1 /* 2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sublicense, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #include "inner.h" 26 27 /* see bearssl_ssl.h */ 28 void 29 br_ssl_server_init_full_rsa(br_ssl_server_context *cc, 30 const br_x509_certificate *chain, size_t chain_len, 31 const br_rsa_private_key *sk) 32 { 33 /* 34 * The "full" profile supports all implemented cipher suites. 35 * 36 * Rationale for suite order, from most important to least 37 * important rule: 38 * 39 * -- Don't use 3DES if AES is available. 40 * -- Try to have Forward Secrecy (ECDHE suite) if possible. 41 * -- ChaCha20+Poly1305 is better than AES/GCM (faster, smaller). 42 * -- GCM is better than CBC. 43 * -- AES-128 is preferred over AES-256 (AES-128 is already 44 * strong enough, and AES-256 is 40% more expensive). 45 */ 46 static const uint16_t suites[] = { 47 BR_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, 48 BR_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 49 BR_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, 50 BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, 51 BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, 52 BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, 53 BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, 54 BR_TLS_RSA_WITH_AES_128_GCM_SHA256, 55 BR_TLS_RSA_WITH_AES_256_GCM_SHA384, 56 BR_TLS_RSA_WITH_AES_128_CCM, 57 BR_TLS_RSA_WITH_AES_256_CCM, 58 BR_TLS_RSA_WITH_AES_128_CCM_8, 59 BR_TLS_RSA_WITH_AES_256_CCM_8, 60 BR_TLS_RSA_WITH_AES_128_CBC_SHA256, 61 BR_TLS_RSA_WITH_AES_256_CBC_SHA256, 62 BR_TLS_RSA_WITH_AES_128_CBC_SHA, 63 BR_TLS_RSA_WITH_AES_256_CBC_SHA, 64 BR_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, 65 BR_TLS_RSA_WITH_3DES_EDE_CBC_SHA 66 }; 67 68 /* 69 * All hash functions are activated. 70 * Note: the X.509 validation engine will nonetheless refuse to 71 * validate signatures that use MD5 as hash function. 72 */ 73 static const br_hash_class *hashes[] = { 74 &br_md5_vtable, 75 &br_sha1_vtable, 76 &br_sha224_vtable, 77 &br_sha256_vtable, 78 &br_sha384_vtable, 79 &br_sha512_vtable 80 }; 81 82 int id; 83 84 /* 85 * Reset server context and set supported versions from TLS-1.0 86 * to TLS-1.2 (inclusive). 87 */ 88 br_ssl_server_zero(cc); 89 br_ssl_engine_set_versions(&cc->eng, BR_TLS10, BR_TLS12); 90 91 /* 92 * Set suites and elliptic curve implementation (for ECDHE). 93 */ 94 br_ssl_engine_set_suites(&cc->eng, suites, 95 (sizeof suites) / (sizeof suites[0])); 96 br_ssl_engine_set_default_ec(&cc->eng); 97 98 /* 99 * Set the "server policy": handler for the certificate chain 100 * and private key operations. 101 */ 102 br_ssl_server_set_single_rsa(cc, chain, chain_len, sk, 103 BR_KEYTYPE_KEYX | BR_KEYTYPE_SIGN, 104 br_rsa_private_get_default(), 105 br_rsa_pkcs1_sign_get_default()); 106 107 /* 108 * Set supported hash functions. 109 */ 110 for (id = br_md5_ID; id <= br_sha512_ID; id ++) { 111 const br_hash_class *hc; 112 113 hc = hashes[id - 1]; 114 br_ssl_engine_set_hash(&cc->eng, id, hc); 115 } 116 117 /* 118 * Set the PRF implementations. 119 */ 120 br_ssl_engine_set_prf10(&cc->eng, &br_tls10_prf); 121 br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf); 122 br_ssl_engine_set_prf_sha384(&cc->eng, &br_tls12_sha384_prf); 123 124 /* 125 * Symmetric encryption. 126 */ 127 br_ssl_engine_set_default_aes_cbc(&cc->eng); 128 br_ssl_engine_set_default_aes_ccm(&cc->eng); 129 br_ssl_engine_set_default_aes_gcm(&cc->eng); 130 br_ssl_engine_set_default_des_cbc(&cc->eng); 131 br_ssl_engine_set_default_chapol(&cc->eng); 132 } 133