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Method for secure communication in a network, a communication device, a network and a computer program therefor

  • US 9,077,520 B2
  • Filed: 03/16/2010
  • Issued: 07/07/2015
  • Est. Priority Date: 03/19/2009
  • Status: Active Grant
First Claim
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1. A method for securing communications between a first node and a second node in a network comprising a management device provided with root keying materials, the method comprising:

  • the management device generating, based on the root keying materials, a first node keying material shares comprising a number of sub-elements and the first node keying material shares being arranged for generating a first complete key,the management device selecting a subset of sub-elements of the first keying material shares, the number of sub-elements selected being less than the total number of sub-elements of the first keying material shares, and the selected sub-elements forming a first node symmetric-key generation engine,the management device distributing the first node symmetric-key generation engine to the first node, andthe first node generating, based on the first node symmetric-key generation engine and on an identifier of the second node, a first key used for securing communications with the second node.

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