A New Principle And Implement Method On Software Encryption

This paper mainly studied some issues as followed:一,We put forward some new ideas about software protect: Relate theusers information related with the software that they used .If we found pirated software, we can found the software's owner. It make laws have goals to trounce.二,When texting-programme found pirated software ,as traditional, programme would finished .This will made the pirate man and pirated software users found they don't pirate successfully . In our programme, when this conditions happen ,we will run continue ,but run wrong algorithms . That will waste much time and money of the pirate maker and users. Help laws prevent pirate.三,The encrpytion and decrpytion techniques developed through Dos phases to WINDOWS phases. In Dos, many encrpytion techniques were very perfect. With the develop of the operating system, we met many new problems, the higher editon of the WINDOWS, the weaker of the bottom controllers .We study some good encrpytion techniques realization, under the Windows 9x and Windows NT operating system.四,We adopt encryption and decryption technology based on Permutation Code. Analyse its characters encrypting intensity and ability of resist attacking. Compare DBS AES with Permutation Code, we found use encryption and decryption technology based on Permutation Code , can ensure the encrypted software can't be pirated.