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SSL: implement public key pinning

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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
This commit is contained in:
moparisthebest 2014-09-30 22:31:17 -04:00 • committed by Daniel Stenberg
parent d1b56d0043
commit 93e450793c
20 changed files with 311 additions and 2 deletions
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3
src/tool_operate.c
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@ -1025,6 +1025,9 @@ static CURLcode operate_do(struct GlobalConfig *global,
if(config->crlfile)
my_setopt_str(curl, CURLOPT_CRLFILE, config->crlfile);
if(config->pinnedpubkey)
my_setopt_str(curl, CURLOPT_PINNEDPUBLICKEY, config->pinnedpubkey);
if(curlinfo->features & CURL_VERSION_SSL) {
if(config->insecure_ok) {
my_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);