Patent · US Active

System and method for counter mode encrypted communication with reduced bandwidth

US8983069B2 · kind B2 · utility

13Cited by

1References

22Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jorge Guajardo Merchan · Pittsburgh, US
Attila Altay Yavuz · Tampa, US
Benjamin Glas · Stuttgart, DE
Markus Ihle · Reutlingen, DE
Hamit Hacioglu · Stuttgart, DE
Karsten Wehefritz · Schwieberdingen, DE

Key dates

Filing date	Mar 14, 2013
Grant date	Mar 17, 2015
Priority date	—
Expiry date	Oct 9, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/34
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.