Verifying validity of a certificate of a public key using both of a revocation list and querying a verification server

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United States of America Patent

PATENT NO 10361872
APP PUB NO 20170250825A1
SERIAL NO

15422229

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Abstract

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An image forming apparatus that performs an encrypted communication using a public key, and a method of controlling the same, determine the validity of a certificate in accordance with a certificate revocation list and/or the query to the certificate verification server. At a time of the determination of the validity of the certificate, it is selected whether to use any one of the certificate revocation list and the query to the certificate verification server, or both of the certificate revocation list and the query to the certificate verification server.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hokiyama, Takeshi Yokohama, JP 5 29

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