Hardware:

Board: ESP32 Dev Module
Core Installation/update date: 11/jul/2017
IDE name: Arduino IDE 1.8.3.
Flash Frequency: 40Mhz
Upload Speed: 115200

Hi,
I'm trying to enable Flash Encryption.
The ESP IDF documentation says (http://esp-idf.readthedocs.io/en/latest/security/flash-encryption.html)

"Flash Encryption Initialisation
The bootloader must be compiled with flash encryption support enabled. In make menuconfig, navigate to "Security Features" and select "Yes" for "Enable flash encryption on boot".

how is this possible in Arduino IDE ?