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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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6
src/tool_getparam.c
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@ -215,6 +215,7 @@ static const struct LongShort aliases[]= {
{"Em", "tlsauthtype", TRUE},
{"En", "ssl-allow-beast", FALSE},
{"Eo", "login-options", TRUE},
{"Ep", "pinnedpubkey", TRUE},
{"f", "fail", FALSE},
{"F", "form", TRUE},
{"Fs", "form-string", TRUE},
@ -1353,6 +1354,11 @@ ParameterError getparameter(char *flag, /* f or -long-flag */
GetStr(&config->login_options, nextarg);
break;
case 'p': /* Pinned public key DER file */
/* Pinned public key DER file */
GetStr(&config->pinnedpubkey, nextarg);
break;
default: /* certificate file */
{
char *certname, *passphrase;