The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Mar. 22, 2010
Tian Tian, Shenzhen, CN;
Yunwen Zhu, Shenzhen, CN;
Yinxing Wei, Shenzhen, CN;
Zhimeng Teng, Shenzhen, CN;
Tian Tian, Shenzhen, CN;
Yunwen Zhu, Shenzhen, CN;
Yinxing Wei, Shenzhen, CN;
Zhimeng Teng, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong Province, CN;
Abstract
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.