CURLOPT_SSLKEYTYPE(3)      curl_easy_setopt options      CURLOPT_SSLKEYTYPE(3)

NAME
       CURLOPT_SSLKEYTYPE - set type of the private key file

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLKEYTYPE, char
       *type);

DESCRIPTION
       Pass a pointer to a null-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 _SSLKEY&section=3">CURLOPT_SSLKEY(3) is used as an identifier passed
       to the engine. You have to set the crypto engine with
       _SSLENGINE&section=3">CURLOPT_SSLENGINE(3).  "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 option.

DEFAULT
       "PEM"

PROTOCOLS
       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         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);
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       If built TLS enabled.

RETURN VALUE
       Returns CURLE_OK if TLS is supported, CURLE_UNKNOWN_OPTION if not, or
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO
       CURLOPT_SSLKEY(3), CURLOPT_SSLCERT(3),

libcurl 7.77.0                 November 4, 2020          CURLOPT_SSLKEYTYPE(3)