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:
May. 25, 2021
Filed:
Mar. 23, 2018
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Rick G. Chang, Santee, CA (US);
NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US);
Abstract
A method and system for encrypting and decrypting data messages which are communicated between two devices. The method for encrypting/decrypting data messages uses hybrid symmetric/asymmetric encryption, where symmetric encryption is used for data records and asymmetric encryption is used to encode new symmetric keys. All data records and symmetric key data are sent in a single data stream. The method allows the data producer to create a new symmetric key at any desired time, and also allows the data consumer to recover symmetric keys needed for decryption, on the fly by using the cipher text data stream itself, as the data messages are consumed. Data consumption can be at a later time and independent of production, and symmetric keys need not be shared between producer and consumer in advance.