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. 26, 2021
Filed:
Jan. 07, 2019
Skyhigh Networks, Llc, Campbell, CA (US);
Hani T. Dawoud, San Jose, CA (US);
Skyhigh Networks, LLC, Campbell, CA (US);
Abstract
A wildcard searchable encryption method enables wildcard search of encrypted text in a cloud-stored encrypted file. In some embodiments, the wildcard searchable encryption method is implemented in a network intermediary, such as a proxy server. The network intermediary encrypts files on behalf of a user or an enterprise destined to be stored on a cloud storage service. The wildcard searchable encryption method performs keyword pre-processing of the file to be encrypted to generate a set of keyword-wildcard combinations in plaintext for some or all of the keywords in the file. The processed file is encrypted using an exact match searchable encryption algorithm. As a result of the encryption process, a search index is generated to include the keyword-wildcard combinations. As thus configured, the wildcard searchable encryption method enables wildcard search of the encrypted text, such as searches for prefixes or suffixes of the keywords.