Simplified secure symmetrical key management
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United States of America Patent
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Nov 19, 2013
Grant Date -
Oct 7, 2010
app pub date -
Apr 6, 2009
filing date -
Apr 6, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Nodes of a network are each provided with a seed value and a seed identifier. Each seed value has a corresponding unique seed identifier which is maintained within the system. Within each authorized node, the seed value is combined with a local node identifier, such as a serial number or other unique identifier, to form a cryptographic key that is then used by the node to encrypt and/or decrypt data transmitted and received by that node. The cryptographic key is never transmitted over the network, and each node is able to create a different cryptographic key for use in communicating with other nodes.
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