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Secure bootloader + secure firmware upgrade

Question asked by Charles on Jan 17, 2017
Latest reply on Jun 17, 2017 by Lucas C

I find AN4028 STM32 secure firmware upgrade (SFU) overview , AN is unfortunately from 2012 and ending sentence "For more details about the complete solution, please contact your local ST salesrepresentative."

I seeking a safe solution for distribution new firmware, in other words boot loader with fw decryption.

Exist such bootloader directly from ST or you know about free publised project this bootloader for STM32F1, F3?