| 摘要 |
<p>A content protection system for securely delivering audio/video data from a content server to a content client through an unsecured channel is disclosed. For each session, the content protection system comprises two phases. The first phase is client-server mutual authentication and session key establishment. In this phase, the content server and the content client verify each other's legitimacy, and at the same time exchange information so that both server and client can calculate or derive the same session key. In the second phase, audio/video data is encrypted with the session key in the content server, and then decrypted with the session key in the content client. If a version of server or client is found to be compromised, its ID will be put into a blacklist.</p> |
