A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
AUTHENTICATION SYSTEM AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To enhance security property against illegal authentication that utilizes radio communication.SOLUTION: A portable machine 2 includes: a Q value estimation part 217 which estimates a Q value of an LF transmission antenna 6 by using a reception voltage of an LF signal that is transmitted from BCM; and an illegality decision part 221 which decides presence/no presence of illegality depending on whether or not the Q value estimated at the Q value estimation part 217 agrees with an expected value of the Q value of the LF transmission antenna 6. In a case where the illegality decision part 221 decides that there is no illegality and code collation is established at a code collation part 213, a response signal is returned from an RF driver 24 to the BCM, and on the other hand, in a case where the illegality decision part 221 decides that there is illegality, no response signal is returned from the RF driver 24.SELECTED DRAWING: Figure 4
【課題】無線通信を利用した不正な認証に対するセキュリティ性をより高める。【解決手段】携帯機２は、ＢＣＭから送信されるＬＦ信号の受信電圧を用いてＬＦ送信アンテナ６のＱ値を推定するＱ値推定部２１７と、Ｑ値推定部２１７で推定したＱ値と、ＬＦ送信アンテナ６のＱ値の期待値とが一致するか否かによって不正の有無を決定する不正決定部２２１とを備え、不正決定部２２１で不正無しと決定するとともにコード照合部２１３でのコード照合が成立した場合に、ＲＦドライバ２４からＢＣＭへレスポンス信号を返信する一方、不正決定部２２１で不正有りと決定した場合には、ＲＦドライバ２４からレスポンス信号を返信しない。【選択図】図４
AUTHENTICATION SYSTEM AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To enhance security property against illegal authentication that utilizes radio communication.SOLUTION: A portable machine 2 includes: a Q value estimation part 217 which estimates a Q value of an LF transmission antenna 6 by using a reception voltage of an LF signal that is transmitted from BCM; and an illegality decision part 221 which decides presence/no presence of illegality depending on whether or not the Q value estimated at the Q value estimation part 217 agrees with an expected value of the Q value of the LF transmission antenna 6. In a case where the illegality decision part 221 decides that there is no illegality and code collation is established at a code collation part 213, a response signal is returned from an RF driver 24 to the BCM, and on the other hand, in a case where the illegality decision part 221 decides that there is illegality, no response signal is returned from the RF driver 24.SELECTED DRAWING: Figure 4
【課題】無線通信を利用した不正な認証に対するセキュリティ性をより高める。【解決手段】携帯機２は、ＢＣＭから送信されるＬＦ信号の受信電圧を用いてＬＦ送信アンテナ６のＱ値を推定するＱ値推定部２１７と、Ｑ値推定部２１７で推定したＱ値と、ＬＦ送信アンテナ６のＱ値の期待値とが一致するか否かによって不正の有無を決定する不正決定部２２１とを備え、不正決定部２２１で不正無しと決定するとともにコード照合部２１３でのコード照合が成立した場合に、ＲＦドライバ２４からＢＣＭへレスポンス信号を返信する一方、不正決定部２２１で不正有りと決定した場合には、ＲＦドライバ２４からレスポンス信号を返信しない。【選択図】図４
AUTHENTICATION SYSTEM AND PORTABLE MACHINE
認証システム、及び携帯機
TOKUNAGA HIROKI (author)
2017-07-13
Patent
Electronic Resource
Japanese
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