Information processing apparatus and method for blockchain-based document management

Patent metadata

Field	Value
Publication number	US-11528385-B2
Application number	US-202117146945-A
Country	US
Kind code	B2
Filing date	Jan 12, 2021
Priority date	Jan 16, 2020
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

An information processing apparatus which cooperates with a management service for receiving a document via a network and storing the document and a blockchain service for managing information about the document on a block-by-block basis, defining an association with a previous and/or subsequent block for each block, and then managing a plurality of blocks with a plurality of nodes includes an editing unit configured to perform editing processing on a source document to generate a new document, a transmission unit configured to transmit the generated document to the management service, and a cooperation unit configured to register information indicating that the source document was edited with the blockchain service, wherein, in response to the editing unit being confirmed to be a service trusted by the blockchain service, the information indicating that the source document was edited is registered with the blockchain service.

First claim

What is claimed is:

1. An information processing apparatus which cooperates with a management service for receiving a document via a network and storing the document and a blockchain service for managing information about the document on a block-by-block basis, defining an association with a previous and/or subsequent block for each block, and then managing a plurality of blocks with a plurality of nodes, the information processing apparatus comprising:
at least one processor and at least one memory coupled to the at least one processor and having instructions stored thereon that, when executed by the at least one processor, cooperate to act as:
a provision unit configured to provide an editing screen for receiving an instruction for editing the source document, the editing screen being also used for receiving an instruction for using the blockchain service;
an editing unit configured to perform editing processing on a source document to generate a new document;
a transmission unit configured to transmit the generated document to the management service; and
a cooperation unit configured to register information indicating that the source document was edited with the blockchain service,

wherein, in response to the editing unit being confirmed to be a service trusted by the blockchain service, the information indicating that the source document was edited is registered with the blockchain service.

2. The information processing apparatus according to claim 1 , wherein the source document is a document generated by scanning an original with a scanning unit included in the information processing apparatus.

3. The information processing apparatus according to claim 1 , wherein, in a case where a user who operates the information processing apparatus has authority to register the generated document with the blockchain service, the provision unit provides the editing screen.

4. The information processing apparatus according to claim 3 , wherein, in a case where a user who operates the information processing apparatus does not have authority to register the generated document with the blockchain service, the provision unit provides the editing screen in such a way as not to receive an instruction for using the blockchain service.

5. The information processing apparatus according to claim 1 , wherein the editing unit confirms that the source document has not been tampered by calculating a hash value of the source document and checking whether the calculated hash value is currently registered with the blockchain service, and then generates information indicating that the source document was edited.

6. A control method for an information processing apparatus which cooperates with a management service for receiving a document via a network and storing the document and a blockchain service for managing information about the document on a block-by-block basis, defining an association with a previous and/or subsequent block for each block, and then managing a plurality of blocks with a plurality of nodes, the control method comprising:
providing an editing screen for receiving an instruction for editing the source document, the editing screen being also used for receiving an instruction for using the blockchain service;
performing editing processing on a source document to generate a new document;
transmitting the generated document to the management service; and
registering information indicating that the source document was edited with the blockchain service,
wherein, in response to the editing processing being confirmed to be a service trusted by the blockchain service, the information indicating that the source document was edited is registered with the blockchain service.

7. The control method according to claim 6 , wherein the source document is a document generated by scanning an original with a scanning unit included in the information processing apparatus.

8. The control method according to claim 6 , wherein, in a case where a user who operates the information processing apparatus has authority to register the generated document with the blockchain service, the editing screen is provided.

9. The control method according to claim 8 , wherein, in a case where a user who operates the information processing apparatus does not have authority to register the generated document with the blockchain service, the editing screen is provided in such a way as not to receive an instruction for using the blockchain service.

10. The control method according to claim 6 , further comprising confirming that the source document has not been tampered by calculating a hash value of the source document and checking whether the calculated hash value is currently registered with the blockchain service, and then generating information indicating that the source document was edited.

11. A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform a control method for an information processing apparatus which cooperates with a management service for receiving a document via a network and storing the document and a blockchain service for managing information about the document on a block-by-block basis, defining an association with a previous and/or subsequent block for each block, and then managing a plurality of blocks with a plurality of nodes, the control method comprising:
providing an editing screen for receiving an instruction for editing the source document, the editing screen being also used for receiving an instruction for using the blockchain service;
performing editing processing on a source document to generate a new document;
transmitting the generated document to the management service; and
registering information indicating that the source document was edited with the blockchain service,
wherein, in response to the editing processing being confirmed to be a service trusted by the blockchain service, the information indicating that the source document was edited is registered with the blockchain service.

Assignees

• Canon Kk

Inventors

• Arakawa Junya

Classifications

• H04N1/64

  Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor {(H04N19/00 takes precedence)} · CPC title

• G06F21/602

  Providing cryptographic facilities or services · CPC title

• H04N1/3876

  Recombination of partial images to recreate the original image · CPC title

• H04N1/4486 Primary

  using digital data encryption · CPC title

• G06F21/64

  Protecting data integrity, e.g. using checksums, certificates or signatures · CPC title