CERTIFICATE MANAGEMENT APPARATUS AND CERTIFICATE MANAGEMENT METHOD
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Abstract
The present invention provides a certificate management apparatus which retains an important certificate, while deleting the oldest referenced certificate.
An update determination information output unit outputs update determination information being information for determining whether or not to update a certificate. A certificate cache stores the certificate on a volatile memory. An operation unit stores the update determination information output by the update determination information output unit in the certificate cache by relating to the certificate, and based on the update determination information stored in the certificate cache, updates the certificate related to the update determination information.
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Citations
32 Claims
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1-17. -17. (canceled)
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18. A certificate management apparatus comprising:
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an update determination information output unit to output a counter value which is incremented with every reference to a certificate; a certificate cache being a cache memory to store the certificate on a volatile memory; and an operation unit to store the counter value output by the update determination information output unit by relating to the certificate in the certificate cache, and based on the counter value stored in the certificate cache, to update the certificate related to the counter value. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A certificate management apparatus comprising:
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an update determination information output unit to output a current position; a certificate cache being a cache memory to store a certificate on a volatile memory; and an operation unit to store the current position output by the update determination information output unit by relating to the certificate in the certificate cache, and based on the current position stored in the certificate cache, to update the certificate related to the current position. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A certificate management method of a certificate management apparatus managing a certificate, the method comprising:
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an update determination information outputting step, by an update determination information output unit, outputting a counter value which is incremented at every reference to a certificate; a certificate cache storing step, by a certificate cache, storing the certificate in a cache memory on a volatile memory; and an updating step, by an operation unit, storing the counter value output by the update determination information outputting step by relating to the certificate in the certificate cache, and based on the counter value stored in the certificate cache, updating the certificate related to the counter value.
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32. A certificate management method of a certificate management apparatus managing a certificate, the method comprising:
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an update determination information outputting step, by an update determination information output unit, outputting a current position; a certificate cache storing step, by a certificate cache, storing the certificate in a cache memory on a volatile memory; and an updating step, by an operation unit, storing the current position output by the update determination information outputting step by relating to the certificate in the certificate cache, and based on the current position stored in the certificate cache, updating the certificate related to the current position.
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Specification