Research On The Security Technology Of Network-Information Transmission Based On RSA And AES Encryption System

Computer communication networks have brought profound revolution to the wayof life in the human society, especially the Internet s widespread popularization. Withthe rapid development of electronic commerce, the requirements of information andinformation technology increased, and information security is becoming more and moreimportant. The cryptorgraphy becomes an important means of information security innetwork applications for the safeguard of electronic commerce.Advanced data encryption standard AES is a kind of typical symmetriccryptosystem. Its encryption and decryption algorithm has been widely used because ofits higher benefits but safety. RSA public cryptosystem is the typical asymmetriccryptosystem. This cryptosystem has advantages that not need secret channels fortransmitting secret communication and high security. Therefore, the RSA publiccryptosystem has received much attention because it can be used for data encryptionand digital signature.Based on the analysis of the existing data encryption technology，the paper gives ainformation encrypted transmission solution based on RSA public cryptosystem andAES advanced data encryption standard.The main tasks of this thesis are summarized as follows:1. The encryption and decryption algorithm principles of the advanced dataencryption standard AES are summarized briefly. The safety, advantages anddisadvantages of Rijndeal encryption system, chosen in advanced data encryptionstandard AES cryptosystem, are analyzed systemically.2. The basic principle of encryption algorithm and decryption algorithm of RSApublic cryptosystem is illuminated. Detailed analyses are made on the parameterselection principle, its safety and its advantages and disadvantages of RSAcryptosystem.3. By making full use of AES symmetric cryptosystem encryption speed, and thehigh security advantages of RSA public cryptosystem, the scheme is given based onRSA public cryptosystem and AES advance data encryption standard. The proposedscheme shows that this encryption scheme can improve the shortcoming of the slowencryption speed of RSA encryption cryptosystem and solved the key managementdifficult problems of AES symmetric cryptosystem. The proposed scheme will be moresuitable for the data encryption of network transmission.