NAME

       CURLOPT_PROXY_KEYPASSWD - passphrase for the proxy private key

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_KEYPASSWD, char *pwd);

DESCRIPTION

       This option is for connecting to an HTTPS proxy, not an HTTPS server.

       Pass  a  pointer  to  a  null-terminated  string  as parameter. It is used as the password
       required to use the CURLOPT_PROXY_SSLKEY(3) private key. You never need  a  passphrase  to
       load a certificate but you need one to load your private key.

       The application does not have to keep the string around after setting this option.

DEFAULT

       NULL

PROTOCOLS

       This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

       This  option  works  only  with the following TLS backends: OpenSSL, Schannel, mbedTLS and
       wolfSSL

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
           curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy:443");
           curl_easy_setopt(curl, CURLOPT_PROXY_KEYPASSWD, "superman");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.52.0

RETURN VALUE

       Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not,  or  CURLE_OUT_OF_MEMORY  if
       there was insufficient heap space.

SEE ALSO

       CURLOPT_KEYPASSWD(3),       CURLOPT_PROXY_SSLKEY(3),       CURLOPT_SSH_PRIVATE_KEYFILE(3),
       CURLOPT_SSLKEY(3)