1. When setting compilier into -O2 optimization, build for classic bt demo will get wrong
2. Fix a memcpy bug that maybe get memory truncated
Closes https://github.com/espressif/esp-idf/issues/9398
Prevent a remote device from doing a Bluetooth Impersonation Attack
(BIAS) by:
- Preventing remote device to downgrade secure connection
feature mask. Secure connection feature mask should remain same or
increase to enabled in link key generation and authentication.
- Doing a mutual authentication during Legacy Authentication.
Signed-off-by: Chinmay Chhajed <chinmay.chhajed@espressif.com>
