Research And Implementation Of Network Information Encryption Technology Based On Speedway No Stop Toll Collection System

A lots of Sensitive information from Speedway No Stop Electronic Toll Collection System have to be transfered through net work,the security of sensitive encryption is very important progress to protect information security,and it is also the core technique to realize network information security.Cryptograph system divides into the public key cryptograph system and the symmetrical key cryptograph system.The key cryptograph system have the simple key to implement encryption and decryption fast.The public key cryptograph system have tow keys,one is the public key,the other is the private key,and its encryption process is different with its decryption process.The public key cryptograph system have lots of excellence,but its speed to encrypt and decrypt is very slow,and it can't suit for practical needs if we encrypt all message to transfer through network.Network sensitive information from Speedway No Stop Electronic Toll Collection System is encrypted and implement as fallows:First,AES conversational secret key is produced by chaos iterative equation.Second,sensitive information is encrypted by AES algorithm.Third,AES conversational secret key is encrypted by RSA algorithm,and the result is written into anterior ciphertext.Fourth,all ciphertext is compressed by compressing module for saving transfer time through network and enhancing the system security.Last,final result is transfered through network..