US Patent 9137658 Electronic key registration system
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Patent abstract
An offline immobilizer ECU reads an encryption key generation code from an offline additional electronic key and generates an electronic key encryption key for the offline additional electronic key using the encryption key generation code and a communication subject key encryption key held by the immobilizer ECU. The immobilizer ECU stores, in a memory, the generated electronic key encryption key and a key ID code that is read from the offline additional electronic key.
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US Patent 09137658 Electronic key registration system US Patent 9137658 Electronic key registration system
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Patent Number
09137658
Patent Number
9137658
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US Patent 09137658 Electronic key registration system
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Is a
Patent jurisdiction
Patent number
09137658
Date of patent
September 15, 2015
Patent application number
13903342
Date Filed
May 28, 2013
Patent primary examiner
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