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:
Mar. 17, 2015
Filed:
Mar. 14, 2013
Robert Bosch Gmbh, Stuttgart, DE;
Jorge Guajardo Merchan, Pittsburgh, PA (US);
Attila A. Yavuz, Pittsburgh, PA (US);
Benjamin Glas, Stuttgart, DE;
Markus Ihle, Kusterdingen, DE;
Hamit Hacioglu, Stuttgart, DE;
Karsten Wehefritz, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In a counter mode encryption scheme, a sending device sends a first message including first cipher text and a first counter used to generate the first cipher text to a receiving device for decryption. The sending device subsequently generates a second counter for generating second cipher text. The sending device sends a second message including the second cipher text and intermediate state data corresponding to a change between the first counter second counter to the receiving device for decryption. The intermediate state data are represented by a smaller number of bits than the first counter. The method enables improved counter mode encrypted communication in networks that lose one or more intermediate messages between the first message and the second message.