CURLOPT_SSLKEYTYPE - set type of the private key file
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLKEYTYPE, char *type);
Pass a pointer to a zero terminated string as parameter. The string should be
the format of your private key. Supported formats are "PEM",
"DER" and "ENG".
The format "ENG" enables you to load the private key from a crypto
engine. In this case CURLOPT_SSLKEY(3)
is used as an identifier passed
to the engine. You have to set the crypto engine with
. "DER" format key file currently does
not work because of a bug in OpenSSL.
The application does not have to keep the string around after setting this
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
curl_easy_setopt(curl, CURLOPT_SSLCERT, "client.pem");
curl_easy_setopt(curl, CURLOPT_SSLKEY, "key.pem");
curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, "PEM");
curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
ret = curl_easy_perform(curl);
If built TLS enabled.
Returns CURLE_OK if TLS is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.