Comments on: ESP32: ESP-NOW Encrypted Messages

By: Arrtt

Arrtt — Tue, 06 Aug 2024 11:37:04 +0000

How to add peer about many to one with encrypted?

By: utta,

utta, — Sat, 01 Jun 2024 02:31:52 +0000

In reply to Theo.

Pls Send receiver Code send me my e mail id – uttamkholiya@gmail.com

By: Harry

Harry — Mon, 20 May 2024 08:17:21 +0000

Sender authentication still seems to be an issue, and Espressif did not fix this issue by now (ESP-IDF 5.2.1). Senders can easily set their MAC addresses and thus spoof messages without knowing PMK or LMK. For security critical applications, users need to use authentication on the application level, for example by using a shared key to create an HMAC, and include it in the payload. The disadvantage is that this will create more latency if that is a concern.

By: Paquito Dy

Paquito Dy — Thu, 22 Feb 2024 03:01:20 +0000

In reply to Sara Santos. Hi, I hope you can feature in your future video about code protecting ESP-32 in Arduino IDE. Setting fuses, but how ? Thanks for your excellent tutorials. Been enjoying & learning. Cheers from the Philippines.

By: zygfryd

zygfryd — Tue, 19 Dec 2023 10:53:38 +0000

important to remember: when encryption used, only 6 peers as per Espressif documentation:
“If unicast packets are used, up to 20 devices can be paired and controlled at the same time. If ESP-NOW encrypted mode is used, up to 6 devices can be paired and controlled at the same time.”

By: Sara Santos

Sara Santos — Fri, 17 Nov 2023 09:44:08 +0000

In reply to JO.

Hi.
Please read the following section on the tutorial:
“Create the PMK and LMK keys for this device on the following lines. It can be made of numbers and letters and the keys are 16 bytes (you can search online for “online byte counter” to check the length of your keys).”

Regards,
Sara

By: JO

JO — Thu, 16 Nov 2023 07:53:09 +0000

Thank you for tutorial.

Could you please explain how to generate keys for encryption.

Many thanks

By: Theo

Theo — Fri, 04 Aug 2023 23:18:07 +0000

Your receiver code game me the following error:
E (128) ESPNOW: Peer interface is invalid
Failed to add peer

I solved this by moving the line:
esp_now_peer_info_t peerInfo;
from inside the Setup() function to outside of it.

By: Gerald Lee Harris Jr

Gerald Lee Harris Jr — Mon, 03 Jul 2023 01:22:39 +0000

In reply to Sara Santos. Hi, I love your tutorials but i cant find one on how to enable encryption between the esp-32 and esp8266. Can you point me to an example?

By: Sara Santos

Sara Santos — Wed, 21 Jun 2023 09:43:19 +0000

In reply to Drake.

Hi.
Are you specifying the MAC address of the peer?
Regards,
Sara