Hi,

I am a novice libcurl user. I have written a simple c program using libcurl
to access an https URL.
What are the ssl crypto engines supported by CURL ?
I have generated ca,server and client certificates using openssl. Does it
mean i should use openssl crypto engine. ?
I want to use openssl crypto engine. What string value I should use for the
option CURLOPT_SSLENGINE to use openssl as ssl engine ?
My Program is as below

int main(int argc, char **argv)
{
    CURL *curl;
    CURLcode res;
    FILE *headerfile;
    const char *pPassphrase = NULL;
    struct curl_slist *list;
    static const char *pCertFile = "testcert.pem";
    static const char *pCACertFile="ca.pem";

    const char *pKeyName;
    const char *pKeyType;
    char name[60];
    const char *pEngine;

    pKeyName = "testkey.pem";
    pKeyType = "PEM";
    pEngine = "openssl"; /* What should I set here. If
set to openssl it says can't set crypto engine. */

    headerfile = fopen("dumpit", "w");

    curl_global_init(CURL_GLOBAL_DEFAULT);

    curl = curl_easy_init();
    if(curl) {
      /* what call to write: */
     curl_easy_setopt(curl, CURLOPT_URL, "https://www.myserver.com");
     curl_easy_setopt(curl, CURLOPT_WRITEHEADER, headerfile);

     while(1) /* do some ugly short cut... */
      {
        if (pEngine) /* use crypto engine */
        {

        //what is sslengine which engines can we use
          if (curl_easy_setopt(curl, CURLOPT_SSLENGINE,pEngine) != CURLE_OK)
          { /* load the crypto engine */
            fprintf(stderr,"can't set crypto engine\n");
            break;
          }
        // what is default ssl engine ?
          if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT,1) !=
CURLE_OK)
          { /* set the crypto engine as default */
            /* only needed for the first time you load
               a engine in a curl object... */
            fprintf(stderr,"can't set crypto engine as default\n");
            break;
          }
        }
 }

If i do use command curl --engine list , it shows "dynamic" in result. Even
If I set pEngine to "dynamic", it says cant load crypto engine
Please help.

Thanks,

Parag
Received on 2007-07-24