Research And Application For The Software Encrypt System Based On The Combination Algorithm With AES And RSA

With the rapid development of computer science, various kinds of technology and ideas appear, and the software is increasing in size and technology. Excellent software becomes the focus of steal edition. Therefore, to protect software and research data the encryption technology are very important in software development.At present, cryptosystem used in software encryption and decryption technology is divided into symmetric cryptosystem and asymmetric cryptosystem. AES cryptosystem belongs to symmetric cryptosystem, it is the Advanced Encryption Standard in the 21st century. This algorithm is brief, efficient and safe. It has been widely used. RSA cryptosystem is the famous representative of the present asymmetric cryptosystem. Due to the functions of data encryption, identity recognition and digital signature, more and more scholars and research institutes are paying attention to it.Based on the exploration of the references concerning software encryption and decryption, this paper puts forward an AES and RSA combined data encryption system by analyzing the current data encryption technology. By making use of the rapid speed of AES in data encryption and the high security of RSA, this system effectively solves the problem of incompatibility of speed and security, thus improves the encryption speed and intensity.1. This thesis analyzes briefly the widely used software encryption /decryption technology so as to make this system meet the needs of the users. It is advanced and practical. 2. This thesis analyzes the model of data encryption and discusses the current representative ideas and methods of encryption system.3. The mathematical principles, realization and optimum of AES and RSA are also detailed in this thesis.4. Regarding to the advantages and disadvantages of the current data encryption and decryption methods and relating to the specific projects which require both intense and quick encryption, this paper puts forward a encryption and decryption design based on the combination of AES and RSA.5. Based on the above design, the idea, flow chart and procedure of the design are given.This research and practice are valuable for reference and application. The system of encryption and decryption has a bright prospect in some encryption and decryption applications which require both high speed and security.