Determining a session encryption key during a...

Details Determining a session encryption key during a... Determining a session encryption key during a...

2004-09-21

2010-02-02

Nalven, Andrew L (Department: 2434)

Cryptography

Key management

Key distribution

Reexamination Certificate

active

07657036

ABSTRACT:
Techniques are provided for determining an updated session encryption key. According to one embodiment, a packet index can be computed using a sequence number received in a session data packet during a SRTP session and a predetermined value. The predetermined value can be, for example, a non-zero value from a roll-over-counter that has been set to the non-zero value. The updated session encryption key can then be determined using a master key received from a BCMCS controller and the packet index. The determined updated session key is used to encrypt or de-encrypt content provided by a content server.

REFERENCES:
patent: 7234063 (2007-06-01), Baugher et al.
patent: 2005/0175175 (2005-08-01), Leech
Baugher D Mcgrew Cisco Systems et al., “The Secure Real-Time Transport Protocol (SRTP)”, IETF Standard, Internet Engineering Task Force, IETF, CH, Mar. 2004 XP 015009491.
International Search Report—PCT/US2005/033735. International Search Authority—European Patent Office—Mar. 13, 2006.
Written Opinion—PCT/US2005/033735. International Search Authority—European Patent Office—Mar. 13, 2006.
International Preliminary Report on Patentability—PCT/US2005/033735, International Search Authority—The International Bureau of WIPO—Geneva, Switzerland—Mar. 27, 2007.
3GPP2 X.S0022 Version 1.0 3RD Generation Partnership Project 2 “3GPP2”, “Broadcast and Multicast Service in cdma2000 Wireless IP network” Dec. 2004.

Affiliated with

Also associated with

Rating

Determining a session encryption key during a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Determining a session encryption key during a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining a session encryption key during a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4200449