AES and RSA combined encryption algorithm in DOA;The realization of the technology ownership scheme,initially completed the key generation,data registration,authorization and other basic functions and codes to achieve visual view.