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:
Sep. 03, 2019
Filed:
Jul. 24, 2015
Skyhigh Networks, Inc., 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 document. In some embodiments, the wildcard searchable encryption method is implemented in a network intermediary, such as a proxy server. The network intermediary encrypts documents on behalf of a user or an enterprise destined to be stored on a cloud service provider. The wildcard searchable encryption method performs keyword pre-processing of the document to be encrypted to generate a set of keyword-wildcard combinations in plaintext for some or all of the keywords in the document. The processed document 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.