Device authentication in a PKI
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United States of America Patent
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Jul 17, 2012
Grant Date -
Nov 26, 2009
app pub date -
Mar 3, 2009
filing date -
Apr 6, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for establishing a link key between correspondents in a public key cryptographic scheme, one of the correspondents being an authenticating device and the other being an authenticated device. The method also provides a means for mutual authentication of the devices. The authenticating device may be a personalized device, such as a mobile phone, and the authenticated device may be a headset. The method for establishing the link key includes the step of introducing the first correspondent and the second correspondent within a predetermined distance, establishing a key agreement and implementing challenge-response routine for authentication. Advantageously, main-in-the middle attacks are minimized.
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