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17 Commits

Author SHA1 Message Date
Jim Hague 8609a35e5b GnuTLS: Add support for TLS 1.3. 2019-01-15 11:31:22 +00:00
Jim Hague ccd6c3592d GnuTLS: Can't set priority for SSL3. 2019-01-15 11:30:56 +00:00
Jim Hague 3fe0c94357 Merge branch 'develop' into feature/abstract-tls 2019-01-14 19:09:20 +00:00
Jim Hague 65f4fbbc81 Make sure all connection deinits are only called if there is something to deinit. 2018-12-14 15:38:32 +00:00
Jim Hague c1bf12c8a2 Update default GnuTLS cipher suite priority string to one that gives the same ciphers as the OpenSSL version. 
Also fix deinit segfault.

./gnutls-ciphers "NONE:+AES-256-GCM:+AES-128-GCM:+CHACHA20-POLY1305:+ECDHE-RSA:+ECDHE-ECDSA:+SIGN-RSA-SHA384:+AEAD:+COMP-ALL:+VERS-TLS-ALL:+CURVE-ALL"
Cipher suites for NONE:+AES-256-GCM:+AES-128-GCM:+CHACHA20-POLY1305:+ECDHE-RSA:+ECDHE-ECDSA:+SIGN-RSA-SHA384:+AEAD:+COMP-ALL:+VERS-TLS-ALL:+CURVE-ALL
TLS_ECDHE_RSA_AES_256_GCM_SHA384                  	0xc0, 0x30 TLS1.2
TLS_ECDHE_RSA_AES_128_GCM_SHA256                  	0xc0, 0x2f TLS1.2
TLS_ECDHE_RSA_CHACHA20_POLY1305                   	0xcc, 0xa8 TLS1.2
TLS_ECDHE_ECDSA_AES_256_GCM_SHA384                0xc0, 0x2 TLS1.2
TLS_ECDHE_ECDSA_AES_128_GCM_SHA256                0xc0, 0x2b TLS1.2
TLS_ECDHE_ECDSA_CHACHA20_POLY1305                 0xcc, 0xa9 TLS1.2

$ openssl ciphers -v TLS13-AES-256-GCM-SHA384:TLS13-AES-128-GCM-SHA256:TLS13-CHACHA20-POLY1305-SHA256:EECDH+AESGCM:EECDH+CHACHA20
ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH     Au=RSA  Enc=AESGCM(256) Mac=AEAD
ECDHE-ECDSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH     Au=ECDSA Enc=AESGCM(256) Mac=AEAD
ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 Kx=ECDH     Au=RSA  Enc=AESGCM(128) Mac=AEAD
ECDHE-ECDSA-AES128-GCM-SHA256 TLSv1.2 Kx=ECDH     Au=ECDSA Enc=AESGCM(128) Mac=AEAD
ECDHE-ECDSA-CHACHA20-POLY1305 TLSv1.2 Kx=ECDH     Au=ECDSA Enc=ChaCha20-Poly1305 Mac=AEAD
ECDHE-RSA-CHACHA20-POLY1305 TLSv1.2 Kx=ECDH     Au=RSA  Enc=ChaCha20-Poly1305 Mac=AEAD
 2018-12-14 15:24:13 +00:00
Jim Hague a4590bafcb Implement reading CAs from file or dir. 
I found gnutls_certificate_set_x509_trust_(file|dir)(), so it's a lot
easier than I feared. Plus a little diggiing shows that if you're
loading the system defaults, GnuTLS on Windows does load them from the
Windows certificate store.
 2018-12-13 13:33:54 +00:00
Jim Hague e8f34d48fb Adjust default cipher list so required authentication works with getdnsapi. 
The previous default cipher string wouldn't connect with getdnsapi.
Selection of cipher strings requires some deep study, I think.

So, taking working with getdnsapi.net as our target, discover that we
need SECURE128 as well as SECURE192. And rather than disable everything
except TLS1.2, disable TLS1.0 and TLS1.1. This should mean it connects
to TLS1.3.
 2018-12-13 12:04:01 +00:00
Jim Hague fa9d8885f0 Fix problems with GnuTLS pinset handling. 
Pinset validation now seems to work.
 2018-12-13 11:03:31 +00:00
Jim Hague 45be26642b Fix dane query handling and verify error reporting. 
Verify error is flags, not values. And deiniting a dane_query that is
NULL segfaults.
 2018-12-12 15:01:07 +00:00
Jim Hague 35b4969216 Abstract out OpenSSL specific parts of getdns_pubkey_pin_create_from_string(). 
The only OpenSSL function is decoding Base64.
 2018-12-11 18:03:00 +00:00
Jim Hague 2c6ec5e0be Implement setting up pinset for DANE. Verification to come. 2018-12-11 14:59:21 +00:00
Jim Hague ff7ffc246c Rename TLS Interface DANE init to pinset init. That's what it's actually used for. 2018-12-11 12:46:05 +00:00
Jim Hague fee864c25c Implement setting cipher/curve lists. 
Set the priority string to a concatenation of the connection cipher and curve strings, falling back to the context ones if the connection value isn't specified. Also get context.c to specify NULL for default context list and the opportunistic list for the connection, moving these library-specific quantities into the specific implementation.
 2018-12-07 16:55:17 +00:00
Jim Hague 511dfc75ef Implement _getdns_tls_context_set_min_proto_1_2(). 
Add a flag to the context (so, it's actually got something useful there!) and check the connection version on a successful handshake.
This means we need to access the context from a connection, so add a pointer to the context to the connection.
 2018-12-07 11:11:33 +00:00
Jim Hague 64f0d6aaa8 Rename _getdns_tls_connection_verify() to _getdns_tls_connection_certificate_verify(). 
I managed to mislead myself about what it did, which suggests the name should be clearer.
 2018-12-07 11:09:20 +00:00
Jim Hague b2312aee12 Implement hostname authentication. 2018-12-05 17:20:28 +00:00
Jim Hague f64aa8703d First pass at a mostly stubbed GnuTLS implementation. 
This works enough to do a TLS lookup.
 2018-12-05 11:25:32 +00:00