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    • 7. 发明申请
    • Method For Operating A Tachograph And Tachograph
    • 运行行车记录仪和行车记录仪的方法
    • US20120269341A1
    • 2012-10-25
    • US13504848
    • 2010-10-18
    • Klaus HoffmannAndreas Lindinger
    • Klaus HoffmannAndreas Lindinger
    • G06F21/22
    • G07C5/085G05B19/0428G05B2219/23464G06F21/572G06F2221/2129H04L9/3247H04L2209/84
    • A method for operating a tachograph having an application controller and a safety controller. A memory is associated with the application controller and a further memory is associated with the safety controller. An encrypted program code having at least one associated signature is made available to the safety controller. The encrypted program code is decrypted by means of the security controller and verified by the at least one signature. It is detected whether the decrypted program code (EPC) is intended for the application controller and/or for the security controller. Depending on what is detected, the program in the memory and/or the further program in the further memory is at least partially replaced by the decrypted program code and, depending on a result of the verification, the at least partially replaced program and/or the at least partially replaced further program is released for executing.
    • 一种用于操作具有应用控制器和安全控制器的行驶记录仪的方法。 存储器与应用控制器相关联,另外的存储器与安全控制器相关联。 具有至少一个关联签名的加密程序代码可用于安全控制器。 加密的程序代码通过安全控制器解密并由至少一个签名验证。 检测解密的程序代码(EPC)是否用于应用控制器和/或安全控制器。 根据检测到的内容,存储器中的程序和/或另外存储器中的另一程序至少部分地被解密的程序代码替代,并且根据验证的结果,至少部分替换的程序和/或 释放至少部分替换的另外的程序来执行。