diff options
| author | moparisthebest <admin@moparisthebest.com> | 2014-09-30 22:31:17 -0400 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2014-10-07 14:44:19 +0200 |
| commit | 93e450793ce289925dfd1d5e3b2d14e781f8dfd4 (patch) | |
| tree | 3ceea898922e067a4a692204f6388ab633deebef /docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3 | |
| parent | d1b56d00439ab26d7fc43e37ab18ae331ddc400d (diff) | |
SSL: implement public key pinning
Option --pinnedpubkey takes a path to a public key in DER format and
only connect if it matches (currently only implemented with OpenSSL).
Provides CURLOPT_PINNEDPUBLICKEY for curl_easy_setopt().
Extract a public RSA key from a website like so:
openssl s_client -connect google.com:443 2>&1 < /dev/null | \
sed -n '/-----BEGIN/,/-----END/p' | openssl x509 -noout -pubkey \
| openssl rsa -pubin -outform DER > google.com.der
Diffstat (limited to 'docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3')
| -rw-r--r-- | docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3 b/docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3 new file mode 100644 index 000000000..a47806582 --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_PINNEDPUBLICKEY.3 @@ -0,0 +1,51 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. +.\" * +.\" * This software is licensed as described in the file COPYING, which +.\" * you should have received as part of this distribution. The terms +.\" * are also available at http://curl.haxx.se/docs/copyright.html. +.\" * +.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell +.\" * copies of the Software, and permit persons to whom the Software is +.\" * furnished to do so, under the terms of the COPYING file. +.\" * +.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +.\" * KIND, either express or implied. +.\" * +.\" ************************************************************************** +.\" +.TH CURLOPT_PINNEDPUBLICKEY 3 "27 Aug 2014" "libcurl 7.38.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_PINNEDPUBLICKEY \- set pinned public key +.SH SYNOPSIS +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PINNEDPUBLICKEY, char *pinnedpubkey); +.SH DESCRIPTION +Pass a pointer to a zero terminated string as parameter. The string should be +the file name of your pinned public key. The format expected is "DER". + +When negotiating a TLS or SSL connection, the server sends a certificate +indicating its identity. A public key is extracted from this certificate +and if it does not exactly match the public key provided to this option, +curl will abort the connection before sending or receiving any data. + +This is currently only implemented in the OpenSSL backend, with more backends +expected to follow shortly. +.SH DEFAULT +NULL +.SH PROTOCOLS +All TLS based protocols: HTTPS, FTPS, IMAPS, POP3, SMTPS etc. +.SH EXAMPLE +TODO +.SH AVAILABILITY +If built TLS enabled. +.SH RETURN VALUE +Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not, or +CURLE_OUT_OF_MEMORY if there was insufficient heap space. |