ESP32 Forum

Hello.

I'm looking for source code of functions from esp_wifi_internal.h header file. Is there any way to get source code of this functions?

Thanks,
Michał

No, sorry. While we're actively working on opening code from our WiFi driver, the functions in this file aren't open at this moment. Can I ask what reason you have to need this source code?

Thank you for reply. I want to know whole process of encryption and i also want to obtain aes key which is use for this encryption. Then i want to use this informations to generate and encrypt my own packets and send it using ieee80211_freedom_output() or esp_wifi_80211_tx() functions.

I found some functions for encryption and tried to find out which is called while UDP/TCP packet building process but without success. Can you tell me if encryption of this packets is also in internal function or in open source function is esp-idf. If it is open source, can you help me to find this function in esp-idf files?

What do you mean? If you mean general TLS etc, that is open-source (see the mbedtls component). If you mean the AES encryption that's going on in WPA/WPA2/..., I think that's done in hardware. The setup for this is done in wpa_supplicant, however, and that should be open-source in the latest master.

Yes, i found this functions in wpa_supplicant. I put some printf() commands in this functions to find out which function is called while transmitting, but surprisingly anyone was called, so i think that encryption is done in esp_wifi_internal_tx(). I also found encryption funbctions is esp32/hwcrypto and try same tests with same results. I also need encryption key, which is establish while connecting to router. I don't know where esp32 save this key.

In conclusion I need to know whole process of encryption and frame building from esp_wifi_internal_tx() to do it on my own.