xref: /freebsd/contrib/bearssl/src/ssl/ssl_server_full_ec.c (revision 2aaf9152a852aba9eb2036b95f4948ee77988826)
1*0957b409SSimon J. Gerraty /*
2*0957b409SSimon J. Gerraty  * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3*0957b409SSimon J. Gerraty  *
4*0957b409SSimon J. Gerraty  * Permission is hereby granted, free of charge, to any person obtaining
5*0957b409SSimon J. Gerraty  * a copy of this software and associated documentation files (the
6*0957b409SSimon J. Gerraty  * "Software"), to deal in the Software without restriction, including
7*0957b409SSimon J. Gerraty  * without limitation the rights to use, copy, modify, merge, publish,
8*0957b409SSimon J. Gerraty  * distribute, sublicense, and/or sell copies of the Software, and to
9*0957b409SSimon J. Gerraty  * permit persons to whom the Software is furnished to do so, subject to
10*0957b409SSimon J. Gerraty  * the following conditions:
11*0957b409SSimon J. Gerraty  *
12*0957b409SSimon J. Gerraty  * The above copyright notice and this permission notice shall be
13*0957b409SSimon J. Gerraty  * included in all copies or substantial portions of the Software.
14*0957b409SSimon J. Gerraty  *
15*0957b409SSimon J. Gerraty  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16*0957b409SSimon J. Gerraty  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17*0957b409SSimon J. Gerraty  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18*0957b409SSimon J. Gerraty  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19*0957b409SSimon J. Gerraty  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20*0957b409SSimon J. Gerraty  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21*0957b409SSimon J. Gerraty  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22*0957b409SSimon J. Gerraty  * SOFTWARE.
23*0957b409SSimon J. Gerraty  */
24*0957b409SSimon J. Gerraty 
25*0957b409SSimon J. Gerraty #include "inner.h"
26*0957b409SSimon J. Gerraty 
27*0957b409SSimon J. Gerraty /* see bearssl_ssl.h */
28*0957b409SSimon J. Gerraty void
br_ssl_server_init_full_ec(br_ssl_server_context * cc,const br_x509_certificate * chain,size_t chain_len,unsigned cert_issuer_key_type,const br_ec_private_key * sk)29*0957b409SSimon J. Gerraty br_ssl_server_init_full_ec(br_ssl_server_context *cc,
30*0957b409SSimon J. Gerraty 	const br_x509_certificate *chain, size_t chain_len,
31*0957b409SSimon J. Gerraty 	unsigned cert_issuer_key_type, const br_ec_private_key *sk)
32*0957b409SSimon J. Gerraty {
33*0957b409SSimon J. Gerraty 	/*
34*0957b409SSimon J. Gerraty 	 * The "full" profile supports all implemented cipher suites.
35*0957b409SSimon J. Gerraty 	 *
36*0957b409SSimon J. Gerraty 	 * Rationale for suite order, from most important to least
37*0957b409SSimon J. Gerraty 	 * important rule:
38*0957b409SSimon J. Gerraty 	 *
39*0957b409SSimon J. Gerraty 	 * -- Don't use 3DES if AES is available.
40*0957b409SSimon J. Gerraty 	 * -- Try to have Forward Secrecy (ECDHE suite) if possible.
41*0957b409SSimon J. Gerraty 	 * -- ChaCha20+Poly1305 is better than AES/GCM (faster, smaller).
42*0957b409SSimon J. Gerraty 	 * -- GCM is better than CCM and CBC. CCM is better than CBC.
43*0957b409SSimon J. Gerraty 	 * -- CCM is better than CCM_8.
44*0957b409SSimon J. Gerraty 	 * -- AES-128 is preferred over AES-256 (AES-128 is already
45*0957b409SSimon J. Gerraty 	 *    strong enough, and AES-256 is 40% more expensive).
46*0957b409SSimon J. Gerraty 	 *
47*0957b409SSimon J. Gerraty 	 * Note that for ECDH suites, the list will be automatically
48*0957b409SSimon J. Gerraty 	 * filtered based on the issuing CA key type.
49*0957b409SSimon J. Gerraty 	 */
50*0957b409SSimon J. Gerraty 	static const uint16_t suites[] = {
51*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
52*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
53*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
54*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_128_CCM,
55*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_256_CCM,
56*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8,
57*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8,
58*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
59*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
60*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
61*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
62*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
63*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256,
64*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
65*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384,
66*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256,
67*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256,
68*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384,
69*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384,
70*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
71*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,
72*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
73*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,
74*0957b409SSimon J. Gerraty 		BR_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
75*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
76*0957b409SSimon J. Gerraty 		BR_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
77*0957b409SSimon J. Gerraty 	};
78*0957b409SSimon J. Gerraty 
79*0957b409SSimon J. Gerraty 	/*
80*0957b409SSimon J. Gerraty 	 * All hash functions are activated.
81*0957b409SSimon J. Gerraty 	 * Note: the X.509 validation engine will nonetheless refuse to
82*0957b409SSimon J. Gerraty 	 * validate signatures that use MD5 as hash function.
83*0957b409SSimon J. Gerraty 	 */
84*0957b409SSimon J. Gerraty 	static const br_hash_class *hashes[] = {
85*0957b409SSimon J. Gerraty 		&br_md5_vtable,
86*0957b409SSimon J. Gerraty 		&br_sha1_vtable,
87*0957b409SSimon J. Gerraty 		&br_sha224_vtable,
88*0957b409SSimon J. Gerraty 		&br_sha256_vtable,
89*0957b409SSimon J. Gerraty 		&br_sha384_vtable,
90*0957b409SSimon J. Gerraty 		&br_sha512_vtable
91*0957b409SSimon J. Gerraty 	};
92*0957b409SSimon J. Gerraty 
93*0957b409SSimon J. Gerraty 	int id;
94*0957b409SSimon J. Gerraty 
95*0957b409SSimon J. Gerraty 	/*
96*0957b409SSimon J. Gerraty 	 * Reset server context and set supported versions from TLS-1.0
97*0957b409SSimon J. Gerraty 	 * to TLS-1.2 (inclusive).
98*0957b409SSimon J. Gerraty 	 */
99*0957b409SSimon J. Gerraty 	br_ssl_server_zero(cc);
100*0957b409SSimon J. Gerraty 	br_ssl_engine_set_versions(&cc->eng, BR_TLS10, BR_TLS12);
101*0957b409SSimon J. Gerraty 
102*0957b409SSimon J. Gerraty 	/*
103*0957b409SSimon J. Gerraty 	 * Set suites and elliptic curve implementation (for ECDHE).
104*0957b409SSimon J. Gerraty 	 */
105*0957b409SSimon J. Gerraty 	br_ssl_engine_set_suites(&cc->eng, suites,
106*0957b409SSimon J. Gerraty 		(sizeof suites) / (sizeof suites[0]));
107*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_ec(&cc->eng);
108*0957b409SSimon J. Gerraty 
109*0957b409SSimon J. Gerraty 	/*
110*0957b409SSimon J. Gerraty 	 * Set the "server policy": handler for the certificate chain
111*0957b409SSimon J. Gerraty 	 * and private key operations.
112*0957b409SSimon J. Gerraty 	 */
113*0957b409SSimon J. Gerraty 	br_ssl_server_set_single_ec(cc, chain, chain_len, sk,
114*0957b409SSimon J. Gerraty 		BR_KEYTYPE_KEYX | BR_KEYTYPE_SIGN,
115*0957b409SSimon J. Gerraty 		cert_issuer_key_type,
116*0957b409SSimon J. Gerraty 		br_ssl_engine_get_ec(&cc->eng),
117*0957b409SSimon J. Gerraty #if BR_LOMUL
118*0957b409SSimon J. Gerraty 		br_ecdsa_i15_sign_asn1
119*0957b409SSimon J. Gerraty #else
120*0957b409SSimon J. Gerraty 		br_ecdsa_i31_sign_asn1
121*0957b409SSimon J. Gerraty #endif
122*0957b409SSimon J. Gerraty 	);
123*0957b409SSimon J. Gerraty 
124*0957b409SSimon J. Gerraty 	/*
125*0957b409SSimon J. Gerraty 	 * Set supported hash functions.
126*0957b409SSimon J. Gerraty 	 */
127*0957b409SSimon J. Gerraty 	for (id = br_md5_ID; id <= br_sha512_ID; id ++) {
128*0957b409SSimon J. Gerraty 		const br_hash_class *hc;
129*0957b409SSimon J. Gerraty 
130*0957b409SSimon J. Gerraty 		hc = hashes[id - 1];
131*0957b409SSimon J. Gerraty 		br_ssl_engine_set_hash(&cc->eng, id, hc);
132*0957b409SSimon J. Gerraty 	}
133*0957b409SSimon J. Gerraty 
134*0957b409SSimon J. Gerraty 	/*
135*0957b409SSimon J. Gerraty 	 * Set the PRF implementations.
136*0957b409SSimon J. Gerraty 	 */
137*0957b409SSimon J. Gerraty 	br_ssl_engine_set_prf10(&cc->eng, &br_tls10_prf);
138*0957b409SSimon J. Gerraty 	br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf);
139*0957b409SSimon J. Gerraty 	br_ssl_engine_set_prf_sha384(&cc->eng, &br_tls12_sha384_prf);
140*0957b409SSimon J. Gerraty 
141*0957b409SSimon J. Gerraty 	/*
142*0957b409SSimon J. Gerraty 	 * Symmetric encryption.
143*0957b409SSimon J. Gerraty 	 */
144*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_aes_cbc(&cc->eng);
145*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_aes_ccm(&cc->eng);
146*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_aes_gcm(&cc->eng);
147*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_des_cbc(&cc->eng);
148*0957b409SSimon J. Gerraty 	br_ssl_engine_set_default_chapol(&cc->eng);
149*0957b409SSimon J. Gerraty }
150