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Patent Searching and Data


Title:
MOBILE DE-WHITENING
Document Type and Number:
WIPO Patent Application WO/2019/135373
Kind Code:
A1
Abstract:
Systems and methods are disclosed and include a processor configured to execute instructions stored in a nontransitory computer-readable medium. The instructions include generating first message authentication code (MAC) bytes (111-1) based on a shared secret key (102). The instructions include generating first nonce bytes (109-1) and an authenticated packet (110) based on first MAC bytes, the first nonce bytes, and a message byte (104). The instructions include generating a de-whitened tone byte (113) based on the shared secret key. The instructions include generating a message packet (140) that includes the authenticated packet and the de-whitened tone byte. Generating the message packet includes pseudo-randomly identifying a first location of the authenticated packet and inserting the de-whitened tone byte at the first location. The instructions include transmitting the message packet to the peripheral device and establishing a communication link (50) between a portable device (10) and a peripheral device in response to the peripheral device validating the message packet.

Inventors:
STITT Raymond (C/O DENSO International America, Inc. 24777 Denso Drive, P.O. Box 504, Southfield Michigan ., 48086, US)
PETERSON Thomas (C/O DENSO International America, Inc. 24777 Denso Drive, P.O. Box 504, Southfield Michigan ., 48086, US)
JAGER Karl (C/O DENSO International America, Inc. 24777 Denso Drive, P.O. Box 504, Southfield Michigan ., 48086, US)
GOLSCH Kyle (C/O DENSO International America, Inc. 24777 Denso Drive, P.O. Box 504, Southfield Michigan ., 48086, US)
Application Number:
JP2018/047413
Publication Date:
July 11, 2019
Filing Date:
December 24, 2018
Export Citation:
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Assignee:
DENSO INTERNATIONAL AMERICA, INC. (24777 Denso Drive, P.O.Box 5047 Southfield Michigan, 48086, US)
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
G07C9/00; B60R25/00
Attorney, Agent or Firm:
JIN Shunji (6th Floor, Takisada Bldg. 2-13-19, Nishiki, Naka-k, Nagoya-city Aichi 03, 〒4600003, JP)
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