Digital signature or electronic seal authentication system and recognized mark management program
First Claim
1. A digital mark certification system for providing a mark for data certification based on a digital mark, comprising:
- a mark management processor for embedding certification information of a mark creation demander in a demander'"'"'s mark design to create a visible mark on a display in response to demander'"'"'s request; and
a mark distributor for distributing a decoding key for decoding of the mark and the visible mark to a demander'"'"'s terminal device.
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Accused Products
Abstract
A mark management server for certifying digital data based on a digital mark to enable realization of identity authentication and data certification when the digital data is transmitted or received on a network. The server includes a mark management processor for receiving a mark registration request demanding a new registration or updating of the mark from a mark terminal device, embedding identity authentication information obtained by encrypting information for identity authentication of a request originator with use of a cryptograph key in a mark design of the request originator to create a mark, and distributing the created mark to the request originator together with a decoding key for decoding of the identity authentication information attached thereto, and a mark decoding key management processor for registering the decoding key for decoding of the encrypted identity authentication information in a mark decoding key management DB and transmitting the registered decoding key to the associated mark terminal device.
71 Citations
20 Claims
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1. A digital mark certification system for providing a mark for data certification based on a digital mark, comprising:
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a mark management processor for embedding certification information of a mark creation demander in a demander'"'"'s mark design to create a visible mark on a display in response to demander'"'"'s request; and
a mark distributor for distributing a decoding key for decoding of the mark and the visible mark to a demander'"'"'s terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A terminal device for attaching a mark for data certification based on a digital mark to digital data, comprising:
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a mark processor for transmitting a mark creation request to a digital mark certification system, for receiving from the system a mark obtained by encrypting information including demander'"'"'s feature with use of a cryptograph key and embedding the certification information in demander'"'"'s mark design, and for storing the mark therein;
a decoding key database for receiving and storing a decoding key for decoding of the mark; and
a transmitter for encrypting log information on the digital data with use of the cryptograph key, embedding the encrypted log information in the mark, and transmitting the mark together with the digital data.
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9. An electronic seal authentication system comprising:
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at least one client terminal; and
at least one mark management server for managing a mark to be used at the client terminal, wherein the mark management server, when receiving a mark registration or modification request from the client terminal, embeds information necessary for identity authentication of a digital data creator in the mark and transmits the information-embedded mark to the client terminal, and the client terminal includes means for embedding information necessary for document certification of the digital data in the mark and means for performing either one of both of the identity authentication and document certification of the digital data. - View Dependent Claims (10)
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11. A digital mark authentication method for providing a mark for data certification based on a digital mark comprising:
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a step of embedding certification information of a mark creation demander in a demander'"'"'s mark design to create a visible mark on a display in response to demander'"'"'s request; and
a step of distributing a decoding key for decoding of the mark and the visible mark to a demander'"'"'s terminal device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for operating a terminal device for attaching a mark for data certification based on a digital mark to digital data, comprising:
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a step of transmitting a mark creation request to a digital mark certification system, for receiving from the system a mark obtained by encrypting information including demander'"'"'s feature with use of a cryptograph key and embedding the certification information in demander'"'"'s mark design, and for storing the mark therein;
a step of receiving and storing a decoding key for decoding of the mark; and
a step of encrypting log information on the digital data with use of the cryptograph key, embedding the encrypted log information in the mark, and transmitting the mark together with the digital data.
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19. A digital mark certification program for providing a mark for data certification based on a digital mark, comprising:
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a step of embedding certification information of a mark creation demander in a demander'"'"'s mark design to create a visible mark on a display in response to demander'"'"'s request; and
a step of distributing a decoding key for decoding of the mark and the visible mark to a demander'"'"'s terminal device.
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20. A program running on a terminal device for attaching a mark for data certification based on a digital mark to digital data, comprising:
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a step of transmitting a mark creation request to a digital mark certification system, receiving from the system a mark obtained by encrypting information including demander'"'"'s feature with use of a cryptograph key and embedding the certification information in demander'"'"'s mark design, and for storing the mark therein;
a step of receiving and storing a decoding key for decoding of the mark; and
a step of encrypting log information on the digital data with use of the cryptograph key, embedding the encrypted log information in the mark, and transmitting the mark together with the digital data.
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Specification