| 摘要 |
<p>A method and a system for distributing key of media stream are provided, including: when a calling terminal initiates calling, a security management server determines whether a domain to which the calling terminal belongs and a domain to which a called terminal belongs subscribe a key distribution protocol based on a calling request message; if the protocol has been subscribed, the security management server generates a key based on encryption capability information obtained in a calling process, and distributes the same generated key to the calling terminal and the called terminal; if the protocol has not been subscribed, the security management server generates a key based on encryption capability information obtained in a calling process, and distributes the generated key to terminals at the side in which the security management server itself is located. By applying the disclosure, the key is not generated by the calling terminal and the called terminal per se, but is generated by the security management server, so that complexity may be reduced for media stream key negotiation to facilitate promotion of media stream encryption service.</p> |
