1CURLOPT_SSLCERT(3) curl_easy_setopt options CURLOPT_SSLCERT(3)
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6 CURLOPT_SSLCERT - set SSL client certificate
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLCERT, char *cert);
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14 Pass a pointer to a zero terminated string as parameter. The string
15 should be the file name of your client certificate. The default format
16 is "P12" on Secure Transport and "PEM" on other engines, and can be
17 changed with CURLOPT_SSLCERTTYPE(3).
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19 With NSS or Secure Transport, this can also be the nickname of the cer‐
20 tificate you wish to authenticate with as it is named in the security
21 database. If you want to use a file from the current directory, please
22 precede it with "./" prefix, in order to avoid confusion with a nick‐
23 name.
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25 (Schannel only) Client certificates must be specified by a path expres‐
26 sion to a certificate store. (Loading PFX is not supported; you can
27 import it to a store first). You can use "<store location>\<store
28 name>\<thumbprint>" to refer to a certificate in the system certifi‐
29 cates store, for example, "Curren‐
30 tUser\MY\934a7ac6f8a5d579285a74fa61e19f23ddfe8d7a". Thumbprint is usu‐
31 ally a SHA-1 hex string which you can see in certificate details. Fol‐
32 lowing store locations are supported: CurrentUser, LocalMachine, Cur‐
33 rentService, Services, CurrentUserGroupPolicy, LocalMachineGroupPolicy,
34 LocalMachineEnterprise.
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36 When using a client certificate, you most likely also need to provide a
37 private key with CURLOPT_SSLKEY(3).
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39 The application does not have to keep the string around after setting
40 this option.
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43 NULL
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46 All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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49 CURL *curl = curl_easy_init();
50 if(curl) {
51 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
52 curl_easy_setopt(curl, CURLOPT_SSLCERT, "client.pem");
53 curl_easy_setopt(curl, CURLOPT_SSLKEY, "key.pem");
54 curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "s3cret");
55 ret = curl_easy_perform(curl);
56 curl_easy_cleanup(curl);
57 }
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60 If built TLS enabled.
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63 Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not, or
64 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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67 CURLOPT_SSLCERTTYPE(3), CURLOPT_SSLKEY(3),
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71libcurl 7.69.1 January 29, 2019 CURLOPT_SSLCERT(3)