Add certificate bundle capability to WiFiClientSecure #6106
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Enable usage of the ESP32 IDF's certificate bundle for WiFiClientSecure connections. Adds the ability to load a bundle or root certificates and use them for authenticating SSL servers. Based on work from Onno-Dirkzwager, Duckle29, kubo6472, meltdown03, kinafu and others. See also: - https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/esp_crt_bundle.html - espressif#3646 - libraries/WiFiClientSecure/README.md
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me-no-dev
reviewed
Jan 17, 2022
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Thanks @esp32wrangler :) Merged! |
Oozlum
added a commit
to Oozlum/WebSockets2_Generic
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Mar 24, 2022
WiFiClientSecure can now use a bundle of certificates to authenticate a server. See espressif/arduino-esp32#6106
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Summary
Enable usage of the ESP32 IDF's certificate bundle for WiFiClientSecure connections.
Adds the ability to load a bundle or root certificates and use them for authenticating SSL servers.
Intends to fulfill the feature request #3646
Impact
The changes impact only the WiFiClientSecure component. Unless the user invokes WiFiClientSecure::setCACertBundle, the behavior of WiFiClientSecure remains identical. If that function is called, and no CA certificate is provided to WiFiClientSecure, then the bundle will be used instead.
The actual certificate bundle parsing and authentication callback functionality is stable, proven ESP IDF code. Only the glue code that connects WiFiClientSecure to the bunde code is bespoke.
New code based on work from Onno-Dirkzwager, Duckle29, kubo6472, meltdown03, kinafu and others in issue 3646.
Related links
https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/esp_crt_bundle.html
libraries/WiFiClientSecure/README.md