Cryptography – Electric signal modification – Having mechanical control of signal encryption
Reexamination Certificate
2006-12-07
2010-12-07
Chai, Longbit (Department: 2431)
Cryptography
Electric signal modification
Having mechanical control of signal encryption
C380S028000, C380S029000, C380S030000, C713S168000, C713S169000, C713S170000, C713S171000, C726S027000, C726S028000, C726S029000, C726S030000
Reexamination Certificate
active
07848513
ABSTRACT:
A method for transmitting a handover security context of a first access point, when an access terminal from a service cell of a first access point is connected to a packet access router, to a service cell of a second access point connected to the packet access router, is provided. The handover security context transmitting method includes confirming whether a handover confirmation message transmitted from the access terminal has a security context therein; when the handover confirmation message has a security context therein, confirming whether the security context has security-related information therein; when the security context has security-related information therein, confirming whether the security context has a traffic-related key or a pairwise master key; and transmitting an information instruction message including the security related information confirmed in the security context, the security-related information, the traffic-related key, and the pairwise master key through the PAR to the second AP.
REFERENCES:
patent: 7236477 (2007-06-01), Emeott et al.
patent: 1020050041392 (2005-05-01), None
patent: WO 01/39538 (2001-05-01), None
Lee Sang-Ho
Yun Mi-Young
Chai Longbit
Electronics and Telecommunications Research Institute
Hanaro Telecom, Inc.
KT Corporation
Samsung Electronics Co,. Ltd.
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