Cryptography – Key management – Key distribution
Reexamination Certificate
2011-04-26
2011-04-26
Patel, Ashok B (Department: 2491)
Cryptography
Key management
Key distribution
C380S259000, C380S260000, C380S277000, C713S168000, C713S171000
Reexamination Certificate
active
07933413
ABSTRACT:
Key exchanges between peer-to-peer devices can be vulnerable to man in the middle attacks. Verification of the key exchanges can be made on a channel, network and/or device different from the channel, network and/or device used for the key exchange to determine whether the key exchange was secure. Verification of the key exchange can also be made through an established and trusted device and/or entity. If the key exchange was secure, the parties to a communication utilizing the key(s) exchanged can be notified, if desired. If the key exchange was not secure, the parties can be notified and the communication can be selectively disconnected.
REFERENCES:
patent: 5675648 (1997-10-01), Townsend
patent: 5696880 (1997-12-01), Gustafson et al.
patent: 6865681 (2005-03-01), Nuutinen
patent: 6907034 (2005-06-01), Begis
patent: 7039946 (2006-05-01), Binding
patent: 7131004 (2006-10-01), Lyle
patent: 2002/0025042 (2002-02-01), Saito
patent: 2002/0059516 (2002-05-01), Turtiainen
patent: 2003/0081774 (2003-05-01), Lin
patent: 2003/0123434 (2003-07-01), Hirayama
patent: 2003/0172280 (2003-09-01), Edward
patent: 2005/0044365 (2005-02-01), Haukka
patent: 2005/0182937 (2005-08-01), Bedi
patent: 2005/0185644 (2005-08-01), Tsuji
patent: 2006/0005033 (2006-01-01), Wood
patent: 2006/0190730 (2006-08-01), Iwamura
patent: 2006/0206705 (2006-09-01), Khosravi
patent: 2007/0112962 (2007-05-01), Lewontin
patent: 2007/0233860 (2007-10-01), Lillie et al.
patent: 11-149414 (1999-06-01), None
patent: 14-217896 (2002-08-01), None
patent: WO2005002131 (2005-01-01), None
Educated Guesswork. Detecting MITM attacks on VoIP systems. May 5, 2006. http://www.educatedguesswork.org/ movabletype/archives/2006/05/detecting—mitm.html. Last accessed Dec. 7, 2006.
Borderware. Securing and Federating VoIP Using Encryption—A Discussion of ZRTP Implementation Models. http:// www.borderware.com/pdfsWP—Zfone—0906.pdf. Last accessed Dec. 7, 2006.
Simon Horne. Technical Paper—eaRTP—Encryption and Authentication with Real Time Protocol—An End-to-End Security framework within deployed H.323 networks. Packetizer Labs. Nov. 28, 2005. http//www.packertizer.com/labs/eaRTP.pdf. Last accessed Dec. 7, 2006.
International Search Report and Written Opinion dated Jun. 30, 2008 for PCT Application Serial No. PCT/US2008/052698, 10 pages.
Burkhardt Ryan M.
Cohen Jason L.
Hartrell Gregory D.
Steeves David J.
Lagor Alexander
Microsoft Corporation
Patel Ashok B
Turocy & Watson LLP
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