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发明授权
CN106603483B 车辆系统和认证方法 有权

车辆系统和认证方法
摘要：
本公开涉及车辆系统和认证方法。提供一种由主ECU和一般ECU构成的车辆系统。一般ECU把数字签名附加到包括数据(例如，程序的摘要值)的发送数据，并把所述发送数据发送给主ECU。主ECU验证数字签名和所述数据，当所述数字签名和所述数据两者都有效时，判定所述一般ECU有效。主ECU把数字签名附加到包括主ECU的数据和会话密钥的发送数据，并把所述发送数据发送给一般ECU。一般ECU验证所述数字签名和所述数据，当所述数字签名和所述数据两者都有效时，一般ECU把包含在发送数据中的会话密钥用作进行后续通信时的公共密钥。
摘要（英）：

A vehicle system includes a master ECU and a general ECU. The general ECU attaches a digital signature to transmission data including data (for example, a digest value of a program) and transmits the transmission data to the master ECU. The master ECU verifies the digital signature and the data and, when both the digital signature and the data are valid, determines that the general ECU is valid. The master ECU attaches a digital signature to transmission data including data of the master ECU and a session key and transmits the transmission data to the general ECU. The general ECU verifies the digital signature and the data and, when both the digital signature and the data are valid, the general ECU uses the session key included in the transmission data as a common key when performing subsequent communications.

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