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/*
* Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "inner.h"
/* see bearssl_ssl.h */
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)
{
/*
* The "full" profile supports all implemented cipher suites.
*
* Rationale for suite order, from most important to least
* important rule:
*
* -- Don't use 3DES if AES is available.
* -- Try to have Forward Secrecy (ECDHE suite) if possible.
* -- ChaCha20+Poly1305 is better than AES/GCM (faster, smaller).
* -- GCM is better than CCM and CBC. CCM is better than CBC.
* -- CCM is better than CCM_8.
* -- AES-128 is preferred over AES-256 (AES-128 is already
* strong enough, and AES-256 is 40% more expensive).
*
* Note that for ECDH suites, the list will be automatically
* filtered based on the issuing CA key type.
*/
static const uint16_t suites[] = {
BR_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
BR_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
BR_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
BR_TLS_ECDHE_ECDSA_WITH_AES_128_CCM,
BR_TLS_ECDHE_ECDSA_WITH_AES_256_CCM,
BR_TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8,
BR_TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8,
BR_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
BR_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
BR_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
BR_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
BR_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
BR_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256,
BR_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
BR_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384,
BR_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256,
BR_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256,
BR_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384,
BR_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384,
BR_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
BR_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,
BR_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
BR_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,
BR_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
BR_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
BR_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
};
/*
* All hash functions are activated.
* Note: the X.509 validation engine will nonetheless refuse to
* validate signatures that use MD5 as hash function.
*/
static const br_hash_class *hashes[] = {
&br_md5_vtable,
&br_sha1_vtable,
&br_sha224_vtable,
&br_sha256_vtable,
&br_sha384_vtable,
&br_sha512_vtable
};
int id;
/*
* Reset server context and set supported versions from TLS-1.0
* to TLS-1.2 (inclusive).
*/
br_ssl_server_zero(cc);
br_ssl_engine_set_versions(&cc->eng, BR_TLS10, BR_TLS12);
/*
* Set suites and elliptic curve implementation (for ECDHE).
*/
br_ssl_engine_set_suites(&cc->eng, suites,
(sizeof suites) / (sizeof suites[0]));
br_ssl_engine_set_default_ec(&cc->eng);
/*
* Set the "server policy": handler for the certificate chain
* and private key operations.
*/
br_ssl_server_set_single_ec(cc, chain, chain_len, sk,
BR_KEYTYPE_KEYX | BR_KEYTYPE_SIGN,
cert_issuer_key_type,
br_ssl_engine_get_ec(&cc->eng),
#if BR_LOMUL
br_ecdsa_i15_sign_asn1
#else
br_ecdsa_i31_sign_asn1
#endif
);
/*
* Set supported hash functions.
*/
for (id = br_md5_ID; id <= br_sha512_ID; id ++) {
const br_hash_class *hc;
hc = hashes[id - 1];
br_ssl_engine_set_hash(&cc->eng, id, hc);
}
/*
* Set the PRF implementations.
*/
br_ssl_engine_set_prf10(&cc->eng, &br_tls10_prf);
br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf);
br_ssl_engine_set_prf_sha384(&cc->eng, &br_tls12_sha384_prf);
/*
* Symmetric encryption.
*/
br_ssl_engine_set_default_aes_cbc(&cc->eng);
br_ssl_engine_set_default_aes_ccm(&cc->eng);
br_ssl_engine_set_default_aes_gcm(&cc->eng);
br_ssl_engine_set_default_des_cbc(&cc->eng);
br_ssl_engine_set_default_chapol(&cc->eng);
}
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