I am using a stm32h753 controller for my project, in which I need to store public key which could be updated during runtime. Is there any way I could store it inside the controller securely? Also do the stm32h753's flash has OTP? I could not find one in the reference manual.
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Page 25 says 2KB of user option bytes. Can this be used in someway? I couldn't find memory map address or APIs regarding this.