undefined method `hkdf' for OpenSSL::KDF:Module (NoMethodError)

[mohamedhafez]

When trying to use https://github.com/pushpad/web-push, I get the following error:

undefined method `hkdf' for OpenSSL::KDF:Module (NoMethodError)

At this line: https://github.com/pushpad/web-push/blob/537267741b8b8cdd4ecedeb3f2da82e1145566d8/lib/web_push/encryption.rb#L29

(there's no stack trace past that)

I'm guessing its just an Openssl 3.x feature that hasn't been implemented yet? Just documenting here, I can always fall back on a previous gem version so not urgent