Information processing device and method, information processing system, recording medium, and program
First Claim
1. An information processing apparatus for acquiring predetermined information, the information processing apparatus characterized in that it comprises:
- storage means for storing an electronic ticket indicating the right to acquire said predetermined information;
transmission means for transmitting a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID to another information processing apparatus;
reception means for receiving an encryption key for acquiring said predetermined information transmitted from said other information processing apparatus based on said ticket ID and said electronic signature; and
acquisition means for acquiring said predetermined information using the encryption key received by said reception means.
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Accused Products
Abstract
The present invention relates to an information processing apparatus and method, an information processing system, a recording medium and a program in which it is made possible to acquire information without being restricted by device if the right to acquire information circulated via a network is owned. A user terminal 12 sends an electronic ticket that has its own electronic signature to an electronic ticket management server 11, and requests information for accessing a content distribution server 14 that distributes the content corresponding to that electronic ticket. The electronic ticket management server 11 checks the electronic signature and determines whether or not the electronic ticket is legitimate, and when it is legitimate, sends to the user terminal 12 an encryption key for accessing the content distribution server that it stores itself. The user terminal 12 accesses the content distribution server 14 using the received encryption key, and receives distribution of content. The present invention may be applied to a system for distributing content.
58 Citations
28 Claims
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1. An information processing apparatus for acquiring predetermined information, the information processing apparatus characterized in that it comprises:
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storage means for storing an electronic ticket indicating the right to acquire said predetermined information;
transmission means for transmitting a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID to another information processing apparatus;
reception means for receiving an encryption key for acquiring said predetermined information transmitted from said other information processing apparatus based on said ticket ID and said electronic signature; and
acquisition means for acquiring said predetermined information using the encryption key received by said reception means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An information processing method of an information processing apparatus for acquiring predetermined information, the information processing method characterized in that it includes:
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a storage step for storing an electronic ticket indicating the right to acquire said predetermined information;
a transmission step for transmitting a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID to another information processing apparatus;
a reception step for receiving an encryption key for acquiring said predetermined information transmitted from said other information processing apparatus based on said ticket ID and said electronic signature; and
an acquisition step for acquiring said predetermined information using the encryption key received in the process of said reception step.
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11. A recording medium on which a computer readable program for controlling an information processing apparatus for acquiring predetermined information is recorded, the program characterized in that it includes:
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a storage control step for controlling storage of an electronic ticket indicating the right to acquire said predetermined information;
a transmission control step for controlling transmission of a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID to another information processing apparatus;
a reception control step for controlling reception of an encryption key for acquiring said predetermined information transmitted from said other information processing apparatus based on said ticket ID and said electronic signature; and
an acquisition control step for controlling use of the encryption key received in the process of said reception control step and acquisition of said predetermined information.
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12. A program for making a computer controlling an information processing apparatus for acquiring predetermined information execute:
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a storage control step for controlling storage of an electronic ticket indicating the right to acquire said predetermined information;
a transmission control step for controlling transmission of a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID to a first information processing apparatus;
a reception control step for controlling reception of an encryption key for acquiring said predetermined information transmitted from said first information processing apparatus based on said ticket ID and said electronic signature; and
an acquisition control step for controlling use of the encryption key received in the process of said reception control step and acquisition of said predetermined information.
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13. An information processing apparatus for managing an electronic ticket, the information processing apparatus characterized in that it comprises:
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storage means for storing a ticket ID for identifying said electronic ticket and an encryption key that makes acquisition of predetermined information corresponding to said ticket ID possible;
reception means for receiving a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID transmitted from another information processing apparatus;
determination means for determining whether or not the electronic signature for said ticket ID is legitimate; and
transmission means for transmitting to said other information processing apparatus based on a determination result by said determination means an encryption key that makes acquisition of said predetermined information corresponding to said ticket ID possible. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An information processing method of an information processing apparatus for managing an electronic ticket, said information characterized in that it includes:
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a storage step for storing a ticket ID for identifying said electronic ticket, and an encryption key that makes acquisition of predetermined information corresponding to each said ticket ID possible;
a reception step for receiving the ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID transmitted from another information processing apparatus;
a determination step for determining whether or not the electronic signature for said ticket ID is legitimate; and
a transmission step for transmitting, based on a determination result in the process of said determination step, to said other information processing apparatus an encryption key that makes acquisition of said predetermined information corresponding to said ticket ID possible.
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26. A recording medium on which a computer readable program for controlling an information processing apparatus for managing electronic tickets is recorded, the program characterized in that it includes:
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a storage control step for controlling storage of a ticket ID for identifying said electronic ticket and of an encryption key that makes acquisition of predetermined information corresponding to each of said ticket IDs possible;
a reception control step for controlling reception of the ticket ID for identifying said electronic ticket and of an electronic signature for said ticket ID transmitted from another information processing apparatus;
a determination control step for controlling determination as to whether or not the electronic signature for said ticket ID is legitimate; and
a transmission control step for controlling, based on a determination result in the process of said determination control step, transmission of the encryption key that makes acquisition of said predetermined information corresponding to said ticket ID possible to said other information processing apparatus.
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27. A program for making a computer for controlling an information processing apparatus for managing electronic tickets execute:
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a storage control step for controlling storage of a ticket ID for identifying said electronic ticket and of an encryption key that makes acquisition of predetermined information corresponding to each of said ticket IDs possible;
a reception control step for controlling reception of the ticket ID for identifying sad electronic ticket and of an electronic signature for said ticket ID transmitted from another information processing apparatus;
a determination control step for controlling determination as to whether or not the electronic signature for said ticket ID is legitimate; and
a transmission control step for controlling, based on a determination result in the process of said determination control step, transmission of the encryption key that makes acquisition of said predetermined information corresponding to said ticket ID possible to said other information processing apparatus.
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28. An information processing system comprising a first information processing apparatus for acquiring predetermined information and a second information processing apparatus for managing electronic tickets, the information processing system characterized in that:
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said first information processing apparatus comprises, first storage means for storing an electronic ticket indicating the right to acquire said predetermined information, first transmission means for transmitting to the second information processing apparatus a ticket ID for identifying said electronic ticket and an electronic signature for said ticket ID, first reception means for receiving an encryption key for acquiring said predetermined information transmitted from said second information processing apparatus based on said ticket ID and said electronic signature, and acquisition means for acquiring said predetermined information using the encryption key received by said first reception means; and
said second information processing apparatus comprises, second storage means for storing the ticket ID for identifying said electronic ticket and the encryption key that makes acquisition of the predetermined information corresponding to each said ticket ID possible, second reception means for receiving the ticket ID for identifying said electronic ticket and the electronic signature for said ticket ID transmitted from said first information processing apparatus, determination means for determining whether or not the electronic signature for said ticket ID is legitimate, and second transmission means for transmitting, based on a determination result of said determination means, to said other information processing apparatus the encryption key that makes acquisition of said predetermined information corresponding to said ticket ID possible.
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Specification