AUTHENTICATOR APPARATUS
First Claim
1. An authenticator apparatus which authenticates an authenticatee apparatus, said authenticator apparatus comprising:
- a storing unit which previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic;
an authenticating information transmitting unit configured to transmit authenticating information to the authenticatee apparatus;
a response information receiving unit configured to receive response information outputted from the authenticatee apparatus in response to an input of the authenticating information;
an environment identifying unit configured to identify an environment of the authenticatee apparatus; and
a judging unit configured to determine whether or not the authenticating information and the response information satisfy the input and output characteristic indicated in the characteristic information stored in said storing unit, and to judge that the authenticatee apparatus is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified by said environment identifying unit.
1 Assignment
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Accused Products
Abstract
An authenticator apparatus which makes it difficult for an unauthorized user to masquerade and enhances safety includes an authenticating information holding unit (102) previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic, an authenticating information transmitting unit (107) which transmits authenticating information to a portable medium (2), a response information receiving unit (108) which receives response information outputted from the portable medium (2) in response to an input of the authenticating information, an environment selecting unit (105) which identifies an environment of the portable medium (2), and a response information confirming unit (109) which determines whether or not the authenticating information and the response information satisfy the input and output characteristic indicated in the characteristic information stored in the authenticating information holding unit (102), and judges that the portable medium (2) is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified by said environment identifying unit.
42 Citations
22 Claims
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1. An authenticator apparatus which authenticates an authenticatee apparatus, said authenticator apparatus comprising:
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a storing unit which previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic; an authenticating information transmitting unit configured to transmit authenticating information to the authenticatee apparatus; a response information receiving unit configured to receive response information outputted from the authenticatee apparatus in response to an input of the authenticating information; an environment identifying unit configured to identify an environment of the authenticatee apparatus; and a judging unit configured to determine whether or not the authenticating information and the response information satisfy the input and output characteristic indicated in the characteristic information stored in said storing unit, and to judge that the authenticatee apparatus is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified by said environment identifying unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An authenticatee apparatus which an authenticator apparatus authenticates, said authenticatee apparatus comprising:
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an authenticating information receiving unit configured to receive authenticating information from the authenticator apparatus; a response information outputting unit configured to obtain the authenticating information and output response information which corresponds to the authenticating information and possibly changes according to an environment; a response information transmitting unit configured to transmit the response information to the authenticator apparatus, the response information being outputted from said response information outputting unit; and a notifying unit configured to notify the authenticator apparatus of the environment of said response information outputting unit. - View Dependent Claims (16, 17)
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18. An authenticating method for authenticating an authenticatee apparatus,
wherein said authenticating method utilizes a storing unit which previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic, and includes: -
transmitting authenticating information to the authenticatee apparatus; receiving response information outputted from the authenticatee apparatus in response to an input of the authenticating information; identifying an environment of the authenticatee apparatus; and determining whether or not the authenticating information and the response information satisfy the input and output characteristic indicated by the characteristic information stored in the storing unit, and judging that the authenticatee apparatus is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified in said identifying.
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19. A processing method performed by an authenticatee apparatus authenticated by an authenticator apparatus, said processing method comprising:
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receiving authenticating information from the authenticator apparatus; obtaining the authenticating information and outputting response information which corresponds to the authenticating information and possibly changes according to an environment; transmitting the response information to the authenticator apparatus, the response information being outputted in said obtaining and outputting; and notifying the authenticator apparatus of the environment of the authenticatee apparatus.
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20. A computer program for authenticating an authenticatee apparatus,
wherein said computer program uses a storing unit which previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic, and causes a computer to execute: -
transmitting authenticating information to the authenticatee apparatus; receiving response information outputted from the authenticatee apparatus in response to an input of the authenticating information; identifying an environment of the authenticatee apparatus; and determining whether or not the authenticating information and the response information satisfy the input and output characteristic indicated by the characteristic information stored in the storing unit, and judging that the authenticatee apparatus is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified in said identifying.
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21. An integrated circuit which authenticates an authenticatee apparatus, said integrated circuit comprising:
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a storing unit which previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic; an authenticating information transmitting unit configured to transmit authenticating information to the authenticatee apparatus; a response information receiving unit configured to receive response information outputted, in response to an input of the authenticating information, from the authenticatee apparatus; an environment identifying unit configured to identify an environment of the authenticatee apparatus; and a judging unit configured to determine whether or not the authenticating information and the response information satisfy the input and output characteristic indicated by the characteristics information stored in said storing unit, and to judge that the authenticatee apparatus is authentic in the case where the input and output characteristic is satisfied, the authenticating information and the response information being in the environment identified by said environment identifying unit.
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22. An integrated circuit which an authenticator apparatus authenticates, said integrated circuit comprising:
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an authenticating information receiving unit configured to receive authenticating information from the authenticator apparatus; a response information outputting unit configured to obtain the authenticating information and output response information which corresponds to the authenticating information and possibly changes according to an environment; a response information transmitting unit configured to transmit the response information to the authenticator apparatus, the response information being outputted from the response information outputting unit; and a notifying unit configured to notify the authenticator apparatus of the environment of the response information outputting unit.
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Specification