Comments on: ESP32 HTTPS Requests (Arduino IDE)

By: Dave Evans

Dave Evans — Mon, 10 Feb 2025 06:44:17 +0000

Your example “ESP32 HTTPS Requests without Certificate” won’t compile without me adding
#include

By: Rob Latour

Rob Latour — Thu, 23 Jan 2025 15:20:01 +0000

In reply to Kan Deng. :-)

By: Kan Deng

Kan Deng — Thu, 23 Jan 2025 12:05:14 +0000

In reply to Rob Latour.

O, yes, yes,

I should use the root certificate in the chain.

And I manually download the root certificate in my Chrome browser, it works!

A lot of thanks!
Kan

By: Sara Santos

Sara Santos — Thu, 23 Jan 2025 10:48:04 +0000

In reply to Rob Latour.

Hi.
Thanks for sharing.
Regards,
Sara

By: Rob Latour

Rob Latour — Wed, 22 Jan 2025 00:54:24 +0000

sorry typo above ” you need to use the third certificate in the change.” should be ” you need to use the third certificate in the chain.”

By: Rob Latour

Rob Latour — Wed, 22 Jan 2025 00:52:49 +0000

Kan Deng … you need to use the third certificate in the change. Take a look at the post above, and try out the certifiable program with the following command string:

certifiable howsmyssl.com

and you will see three certificates listed.

To get the one you need, and to have it converted for use in an Arduino program, you can use:

certifiable howsmyssl.com -n 3 -c
which will copy the results into your clipboard.

Alternatively, you can use:
certifiable howsmyssl.com -n 3 -g c++ progmem -c

By: Rob Latour

Rob Latour — Tue, 21 Jan 2025 23:37:50 +0000

Thanks for all the great work you do with randomnerdtutorials , I’ve been visiting for years.

In any case, I recently released an open source program that runs as a Windows command line utility to automatically generate the needed Arduino / C++ code for a website’s SSL certificate. Basically all you need to specify is the website name in the command line along with some additional arguments.

For more information, please see:
github.com/roblatour/certifiable

By: Kan Deng

Kan Deng — Mon, 13 Jan 2025 08:02:54 +0000

This is a great tutorial, explaining a complex topic in simple terms.

Following the steps described in this tutorial, we manually downloaded the certificate from https://www.howsmyssl.com/, using Chrome browser, the content is attached at the end of this message.

Notice that the content of the certificate we downloaded is different from the the content in this tutorial.

Then we tried the sample code in ESP32, the certificate of the tutorial works fine for the https client, and the one that we downloaded doesn’t work. The error message is following,

[ssl_starttls_handshake():313]: (-9984) X509 - Certificate verification failed, e.g. CRL, CA or signature check failed

Any suggestion what goes wrong?

Many thanks,
Kan

By: Mukarram

Mukarram — Thu, 13 Jun 2024 13:13:02 +0000

Are there plans to release a full HTTPS GET and POST tutorial just like the HTTP GET and POST tutorial published earlier?

By: Mukarram

Mukarram — Wed, 12 Jun 2024 13:56:05 +0000

Thank you very much for this tutorial, it has been very helpful. Were you or anybody else able to figure out how to work with certificate bundles by any chance?