ESP32 Elliptic curve cryptography with micro-ecc, aes, sha example

[pcbreflux]

Sample using Elliptic curve cryptography with micro-ecc and ESP32 hardware enabled cryptography aes (256 bits, Counter Mode (CTR)) and sha (SHA-256) hash:

https://github.com/pcbreflux/espressif/ ... _micro-ecc

[DL88AI88]

Hi pcbreflux,

this is really cool.
Please, more of those examples.

Something like reading from an uart (e.g. rfid rdm6300 keys) and sending it as encrypted mqtt messages via wifi to a mosqitto server.

Keep on publishing.

Best regards.

DL88AI88

[pcbreflux]

Hi DL88AI88,

thanks. Coincidentally i published a new secure MQTT example on github yesterday.
With MQTT via SSL/TLS (also hardware encrypted) and Websocket -> testing my secured mosquitto servers on UBUNTU and Raspberian.

-> Part of my /etc/mosquitto/mosquitto.conf

Code: Select all

listener 9883
protocol websockets
cafile /etc/mosquitto/certs/ca.crt
certfile /etc/mosquitto/certs/server.crt
keyfile /etc/mosquitto/certs/server.key

ESP32 example:
https://github.com/pcbreflux/espressif/ ... mqtts_gpio

Code: Select all

I (50036) MQTTS: MQTTClientInit  ESP32MQTTE2F9A905
I (50036) MQTTS: MQTTConnect  ...
I (50256) MQTTS: MQTTSubscribe  ...
I (50456) MQTTS: MQTTYield  ...
I (104616) MQTTS: Topic received!: esp32/bulb1/1 32
I (104616) MQTTS: setLED!: 18 1 32 1 13
I (134726) MQTTS: Topic received!: esp32/bulb1/4 40
I (134726) MQTTS: setLED!: 22 4 40 4 13
I (149196) MQTTS: Topic received!: esp32/bulb1/5 40
I (149196) MQTTS: setLED!: 22 4 40 5 13
I (160276) MQTTS: Topic received!: esp32/bulb1/7 40
I (160276) MQTTS: setLED!: 22 4 40 7 13
I (172156) MQTTS: Topic received!: esp32/bulb1/7 100
I (172156) MQTTS: setLED!: 22 4 100 7 13
I (180026) MQTTS: Topic received!: esp32/bulb1/0 100
I (180026) MQTTS: setLED!: 5 0 100 0 13
I (189086) MQTTS: Topic received!: esp32/bulb1/0 140
I (189086) MQTTS: setLED!: 5 0 140 0 13

But i will try an example with "secure" bluetooth in the future.

[sukeshak]

Is this similar to STSAFE-A100 but without the dedicated hardware IC?
https://www.st.com/en/secure-mcus/stsafe-a100.html

I am looking to add STSAFE-A100 module for my device for Unique deviceID, authentication, TLS and also for saving credentials. The device would be connected and managed by Microsoft Azure including OTA.