发明名称 |
DATA TRANSMISSION METHOD, AND TACHOGRAPH SYSTEM |
摘要 |
In a data transmission method for a tachograph system, digital messages are transmitted between a speed transmitter (MS) and a recording unit (RU). Said digital messages contain a pair of keys comprising a public key (KMP, KRP) and a private key (KMS, KRS), as well as a certificate (ZM, ZR) derived from the respective pair of keys. The public keys (KMP, KRP) and the certificates (ZM, ZR) are mutually verified between the recording unit (RU) and the speed transmitter (MS). If the verification is positive, the speed transmitter (MS) detects sensor data, and a digital message is generated therefrom. In addition, the speed transmitter (MS) generates authentication data for the message in accordance with the pair of keys (KMP, KMS) thereof. The message and the authentication data are transmitted to the recording unit and are processed there in accordance with a validity of the authentication data verified by the recording unit (RU). |
申请公布号 |
WO2009095286(A2) |
申请公布日期 |
2009.08.06 |
申请号 |
WO2009EP50112 |
申请日期 |
2009.01.07 |
申请人 |
CONTINENTAL AUTOMOTIVE GMBH;BOEHLER, DETLEF;GRILL, THOMAS;HESS, ERWIN;MEYER, BERND;PLANKENHORN, HORST |
发明人 |
BOEHLER, DETLEF;GRILL, THOMAS;HESS, ERWIN;MEYER, BERND;PLANKENHORN, HORST |
分类号 |
H04L29/06;H04L12/22 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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