Public key certification issuing apparatus
First Claim
Patent Images
1. An anonymous public key generating apparatus comprising:
- communication means for communicating with a communication apparatus through a network;
generation means for generating an anonymous public key based on public information related to a secret key of the communication apparatus; and
transmission means which transmits a signal including a global address prefix to be used by the communication apparatus and transmits, in response to a first request for a public key certificate from the communication apparatus, a second request including the anonymous public key generated by said generation means and the global address prefix of the communication apparatus to a public key certificate issuer for requesting a public key certificate of the generated anonymous public key,wherein the anonymous public key is generated so that the communication apparatus may use the anonymous public key with the secret key of the communication apparatus.
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Abstract
A host requests a public key certificate from a gateway, and the gateway requests a public key certificate from a Certification Authority (CA). The CA generates a public key certificate, which is sent to the host through the gateway. The host sets an IPv6 address based on information from the gateway. The host requests and receives a new public key certificate whenever necessary, and sends a public key certificate including the IPv6 address to the communication counterpart.
31 Citations
21 Claims
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1. An anonymous public key generating apparatus comprising:
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communication means for communicating with a communication apparatus through a network; generation means for generating an anonymous public key based on public information related to a secret key of the communication apparatus; and transmission means which transmits a signal including a global address prefix to be used by the communication apparatus and transmits, in response to a first request for a public key certificate from the communication apparatus, a second request including the anonymous public key generated by said generation means and the global address prefix of the communication apparatus to a public key certificate issuer for requesting a public key certificate of the generated anonymous public key, wherein the anonymous public key is generated so that the communication apparatus may use the anonymous public key with the secret key of the communication apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer-readable medium embodying an anonymous public key generating program, the program comprising steps of:
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transmitting a signal including a global address prefix to be used by the communication apparatus; generating an anonymous public key based on public information related to a secret key of the communication apparatus; receiving a first request for a public key certificate from a communication apparatus through a network; and transmitting, in response to the first request, a second request including the generated anonymous public key and the global address prefix of the communication apparatus to a public key certificate issuer for requesting a public key certificate of the generated anonymous public key, wherein the anonymous public key is generated so that the communication apparatus may use the anonymous public key with a the secret key of the communication apparatus. - View Dependent Claims (8, 9, 10, 11)
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12. A public key certificate issuing method comprising steps that:
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an anonymous public key generating apparatus transmits a signal including a global address prefix to be used by a communication apparatus, generates an anonymous public key based on public information related to a secret key of the communication apparatus, receives a first request for a public key certificate from the communication apparatus through a network, and transmits, in response to the first request, a second request including the generated anonymous public key and the global address prefix of the communication apparatus to a public key certificate issuer for requesting the public key certificate for the anonymous public key; and said public key certificate issuer issues the public key certificate for the anonymous public key received from the anonymous public key generating apparatus, wherein the anonymous public key is generated so that the communication apparatus may use the anonymous public key with the secret key of the communication apparatus. - View Dependent Claims (13, 14, 15, 16)
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17. An anonymous public key generating method comprising:
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transmitting a signal including a global address prefix to be used by a communication apparatus; generating an anonymous public key based on public information related to a secret key of the communication apparatus; receiving a first request for a public key certificate from the communication apparatus through a network; and transmitting, in response to the first request, a second request including the generated anonymous public key and the global address prefix of the communication apparatus to a public key certificate issuer for requesting a public key certificate of the generated anonymous public key, wherein the anonymous public key is generated so that the communication apparatus may use the anonymous public key with a the secret key of the communication apparatus. - View Dependent Claims (18, 19, 20, 21)
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Specification