A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PORTABLE MACHINE, ON-VEHICLE UNIT, AND REMOTE KEYLESS ENTRY SYSTEM
To improve safety of a remote keyless system.SOLUTION: A portable machine comprises: a portable machine reception part having a 3-axis antenna for receiving a request signal containing a measurement signal sent by an on-vehicle unit respectively from a plurality of transmission antennae; a portable machine transmission part for transmitting an answer signal to the on-vehicle unit; and a portable machine control part for controlling the portable machine reception part and the portable machine transmission part. The portable machine control part comprises: a reception signal strength calculation part for calculating a reception signal strength of the measurement signal for each axis; a similarity calculation part for calculating a similarity among the reception signal strengths of the measurement signals sent from the different transmission antennae; and a relay attack determination part for determining whether a relay attack was executed, on the basis of the plurality of similarities.SELECTED DRAWING: Figure 5
【課題】 リモートキーレスシステムの安全性を向上させる。【解決手段】 一実施形態に係る携帯機は、車載器が複数の送信アンテナからそれぞれ送信した測定用信号を含むリクエスト信号を受信する３軸アンテナを備えた携帯機受信部と、前記車載器にアンサー信号を送信する携帯機送信部と、前記携帯機受信部及び前記携帯機送信部を制御する携帯機制御部と、を備え、前記携帯機制御部は、前記測定用信号の軸毎の受信信号強度を算出する受信信号強度算出部と、異なる前記送信アンテナから送信された前記測定用信号の前記受信信号強度の間の類似度を算出する類似度算出部と、複数の前記類似度に基づいて、リレーアタックが行われたか判定するリレーアタック判定部と、を備える。【選択図】 図５
PORTABLE MACHINE, ON-VEHICLE UNIT, AND REMOTE KEYLESS ENTRY SYSTEM
To improve safety of a remote keyless system.SOLUTION: A portable machine comprises: a portable machine reception part having a 3-axis antenna for receiving a request signal containing a measurement signal sent by an on-vehicle unit respectively from a plurality of transmission antennae; a portable machine transmission part for transmitting an answer signal to the on-vehicle unit; and a portable machine control part for controlling the portable machine reception part and the portable machine transmission part. The portable machine control part comprises: a reception signal strength calculation part for calculating a reception signal strength of the measurement signal for each axis; a similarity calculation part for calculating a similarity among the reception signal strengths of the measurement signals sent from the different transmission antennae; and a relay attack determination part for determining whether a relay attack was executed, on the basis of the plurality of similarities.SELECTED DRAWING: Figure 5
【課題】 リモートキーレスシステムの安全性を向上させる。【解決手段】 一実施形態に係る携帯機は、車載器が複数の送信アンテナからそれぞれ送信した測定用信号を含むリクエスト信号を受信する３軸アンテナを備えた携帯機受信部と、前記車載器にアンサー信号を送信する携帯機送信部と、前記携帯機受信部及び前記携帯機送信部を制御する携帯機制御部と、を備え、前記携帯機制御部は、前記測定用信号の軸毎の受信信号強度を算出する受信信号強度算出部と、異なる前記送信アンテナから送信された前記測定用信号の前記受信信号強度の間の類似度を算出する類似度算出部と、複数の前記類似度に基づいて、リレーアタックが行われたか判定するリレーアタック判定部と、を備える。【選択図】 図５
PORTABLE MACHINE, ON-VEHICLE UNIT, AND REMOTE KEYLESS ENTRY SYSTEM
携帯機、車載器、及びリモートキーレスエントリーシステム
MIYAZAWA AKIRA (author)
2019-11-28
Patent
Electronic Resource
Japanese
PORTABLE DEVICE, ON-VEHICLE APPARATUS, AND REMOTE KEYLESS ENTRY SYSTEM
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