Patent ID: 8582766
Filing Date: 2013-11-12
Classification: G06Q,H04L,H04W

Abstract:
1. A method for ensuring media stream security in an IP Multimedia Subsystem (IMS) network, comprising: assigning, by a first network device serving of a first User Equipment (UE), an end-to-end media stream security key for the first UE, and transmitting the end-to-end media stream security key to a second network device serving a second UE; encrypting, by a third network device, the end-to-end media stream security key using a first session key shared with the first UE, and transmitting, by the third network device, the encrypted end-to-end media stream security key to the first UE via a first session message; encrypting, by a fourth network device, the end-to-end media stream security key using a second session key shared with the second UE, and transmitting, by the fourth network device, the encrypted end-to-end media stream security key to the second UE via a second session message; and encrypting or decrypting a media stream, by at least one of the first UE or the second UE, using the end-to-end media stream security key; wherein the end-to-end media stream security key is transmitted from the first network device to the third network device; and the end-to-end media stream security key is transmitted from the second network device to the fourth network device.