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Communication apparatus, control method, and storage medium

  • US 9,843,444 B2
  • Filed: 04/09/2013
  • Issued: 12/12/2017
  • Est. Priority Date: 05/01/2012
  • Status: Active Grant
First Claim
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1. A communication apparatus, comprising:

  • a CPU coupled to a memory, wherein the CPU controls the communication apparatus to;

    perform a first process for sharing a first encryption key between the communication apparatus and a second communication apparatus, with the first process initiated by the second communication apparatus;

    perform a second process for transmitting a second encryption key without activating the first encryption key to the second communication apparatus, with the second process initiated by the communication apparatus, in a case where the first encryption key is shared;

    perform a third process for transmitting the second encryption key encrypted by activating the first encryption key to the second communication apparatus, with the third process initiated by the communication apparatus, in a case where an error occurs in the second process, and not perform the third process in a case where the second process succeeds; and

    activate the second encryption key for communication between the communication apparatus and the second communication apparatus after sharing of the second encryption key.

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