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:
Feb. 10, 2026
Filed:
Mar. 22, 2021
Ntt, Inc., Tokyo, JP;
Satoshi Takahashi, Musashino, JP;
Koji Chida, Musashino, JP;
Koki Hamada, Musashino, JP;
Atsunori Ichikawa, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
Data search by secure computation is efficiently performed and retrieved data is safely provided. A searcher terminal acquires condition data. The searcher terminal extracts a feature from the condition data. The searcher terminal encrypts the feature of the condition data. A secure search apparatus acquires a search result indicating a ciphertext of target data corresponding to a feature of target data similar to the feature of the condition data while keeping the feature of the target data and the feature of the condition data secret. The secure search apparatus transmits the search result to an encryption apparatus and the searcher terminal. The searcher terminal acquires the ciphertext of the target data indicated by the search result. The encryption apparatus transmits a decryption key to the searcher terminal. The searcher terminal decrypts the ciphertext of the target data using the decryption key.