1--- 2c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLOPT_SSLCERT_BLOB 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_KEYPASSWD (3) 9 - CURLOPT_SSLCERTTYPE (3) 10 - CURLOPT_SSLKEY (3) 11--- 12 13# NAME 14 15CURLOPT_SSLCERT_BLOB - SSL client certificate from memory blob 16 17# SYNOPSIS 18 19~~~c 20#include <curl/curl.h> 21 22CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLCERT_BLOB, 23 struct curl_blob *stblob); 24~~~ 25 26# DESCRIPTION 27 28Pass a pointer to a curl_blob structure, which contains (pointer and size) a 29client certificate. The format must be "P12" on Secure Transport or 30Schannel. The format must be "P12" or "PEM" on OpenSSL. The format must be 31"DER" or "PEM" on mbedTLS. The format must be specified with 32CURLOPT_SSLCERTTYPE(3). 33 34If the blob is initialized with the flags member of struct curl_blob set to 35CURL_BLOB_COPY, the application does not have to keep the buffer around after 36setting this. 37 38This option is an alternative to CURLOPT_SSLCERT(3) which instead 39expects a filename as input. 40 41# DEFAULT 42 43NULL 44 45# PROTOCOLS 46 47All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc. 48 49# EXAMPLE 50 51~~~c 52 53extern char *certificateData; /* point to data */ 54extern size_t filesize; /* size of data */ 55 56int main(void) 57{ 58 CURL *curl = curl_easy_init(); 59 if(curl) { 60 CURLcode res; 61 struct curl_blob stblob; 62 stblob.data = certificateData; 63 stblob.len = filesize; 64 stblob.flags = CURL_BLOB_COPY; 65 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); 66 curl_easy_setopt(curl, CURLOPT_SSLCERT_BLOB, &stblob); 67 curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "P12"); 68 curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret"); 69 res = curl_easy_perform(curl); 70 curl_easy_cleanup(curl); 71 } 72} 73~~~ 74 75# AVAILABILITY 76 77Added in 7.71.0. This option is supported by the OpenSSL, Secure Transport, 78Schannel and mbedTLS (since 7.78.0) backends. 79 80# RETURN VALUE 81 82Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not, or 83CURLE_OUT_OF_MEMORY if there was insufficient heap space. 84