Cryptography – Key management – Key distribution
Reexamination Certificate
2011-03-08
2011-03-08
Moore, Ian N (Department: 2491)
Cryptography
Key management
Key distribution
C380S277000, C380S278000, C380S279000, C380S283000, C713S153000, C713S171000, C370S328000, C370S329000, C370S338000, C370S349000, C455S410000, C455S411000
Reexamination Certificate
active
07903821
ABSTRACT:
A method for managing key in Multimedia Broadcast/Multicast service comprising steps of defining a valid MTK ID interval for each generated MSK and sends it to a UE along with a MSK by a BMSC; after receiving the MSK, saving a valid MTK ID interval of the MSK by the UE; and defining a MTK ID for each generated MTK encrypted with the MSK and sending the MTK ID and the MTK to the UE after encrypting them with the MSK by the BMSC This MSK is valid only when the transmission of the MTK within MTK ID interval is in operation. Therefore, once the UE finds out that some newly received MTK's MTK ID is beyond said MTK ID, it deletes the MSK that is applied in said MTK transmission's encryption correspondingly.
REFERENCES:
patent: 7055030 (2006-05-01), Negawa
patent: 7392382 (2008-06-01), Weis et al.
patent: 2003/0070092 (2003-04-01), Hawkes et al.
patent: 2004/0120527 (2004-06-01), Hawkes et al.
patent: 2005/0026607 (2005-02-01), Hwang et al.
patent: 2005/0220064 (2005-10-01), Hundscheidt et al.
patent: 2007/0223703 (2007-09-01), Verma et al.
patent: 1020050018232 (2005-02-01), None
patent: 1020050076433 (2005-07-01), None
“3GPP TS 33.246 V6.0.0—3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Security; Security of Multimedia Broadcast/Multicast Service (Release 6)”, Sep. 2004.
Xu, Wenyuan; Trappe, Wade; Paul, Sanjoy, “Key management for 3G MBMS security”, GLOBECOM'04, IEEE Global Telecomunications Conference, Nov. 29, 2004.
“MBMS MSK management”, Samsung Electronics, 3GPP TSG SA WG3 Security, Oct. 26, 2004.
Li Xiaoqiang
Wang Hong
Zhu Yanmin
Beijing Samsung Telecom R&D Center
Lagor Alexander
Moore Ian N
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
LandOfFree
Method for managing key in multimedia broadcast and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for managing key in multimedia broadcast and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for managing key in multimedia broadcast and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2742930