Software copyright protection based on dynamic ciphertext
Wang Yun-xia · Information technology newsletter · 2014
A method about how to protect software is designed in this paper,which is based on dynamic ciphertext. In this method,the software uses the fingerprint information of user computer and additional information of software as the feature information of the user computer. The feature information was generated MD5 code using the MD5 algorithm,and then generated ciphertext by using DES. When the software runs,first it decrypts the ciphertext stored in the user computer and read the information from which,and then compares the fingerprint information read from user computer and the characteristic information read form the ciphertext to validate the software copyright and achieves the purpose of protection of software copyright.