Method and system for secure processing of authentication key material in an ad hoc wireless network
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United States of America Patent
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Jun 8, 2010
Grant Date -
Mar 13, 2008
app pub date -
Sep 7, 2006
filing date -
Sep 7, 2006
priority date (Note) -
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Abstract
A method and system for secure processing of authentication key material in an ad hoc wireless network enables secure distribution of the authentication key material between a mesh authenticator (110) and a mesh key distributor (115), which may be separated by multiple wireless links. The method includes deriving a pairwise transient key for key distribution (PTK-KD) using a mesh key holder security information element (MKHSIE). A mesh authenticator pairwise master key (PMK-MA) is then requested using a first mesh encrypted key information element (MEKIE) that includes data origin information. Using the pairwise transient key for key distribution (PTK-KD), a second mesh encrypted key information element (MEKIE) is then decrypted to obtain the mesh authenticator pairwise master key (PMK-MA).
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