COMMUNICATIONS APPARATUS, COMMUNICATIONS SYSTEM, AND METHOD OF SETTING CERTIFICATE
First Claim
1. An apparatus in a system which includes at least a high-level apparatus and a plurality of low-level apparatuses, said apparatus being one of the low-level apparatuses, the apparatus comprising:
- a storage unit configured to store an individual certificate set and a common certificate set,wherein the common certificate set is the same common certificate set stored in advance on the other of the plurality of low-level apparatuses, said common certificate set being used for storing a new individual certificate set in the apparatus, andwherein the individual certificate set is configured to include own authentication information and an individual root-key certificate, the own authentication information including information uniquely identifying the apparatus, the individual root key certificate being the same for the other of the plurality of low-level apparatuses and is used to authenticate the validity of the high level apparatus; and
a communication unit configured to transmit the own authentication information to the high level apparatus to allow the high level apparatus to perform decryption to authenticate the validity of the apparatus.
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Abstract
An apparatus in a system which includes at least a high-level apparatus and a plurality of low-level apparatuses, said apparatus being one of the low-level apparatuses. The apparatus includes a storage unit configured to store an individual certificate set and a common certificate set and a communication unit configured to transmit own authentication information to the high level apparatus to allow the high level apparatus to perform decryption to authenticate the validity of the apparatus.
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Citations
9 Claims
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1. An apparatus in a system which includes at least a high-level apparatus and a plurality of low-level apparatuses, said apparatus being one of the low-level apparatuses, the apparatus comprising:
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a storage unit configured to store an individual certificate set and a common certificate set, wherein the common certificate set is the same common certificate set stored in advance on the other of the plurality of low-level apparatuses, said common certificate set being used for storing a new individual certificate set in the apparatus, and wherein the individual certificate set is configured to include own authentication information and an individual root-key certificate, the own authentication information including information uniquely identifying the apparatus, the individual root key certificate being the same for the other of the plurality of low-level apparatuses and is used to authenticate the validity of the high level apparatus; and a communication unit configured to transmit the own authentication information to the high level apparatus to allow the high level apparatus to perform decryption to authenticate the validity of the apparatus. - View Dependent Claims (2, 3)
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4. A system which includes at least a high-level apparatus and a plurality of low-level apparatuses, at least one of the low-level apparatuses comprising:
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a storage unit configured to store an individual certificate set and a common certificate set, wherein the common certificate set is the same common certificate set stored in advance on the other of the plurality of low-level apparatuses, said common certificate set being used for storing a new individual certificate set in the low-level apparatus, and wherein the individual certificate set is configured to include own authentication information and an individual root-key certificate, the own authentication information including information uniquely identifying the apparatus, the individual root key certificate being the same for the other of the plurality of low-level apparatuses and is used to authenticate the validity of the high level apparatus; and a communication unit configured to transmit the own authentication information to the high level apparatus to allow the high level apparatus to perform decryption to authenticate the validity of the low-level apparatus. - View Dependent Claims (5, 6)
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7. A method of communicating implemented on an apparatus in a system which includes at least a high-level apparatus and a plurality of low-level apparatuses, said apparatus being one of the low-level apparatuses, the method comprising:
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storing, at the apparatus, an individual certificate set and a common certificate set, wherein the common certificate set is the same common certificate set stored in advance on the other of the plurality of low-level apparatuses, said common certificate set being used for storing a new individual certificate set in the apparatus, and wherein the individual certificate set is configured to include own authentication information and an individual root-key certificate, the own authentication information including information uniquely identifying the apparatus, the individual root key certificate being the same for the other of the plurality of low-level apparatuses and is used to authenticate the validity of the high level apparatus; and transmitting, at the apparatus, the own authentication information to the high level apparatus to allow the high level apparatus to perform decryption to authenticate the validity of the apparatus. - View Dependent Claims (8, 9)
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Specification