c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Title: CURLOPT_SSLCERT_BLOB Section: 3 Source: libcurl See-also:

CURLOPT_KEYPASSWD (3)
CURLOPT_SSLCERTTYPE (3)
CURLOPT_SSLKEY (3) Protocol:
TLS TLS-backend:
OpenSSL
Secure Transport
Schannel
mbedTLS ---

NAME

CURLOPT_SSLCERT_BLOB - SSL client certificate from memory blob

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLCERT_BLOB,
                          struct curl_blob *stblob);

DESCRIPTION

Pass a pointer to a curl_blob structure, which contains (pointer and size) a client certificate. The format must be "P12" on Secure Transport or Schannel. The format must be "P12" or "PEM" on OpenSSL. The format must be "DER" or "PEM" on mbedTLS. The format must be specified with CURLOPT_SSLCERTTYPE(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_SSLCERT(3) which instead expects a filename as input.

DEFAULT

NULL

EXAMPLE


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

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    struct curl_blob stblob;
    stblob.data = certificateData;
    stblob.len = filesize;
    stblob.flags = CURL_BLOB_COPY;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_SSLCERT_BLOB, &stblob);
    curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "P12");
    curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

AVAILABILITY

Added in 7.71.0. This option is supported by the OpenSSL, Secure Transport, Schannel and mbedTLS (since 7.78.0) 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.

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