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The smart power grid promises to improve efficiency and reliability of powerdelivery. This report introduces the logical components, associatedtechnologies, security protocols, and network designs of the system.Undermining the potential benefits are security threats, and those threatsrelated to cyber security are described in this report. Concentrating on thedesign of the smart meter and its communication links, this report describesthe ZigBee technology and implementation, and the communication between thesmart meter and the collector node, with emphasis on security attributes. Itwas observed that many of the secure features are based on keys that must bemaintained; therefore, secure key management techniques become the basis tosecuring the entire grid. The descriptions of current key management techniquesare delineated, highlighting their weaknesses. Finally some initial researchdirections are outlined.

Cryptographic Key Management for Smart Power Grids - Approaches and Issues