curl/docs/cmdline-opts/pinnedpubkey.d
Daniel Stenberg 78d6232f1f
gskit: remove
We remove support for building curl with gskit.

 - This is a niche TLS library, only running on some IBM systems
 - no regular curl contributors use this backend
 - no CI builds use or verify this backend
 - gskit, or the curl adaption for it, lacks many modern TLS features
   making it an inferior solution
 - build breakages in this code take weeks or more to get detected
 - fixing gskit code is mostly done "flying blind"

This removal has been advertized in DEPRECATED in Jan 2, 2023 and it has
been mentioned on the curl-library mailing list.

It could be brought back, this is not a ban. Given proper effort and
will, gskit support is welcome back into the curl TLS backend family.

Closes #11460
2023-08-07 20:57:48 +02:00

39 lines
1.1 KiB
Makefile

c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: pinnedpubkey
Arg: <hashes>
Help: FILE/HASHES Public key to verify peer against
Protocols: TLS
Category: tls
Example: --pinnedpubkey keyfile $URL
Example: --pinnedpubkey 'sha256//ce118b51897f4452dc' $URL
Added: 7.39.0
See-also: hostpubsha256
Multi: single
---
Tells curl to use the specified public key file (or hashes) to verify the
peer. This can be a path to a file which contains a single public key in PEM
or DER format, or any number of base64 encoded sha256 hashes preceded by
'sha256//' and separated by ';'.
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.
PEM/DER support:
7.39.0: OpenSSL and GnuTLS
7.43.0: wolfSSL
7.47.0: mbedTLS
sha256 support:
7.44.0: OpenSSL, GnuTLS and wolfSSL
7.47.0: mbedTLS
Other SSL backends not supported.