Computer product, recording medium, communications apparatus, and communications method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9491149
APP PUB NO 20150113280A1
SERIAL NO

14582855

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Abstract

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Improvement of the security of communication is facilitated. A server receives from an on-vehicle device, encrypted data obtained by encrypting ECU information using key information (111-1#C), and identification information (112-1#C). Thereafter, the server determines from the identification information (112-1#C), whether identification information of a next key to be used after identification information (112-1) is stored. The server determines that the identification information of the next key to be used after the identification information (112-1) is not stored, and obtains key information (111-2#S) and identification information (112-2#S) to identify key information (111-2) as the next key. The server encrypts the key information (111-2#S) and the identification information (112-2#S) using key information (111-1#S), and transmits encrypted data and identification information (112-1#S) to the on-vehicle device.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI18047

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maruyama, Hidefumi Mishima, JP 14 216

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DENSO CORPORATION (1)
2008/0059,806 Vehicle information rewriting system 17 2007
 
SOCIONEXT INC. (1)
2011/0010,435 VEHICLE MOUNTED DEVICE, SERVER DEVICE, AND COMMUNICATION SYSTEM 4 2010
 
INTEL CORPORATION (2)
* 2011/0150,223 WIRELESS DEVICE AND METHOD FOR REKEYING WITH REDUCED PACKET LOSS FOR HIGH-THROUGHPUT WIRELESS COMMUNICATIONS 11 2009
* 2012/0057,696 MULTI-KEY CRYPTOGRAPHY FOR ENCRYPTING FILE SYSTEM ACCELERATION 29 2011
 
CINGULAR WIRELESS (1)
2004/0083,393 Dynamic password update for wireless encryption system 24 2002
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
2012/0155,647 CRYPTOGRAPHIC DEVICES & METHODS 4 2010
* Cited By Examiner

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