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. 03, 2023
Filed:
May. 05, 2020
Forcepoint, Llc, Austin, TX (US);
Benjamin Shih, Baltimore, MD (US);
Forcepoint LLC, Austin, TX (US);
Abstract
A mechanism for probabilistically determining the contents of an encrypted file is provided, such that a transfer of the encrypted file can be restricted according to rules associated with an unencrypted version of the file. Embodiments generate a file size table of a subset of files, where each entry of the file size table includes a size information regarding the unencrypted file. Embodiments compare the size of the encrypted file against the file sizes and compressed file size ranges to determine whether the encrypted file has a match. If the size of the encrypted file has a single match in the table, then there is a high probability that the file associated with the matching entry is the unencrypted version of the encrypted file. Rules associated with restricting access of the file related to the matching entry can be used to control transfer of the encrypted file.