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Lockbox and frequent execution of sensitive code

Question asked by pminin on Jul 6, 2009
Latest reply on Jul 20, 2009 by PhilG

In my application, there is a need to execute same piece of sensitive code rather often. I would like to use Lockbox and Secure Mode for it. The entire code doesn't fit L2 SRAM, so a major part of it must reside in SDRAM.

 

If I run authentification every time for secure code piece, the processing overhead and time delay are both too high. But if I stay all the time in Secure Mode and try to run code from SDRAM, it looks intrinsically unsafe.

 

Is there any way to use Lockbox in this case?

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