Tamper resistant software protection method with renewable security mechanism

摘要

A custodian applet is embedded in the digital content and suitable encryption processes are employed prior to sending the content over a distribution channel. At plural locations along the distribution channel, testing stations examine the content and utilize the embedded applet to determine if the integrity. of the digital content has been tampered with. If tampering is detected, the testing station alerts the content provider that tampering has occurred, whereupon the content provider changes the security mechanism to prevent further breach.