NAME

       CURLOPT_SSLKEY_BLOB - private key for client cert from memory blob

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLKEY_BLOB,
                                 struct curl_blob *blob);

DESCRIPTION

       Pass a pointer to a curl_blob structure, which contains information (pointer and size) for
       a private key. Compatible with OpenSSL. The format (like "PEM")  must  be  specified  with
       CURLOPT_SSLKEYTYPE(3).

       If   the   blob  is  initialized  with  the  flags  member  of  struct  curl_blob  set  to
       CURL_BLOB_COPY, the application does not have to keep  the  buffer  around  after  setting
       this.

       This  option  is  an alternative to CURLOPT_SSLKEY(3) which instead expects a file name as
       input.

DEFAULT

       NULL

PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE

       extern char *certificateData; /* point to cert */
       extern size_t filesize; /* size of cert */

       extern char *privateKeyData; /* point to key */
       extern size_t privateKeySize; /* size of key */

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           struct curl_blob blob;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
           blob.data = certificateData;
           blob.len = filesize;
           blob.flags = CURL_BLOB_COPY;
           curl_easy_setopt(curl, CURLOPT_SSLCERT_BLOB, &blob);
           curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "PEM");

           blob.data = privateKeyData;
           blob.len = privateKeySize;
           curl_easy_setopt(curl, CURLOPT_SSLKEY_BLOB, &blob);
           curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
           curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, "PEM");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in 7.71.0. This option is supported by the OpenSSL backends.

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_SSLKEYTYPE(3), CURLOPT_SSLKEY(3)