SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_PRIVATE_KEYFILE,
char *filename);
DESCRIPTION
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).