| 摘要 |
<p>Provided are a system and method, applied in the mobile multimedia broadcasting system, for encrypting a service key with a user key when the user terminal is roaming. The method includes: a mobile multimedia broadcasting service platform in the terminal visiting location requests a mobile multimedia broadcasting service platform in the terminal home location to encrypt a service key; after detecting the service key according to the service key encryption request, the mobile multimedia broadcasting service platform in the terminal home location encrypts the service key with the corresponding user key; the mobile multimedia broadcasting service platform in the terminal home location sends the encrypted service key to the mobile multimedia broadcasting service platform in the terminal visiting location. The above method avoids the risk of information disclosure brought by sending a user key to mobile multimedia broadcasting service platforms outside the home location.</p> |
