ON-BOARD DEVICE, GROUND DATA MANAGEMENT DEVICE, GROUND-TO-RAILCAR COMMUNICATION SECURITY SYSTEM, AND GROUND-TO-RAILCAR COMMUNICATION METHOD

WIPO Patent Application WO/2017/187632

A1

The purpose of the present invention is to provide an on-board device capable of ensuring a high level of security even on public wireless lines. This on-board device, which is installed in a train, comprises: a second on-board wireless communication unit 102 serving as an on-board wireless communication unit which communicates wirelessly with the ground side; and an on-board ground-to-railcar communication security unit 106 which encodes or decodes wireless communication data. The on-board ground-to-railcar communication security unit 106 comprises: an on-board secret key holding unit 162 which holds a plurality of secret keys to which secret key numbers for use in encoding or decoding wireless communication data have been assigned; an on-board secret key selection unit 161 which selects one secret key from the on-board secret key holding unit 162 using the secret key number calculated using train information specific to the train; and an on-board encoding/decoding processing unit 163 which encodes or decodes the wireless communication data using one secret key selected by the on-board secret key selection unit 161.

KAEDE SATOSHI (JP)
TSUJIMOTO NORIHIRO (JP)
MATSUDA TETSUSHI (JP)

PCT/JP2016/063481

November 02, 2017

April 28, 2016

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MITSUBISHI ELECTRIC CORP (JP)

B61L23/14; B60L15/40; B61L3/12; H04L9/14; H04W4/40; H04W4/42; H04W12/04

WO2015102054A1	2015-07-09
WO1998041435A1	1998-09-24

JP2009029298A	2009-02-12
JP2000233750A	2000-08-29

TAKAMURA, Jun (JP)

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