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Details

Veröffentlichungs-Nr.

EP3076329

Aktenzeichen

EP16154434

Anmeldetag

5. Februar 2016

Veröffentlichung

19. Juni 2019

Erteilung

19. Juni 2019

Rechtsraum

EP

IPC

G06F21/62

Abstract

Methods and systems described herein may perform a word-level encryption and a sentence-level encryption of one or more documents. The word-level encryption and the sentence-level encryption may be performed with an encryption key generated by a client device. A document indexer is stored in the one or more storage networks. The document indexer includes encrypted word frequencies and encrypted word position identifiers based on the encrypted words of the one or more encrypted documents. The client device receives search terms and encrypts the search terms with the encryption key. The one or more encrypted documents are identified in the one or more storage networks based on searching with the encrypted search terms and at least one of the encrypted word frequencies and/or the encrypted word position identifiers.

Anmelder

Firmen

NTT DOCOMO, INC.
NTT DoCoMo, Inc.

Land

🇯🇵 Japan

Fachgebiete