The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2024
Filed:
Jul. 04, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
There is provided a chatbot system including a plurality of user terminals, a chatbot, and a chat server. The chatbot includes a memory and a processor configured to create a message from data which is acquired from an external service, receive, as an input, a list including a user ID of a user terminal which has utilization authority for the data, generate a policy-equipped ciphertext by an encryption algorithm of ciphertext policy attribute-based encryption, and transmit the policy-equipped ciphertext to the chat server, and each of the user terminals includes a memory and a processor configured to receive a policy-equipped ciphertext from the chat server and decrypt the policy-equipped ciphertext using an attribute-equipped secret key which is generated on the basis of a user ID of the user terminal.