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Tamper detection for vehicle controller

  • US 6,678,606 B2
  • Filed: 09/14/2001
  • Issued: 01/13/2004
  • Est. Priority Date: 09/14/2001
  • Status: Expired due to Term
First Claim
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1. A system for detecting modification of control data in an electronically controlled engine, comprising:

  • a memory containing the control data;

    data storage containing a first stored value, which corresponds to the result of applying a first hash function to a first portion of said memory;

    a processor;

    a computer-readable medium, in communication with said processor, encoded with programming instructions executable by said processor to;

    apply the first hash function to the first portion of said memory to obtain a first calculated hash value while the engine is operating; and

    generate an error signal in an error log if the first calculated hash value and the first stored value are not equal.

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