| 摘要 |
THE PRESENT INVENTION RELATES TO A SYSTEM AND METHOD FOR PROTECTING A LICENSED SOFTWARE APPLICATION (31) FROM PIRACY WITHIN A COMPUTER SYSTEM BY USING A SMART CARD (32) AND A LICENSE CODE. THE SYSTEM FOR PROTECTING A LICENSED SOFTWARE APPLICATION (31) COMPRISES A SMART CARD (32), A LICENSED SOFTWARE (31), A REGISTRATION SOFTWARE (11) RUNNING ON A REGISTRATION SERVER (10) AND A LICENSE CODE GENERATOR (21). MEANWHILE, THE METHOD COMPRISES THE STEPS OF DETERMINING THE PRESENCE OF A LICENSE CODE, DECRYPTING THE LICENSE CODE USING USER'S PRIVATE KEY FROM THE SMART CARD (32), VERIFYING A DIGITAL SIGNATURE IN THE LICENSE CODE, AND CHECKING THE EXPIRY DATE OF THE SOFTWARE (31) FOR EXECUTION OF THE SOFTWARE APPLICATION. IF THE LICENSE CODE IS NOT AVAILABLE, THE METHOD FURTHER REQUIRES THE USER TO USE CERTIFICATE-BASED-LOGIN TO A WEBSITE AND REGISTER USING THE SMART CARD (32) THAT IS PROVIDED BY THE SOFTWARE VENDOR. SUBSEQUENTLY, USER'S INFORMATION AND CERTIFICATE IS SENT THROUGH A SECURE CHANNEL TO THE VENDOR'S SERVER AND SERVER SIDE APPLICATION DIGITALLY SIGNS THE PROGRAM LICENSE EXPIRY DATE AND ENCRYPT WITH RECIPIENT PUBLIC KEY. THEN, THE LICENSE CODE IS SENT BACK TO THE USER AND THE DECRYPTION AND VERIFICATION PROCESS OF THE DIGITAL SIGNATURE REPEATS.
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