Method for starting vehicle without key

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Method for starting vehicle without key

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LIU PING / TAN CHENGYU / ZHANG PENG / WANG XIAOWEI / LUO WEI / YUAN YE

The invention relates to a method for starting a vehicle without a key. Vehicle starting is achieved with low cost and high safety. The method comprises the steps that a BCM receives a user input signal to generate a random factor R1, and a starting request signal is sent to a vehicle machine; the vehicle machine lightens a screen to request a user to confirm, and if the vehicle machine receives aconfirmation signal, the starting request signal is forwarded to a cloud platform; the cloud platform generates a control instruction original text T and a random factor R2, T and R1 are encrypted byusing a private key of an asymmetric encryption algorithm to generate E, and the R2 is used for performing a one-way hash algorithm on the E to generate M; the E and the M are sent to the vehicle machine, and the R2 is sent to a mobile terminal; if the vehicle machine receives the R2, the R2, the E and the M are forwarded to the BCM; the BCM uses R2 to perform the one-way hash algorithm on the Eto generate M', and if the M' is the same as the M, a ciphertext E passes integrity check; and the BCM uses a public key of an asymmetric cryptographic algorithm to decrypt the E to obtain T and R1',and if the R1' is the same as R1 and various parameters of the control instruction original text T meet conditions, the BCM starts the vehicle according to the T.

本方案涉及一种无钥匙启动车辆的方法，以低成本、高安全性实现车辆启动。包括：BCM接收用户输入信号生成随机因子R1，发送启动请求信号至车机；车机点亮屏幕，请求用户确认，若车机收到确认信号，转发启动请求信号至云平台；云平台生成控制指令原文T和随机因子R2，使用非对称加密算法的私钥对T、R1加密生成E，使用R2对E进行单向散列算法生成M；发送E、M至车机，发送R2至移动终端；若车机收到R2，转发R2、E、M至BCM；BCM使用R2对E、进行单向散列算法生成M’；若M’与M相同，则密文E完整性校验通过；BCM使用非对称密码算法的公钥解密E得到T、R1’；若R1’与R1相同且控制指令原文T各项参数满足条件，则BCM根据T执行启动车辆。

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Document information

Title :

Method for starting vehicle without key

Additional title:

一种无钥匙启动车辆的方法

Contributors:

LIU PING (author) / TAN CHENGYU (author) / ZHANG PENG (author) / WANG XIAOWEI (author) / LUO WEI (author) / YUAN YE (author)

Publication date :

2020-10-30

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze