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Secured coprocessor comprising an event detection circuit

  • US 20060259673A1
  • Filed: 04/05/2006
  • Published: 11/16/2006
  • Est. Priority Date: 04/05/2005
  • Status: Active Grant
First Claim
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1. A method for securing an execution of a command by a coprocessor, the method comprising:

  • putting the coprocessor into an error mode by default as soon as the execution of the command begins;

    monitoring the execution of the command so as to detect any execution error;

    lifting the error mode at an end of the execution of the command if no error has been detected in the execution of the command, or otherwise maintaining the error mode; and

    declaring the error mode to an outside of the coprocessor if a particular event happens while the coprocessor is in the error mode.

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