CURLOPT_PROXY_SSLKEY_BLOB(3)                          Library Functions Manual

NAME
       CURLOPT_PROXY_SSLKEY_BLOB - private key for proxy cert from memory blob

SYNOPSIS
       #include <curl/curl.h>

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

DESCRIPTION
       Pass a pointer to a curl_blob structure that contains information
       (pointer and size) about the private key for connecting to the HTTPS
       proxy. Compatible with OpenSSL. The format (like "PEM") must be
       specified with CURLOPT_PROXY_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.

DEFAULT
       NULL

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

       This option works only with the following TLS backends: OpenSSL

EXAMPLE

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

       extern char *privateKeyData; /* point to data */
       extern size_t privateKeySize; /* size */

       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/");
           curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy");
           blob.data = certificateData;
           blob.len = filesize;
           blob.flags = CURL_BLOB_COPY;
           curl_easy_setopt(curl, CURLOPT_PROXY_SSLCERT_BLOB, &blob);
           curl_easy_setopt(curl, CURLOPT_PROXY_SSLCERTTYPE, "PEM");

           blob.data = privateKeyData;
           blob.len = privateKeySize;
           curl_easy_setopt(curl, CURLOPT_PROXY_SSLKEY_BLOB, &blob);
           curl_easy_setopt(curl, CURLOPT_PROXY_KEYPASSWD, "s3cret");
           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_SSLKEY(3), CURLOPT_SSLKEYTYPE(3), CURLOPT_SSLKEY_BLOB(3)

libcurl                          April 26 2024    CURLOPT_PROXY_SSLKEY_BLOB(3)