Design flow chart of secure application code.

rohitchudasama — Fri, 21 Apr 2017 22:12:03 GMT

I want to design my own application code that have 3 below features.

1) Can not read from flash without my secure key.

2) Can not write into flash without my private key.

3) My code can also able to flash the data into flash memory once i enter exact key. And during flashing no one can retrieve my data.

SO i need a help to make flow chart and basic idea to make that possible.

I am using MKE18F512VLL16. I want to send and receive the data via LPUART0.

Thank you.

Re: Design flow chart of secure application code.

Hui_Ma — Wed, 10 May 2017 09:01:39 GMT

Hi,

There is a very useful application note AN4507 about Kinetis security and Flash protection feature.

More detailed info, please check here.

In fact, when the Kinetis chip was secured. The JTAG/SWD debug port can not access the on-chip Flash.

Customer application code can access internal Flash whatever the Kinetis was secured or not.

So, customer can use UART module as an interface to receive the key to lock/unlock Kinetis.

Wish it helps.

Have a great day,
Ma Hui

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topic Design flow chart of secure application code. in Kinetis Microcontrollers

Design flow chart of secure application code.

Re: Design flow chart of secure application code.