发明名称 |
METHOD AND SYSTEM FOR DELAYING TRANSMISSION OF MEDIA INFORMATION IN INTERNET PROTOCOL ( IP) MULTIMEDIA SUBSYSTEM |
摘要 |
A method for transmitting deferred media information in an Internet Protocol (IP) multimedia subsystem (IMS) includes: a sending party of the media information sends a key generation parameter encrypted with a Ka to a mailbox application server of a receiving party of the media information, the mailbox application server stores or saves the encrypted key generation parameters, and sends the encrypted key generation parameters to a key management server (KMS); the KMS generates a media key K and forwards it to the sending party through the mailbox application server of the receiving party; the receiving party obtains the encrypted key generation parameter from the mailbox application server and sends it to the KMS; the KMS generates the K and sends it to the receiving party; the receiving party decrypts the encrypted media information by using the K. A corresponding system is also disclosed. The method and system decrease signaling interaction between the sending party and the KMS, reduce the storage pressure of the KMS; realize the end-to-end secure transmission of the deferred media in the IMS.
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申请公布号 |
US2012099729(A1) |
申请公布日期 |
2012.04.26 |
申请号 |
US201013259732 |
申请日期 |
2010.03.22 |
申请人 |
TIAN TIAN;ZHU YUNWEN;WEI YINXING;TENG ZHIMENG |
发明人 |
TIAN TIAN;ZHU YUNWEN;WEI YINXING;TENG ZHIMENG |
分类号 |
H04L9/08 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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