CURLOPT_SSH_PRIVATE_KEYFILE - private key file for SSH auth
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_PRIVATE_KEYFILE,
char *filename);
Pass a char * pointing to a filename for your private key. If not used,
libcurl defaults to $HOME/.ssh/id_dsa if the HOME environment variable
is set, and just "id_dsa" in the current directory if HOME is not
set.
If the file is password-protected, set the password with
CURLOPT_KEYPASSWD(3).
The application does not have to keep the string around after
setting this option.
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/file");
curl_easy_setopt(curl, CURLOPT_SSH_PRIVATE_KEYFILE,
"/home/clarkkent/.ssh/id_rsa");
curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "password");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
CURLOPT_SSH_PUBLIC_KEYFILE(3), CURLOPT_SSH_AUTH_TYPES(3),