curl / libcurl / API / curl_easy_setopt / CURLOPT_KEYPASSWD

CURLOPT_KEYPASSWD explained

Name

CURLOPT_KEYPASSWD - passphrase to private key

Synopsis

#include <curl/curl.h>
 
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_KEYPASSWD, char *pwd);

Description

Pass a pointer to a null-terminated string as parameter. It is used as the password required to use the CURLOPT_SSLKEY or CURLOPT_SSH_PRIVATE_KEYFILE private key. You never need a pass phrase 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

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/foo.bin");
  curl_easy_setopt(curl, CURLOPT_SSLCERT, "client.pem");
  curl_easy_setopt(curl, CURLOPT_SSLKEY, "key.pem");
  curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "superman");
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}

Availability

This option was known as CURLOPT_SSLKEYPASSWD up to 7.16.4 and CURLOPT_SSLCERTPASSWD up to 7.9.2.

Return value

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