Design and Implementation of the Password Encryption Tool

When using symmetric encryption algorithms,key management is the main issue to security system.Existing ways to save the key almost need to through physical media,bringing users the inconvenience.In order to solve the problem,this paper proposed a pass-word-based encryption scheme;it can be a good solution to the key protection issues.Finally,coding the program to implement a pass-word-based encryption tool on the.Net platform;On this basis,to achieve and create a self-extracting executable encrypted file,so that password-based encryption and decryption can conduct independently.