Welcome to Alex Snast as #curl commit author 1280: github.com/curl/curl/pull/1400…
wolfssl: assume key_file equal to clientcert in the absence of key_file by alexsn · Pull Request #14008 · curl/curl
When user sets CURLOPT_SSLCERT but leaves CURLOPT_SSLKEY unset assume the path passed in CURLOPT_SSLCERT holds the ssl key which is what we do in openssl implementation. Closed #14007GitHub