mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 08:08:50 -05:00
36 lines
1.7 KiB
Plaintext
36 lines
1.7 KiB
Plaintext
Peer SSL Certificate Verification
|
|
=================================
|
|
|
|
Starting in 7.10, libcurl performs peer SSL certificate verification by
|
|
default. This is done by installing a default CA cert bundle on 'make install'
|
|
(or similar), that CA bundle package is used by default on operations against
|
|
SSL servers.
|
|
|
|
Alas, if you communicate with HTTPS servers using certifcates that are signed
|
|
by CAs present in the bundle, you will not notice any changed behavior and you
|
|
will seeminglessly get a higher security level on your SSL connections since
|
|
can be sure that the remote server really is the one it claims to be.
|
|
|
|
If the remote server uses a self-signed certificate, or if you don't install
|
|
curl's CA cert bundle or if it uses a certificate signed by a CA that isn't
|
|
included in the bundle, then you need to do one of the following:
|
|
|
|
1. Tell libcurl to *not* verify the peer. With libcurl you disable with with
|
|
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE);
|
|
|
|
With the curl command tool, you disable this with -k/--insecure.
|
|
|
|
2. Get a CA certificate that can verify the remote server and use the proper
|
|
option to point out this CA cert for verification when connecting. For
|
|
libcurl hackers: curl_easy_setopt(curl, CURLOPT_CAPATH, capath);
|
|
|
|
With the curl command tool: --cacert [file]
|
|
|
|
This upgrade procedure has been deemed The Right Thing even though it adds
|
|
this extra trouble for some users, since it adds security to a majority of the
|
|
SSL connections that previously weren't really secure.
|
|
|
|
It turned out many people were using previous versions of curl/libcurl without
|
|
realizing the need for the CA cert options to get truly secure SSL
|
|
connections.
|