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2 votes
Accepted

ESP32 Wipe Sensitive Key Data

You can use esptool.py to run an erase_flash operation. Erase Flash: erase_flash & erase_region To erase the entire flash chip (all data replaced with 0xFF bytes): esptool erase_flash To erase a ...
Majenko's user avatar
  • 106k
1 vote

Where can I store secret keys?

As @the busybee already said, the ESP8266 is the wrong chip for such applications. Since you always have the possibility to change the firmware. You could write your own bootloader that only accepts ...
Dario.Casciato's user avatar
1 vote

Where can I store secret keys?

The ESP8266 is the wrong device for this. You cannot store anything inside it with protection against read-out. Any user software is in external memory, so even hobbyists can read all of it. If you ...
the busybee's user avatar
  • 2,466
1 vote

How to allow cross-domain requests with ESP8266WebServer.h ? - CORS policy: Access-Control-Allow-Origin

The issue is URL specific. Indeed, if I change API, namely const Qresponse = await fetch( "https://zenquotes.io/api/random" ); by for example: const Qresponse = await fetch( "https://...
user2718593's user avatar

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