Method for Protecting Against External Interventions into a Master/Slave Bus System and Master/Slave Bus System
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorDejan Djordjevic
Life of this patent
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Abstract
The method serves for protecting against external interventions into a master/slave bus system. The master/slave bus system contains at least one slave and at least one authorized master for outputting an authentic command. The authentic command instructs the slave to carry out a function. Accordingly, the authenticity of the command which has been transmitted over the bus is checked. The execution of the function is enabled only in the event of a positive check result.
Claims9
A method for protecting against external interventions into a master/slave bus system having at least one slave and at least one authorized master for outputting an authentic command for instructing the slave to carry out a function, which comprises the step of:
- checking an authenticity of a command which has been transmitted over a bus;
- and
- enabling an execution of the function in an event of a positive check result.
A master/slave bus system, comprising:
- at least one slave;
- at least one authorized master for outputting an authentic command for instructing said slave to carry out a function;
- a bus connecting said slave to said authorized master;
- and
- authenticity checking means configured to check an authenticity of the authentic command transmitted over said bus and to enable an execution of the function only in an event of a positive check result.
Dependencies are inferred from the claim text.