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:
Dec. 13, 2016
Filed:
Apr. 28, 2015
Spyrus, Inc., San Jose, CA (US);
Robert R. Jueneman, San Jose, CA (US);
Duane J. Linsenbardt, San Jose, CA (US);
John N. Young, San Jose, CA (US);
William Reid Carlisle, St. Petersburg, FL (US);
Burton George Tregub, Encino, CA (US);
Spyrus, Inc., San Jose, CA (US);
Abstract
A method for encryption and sealing of a plaintext file by hashing the plaintext file to produce a plaintext hash, encrypting the plaintext file to produce ciphertext, hashing the ciphertext to produce a ciphertext hash, hashing the plaintext hash and the ciphertext hash to produce a result hash, and sealing the ciphertext together with the result hash. This provides verification for non-repudiation and protects against undetected malware corrupting the plaintext or ciphertext files.