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08a3e8e19a
These libraries do not support TLS 1.3 and have been marked for removal for over a year. We want to help users select a TLS dependency that is future-proof and reliable, and not supporting TLS 1.3 in 2025 does not infer confidence. Users who build libcurl are likely to be served better and get something more future-proof with a TLS library that supports 1.3. Closes #16677
87 lines
1.9 KiB
Markdown
87 lines
1.9 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_SSLCERT_BLOB
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_KEYPASSWD (3)
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- CURLOPT_SSLCERTTYPE (3)
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- CURLOPT_SSLKEY (3)
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Protocol:
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- TLS
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TLS-backend:
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- OpenSSL
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- Schannel
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- mbedTLS
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- wolfSSL
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Added-in: 7.71.0
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---
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# NAME
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CURLOPT_SSLCERT_BLOB - SSL client certificate from memory blob
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLCERT_BLOB,
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struct curl_blob *stblob);
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~~~
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# DESCRIPTION
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Pass a pointer to a curl_blob structure, which contains (pointer and size) a
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client certificate. The format must be "P12" on Schannel. The format must be
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"P12" or "PEM" on OpenSSL. The format must be "DER" or "PEM" on mbedTLS. The
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format must be specified with CURLOPT_SSLCERTTYPE(3).
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If the blob is initialized with the flags member of struct curl_blob set to
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CURL_BLOB_COPY, the application does not have to keep the buffer around after
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setting this.
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This option is an alternative to CURLOPT_SSLCERT(3) which instead
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expects a filename as input.
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# DEFAULT
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NULL
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# %PROTOCOLS%
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# EXAMPLE
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~~~c
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extern char *certificateData; /* point to data */
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extern size_t filesize; /* size of data */
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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struct curl_blob stblob;
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stblob.data = certificateData;
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stblob.len = filesize;
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stblob.flags = CURL_BLOB_COPY;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_SSLCERT_BLOB, &stblob);
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curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "P12");
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curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# %AVAILABILITY%
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# RETURN VALUE
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curl_easy_setopt(3) returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
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libcurl-errors(3).
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