CURLOPT_SSLKEY_BLOB(3)

1CURLOPT_SSLKEY_BLOB(3)              libcurl             CURLOPT_SSLKEY_BLOB(3)
2
3
4

NAME

6       CURLOPT_SSLKEY_BLOB - private key for client cert from memory blob
7

SYNOPSIS

9       #include <curl/curl.h>
10
11       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLKEY_BLOB,
12                                 struct curl_blob *blob);
13

DESCRIPTION

15       Pass  a  pointer  to  a curl_blob structure, which contains information
16       (pointer and size) for a private key. Compatible with OpenSSL. The for‐
17       mat (like "PEM") must be specified with CURLOPT_SSLKEYTYPE(3).
18
19       If  the  blob  is initialized with the flags member of struct curl_blob
20       set to CURL_BLOB_COPY, the application does not have to keep the buffer
21       around after setting this.
22
23       This  option  is  an alternative to CURLOPT_SSLKEY(3) which instead ex‐
24       pects a file name as input.
25

DEFAULT

27       NULL
28

PROTOCOLS

30       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
31

EXAMPLE

33       CURL *curl = curl_easy_init();
34       if(curl) {
35         struct curl_blob blob;
36         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
37         blob.data = certificateData;
38         blob.len = filesize;
39         blob.flags = CURL_BLOB_COPY;
40         curl_easy_setopt(curl, CURLOPT_SSLCERT_BLOB, &blob);
41         curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "PEM");
42
43         blob.data = privateKeyData;
44         blob.len = privateKeySize;
45         curl_easy_setopt(curl, CURLOPT_SSLKEY_BLOB, &blob);
46         curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
47         curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, "PEM");
48         ret = curl_easy_perform(curl);
49         curl_easy_cleanup(curl);
50       }
51

AVAILABILITY

53       Added in 7.71.0. This option is supported by the OpenSSL backends.
54

RETURN VALUE

56       Returns CURLE_OK  if  TLS  enabled,  CURLE_UNKNOWN_OPTION  if  not,  or
57       CURLE_OUT_OF_MEMORY if there was insufficient heap space.
58