CURLOPT_SSLCERT_BLOB(3) curl_easy_setopt options CURLOPT_SSLCERT_BLOB(3)
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 Trans-
port or Schannel. The format must be "P12" or "PEM" on OpenSSL. The
string "P12" or "PEM" 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 ex-
pects a file name as input.
DEFAULT
NULL
PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
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");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
AVAILABILITY
Added in 7.71.0. This option is supported by the OpenSSL, Secure Trans-
port and Schannel 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_SSLCERTTYPE(3), CURLOPT_SSLKEY(3),
libcurl 7.81.0 November 26, 2021 CURLOPT_SSLCERT_BLOB(3)
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