1 /* $OpenBSD: myproposal.h,v 1.57 2018/09/12 01:34:02 djm Exp $ */ 2 /* $FreeBSD$ */ 3 4 /* 5 * Copyright (c) 2000 Markus Friedl. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <openssl/opensslv.h> 29 30 /* conditional algorithm support */ 31 32 #ifdef OPENSSL_HAS_ECC 33 #ifdef OPENSSL_HAS_NISTP521 34 # define KEX_ECDH_METHODS \ 35 "ecdh-sha2-nistp256," \ 36 "ecdh-sha2-nistp384," \ 37 "ecdh-sha2-nistp521," 38 # define HOSTKEY_ECDSA_CERT_METHODS \ 39 "ecdsa-sha2-nistp256-cert-v01@openssh.com," \ 40 "ecdsa-sha2-nistp384-cert-v01@openssh.com," \ 41 "ecdsa-sha2-nistp521-cert-v01@openssh.com," 42 # define HOSTKEY_ECDSA_METHODS \ 43 "ecdsa-sha2-nistp256," \ 44 "ecdsa-sha2-nistp384," \ 45 "ecdsa-sha2-nistp521," 46 #else 47 # define KEX_ECDH_METHODS \ 48 "ecdh-sha2-nistp256," \ 49 "ecdh-sha2-nistp384," 50 # define HOSTKEY_ECDSA_CERT_METHODS \ 51 "ecdsa-sha2-nistp256-cert-v01@openssh.com," \ 52 "ecdsa-sha2-nistp384-cert-v01@openssh.com," 53 # define HOSTKEY_ECDSA_METHODS \ 54 "ecdsa-sha2-nistp256," \ 55 "ecdsa-sha2-nistp384," 56 #endif 57 #else 58 # define KEX_ECDH_METHODS 59 # define HOSTKEY_ECDSA_CERT_METHODS 60 # define HOSTKEY_ECDSA_METHODS 61 #endif 62 63 #ifdef OPENSSL_HAVE_EVPGCM 64 # define AESGCM_CIPHER_MODES \ 65 ",aes128-gcm@openssh.com,aes256-gcm@openssh.com" 66 #else 67 # define AESGCM_CIPHER_MODES 68 #endif 69 70 #ifdef HAVE_EVP_SHA256 71 # define KEX_SHA2_METHODS \ 72 "diffie-hellman-group-exchange-sha256," \ 73 "diffie-hellman-group16-sha512," \ 74 "diffie-hellman-group18-sha512," 75 # define KEX_SHA2_GROUP14 \ 76 "diffie-hellman-group14-sha256," 77 #define SHA2_HMAC_MODES \ 78 "hmac-sha2-256," \ 79 "hmac-sha2-512," 80 #else 81 # define KEX_SHA2_METHODS 82 # define KEX_SHA2_GROUP14 83 # define SHA2_HMAC_MODES 84 #endif 85 86 #ifdef WITH_OPENSSL 87 # ifdef HAVE_EVP_SHA256 88 # define KEX_CURVE25519_METHODS \ 89 "curve25519-sha256," \ 90 "curve25519-sha256@libssh.org," 91 # else 92 # define KEX_CURVE25519_METHODS "" 93 # endif 94 #define KEX_COMMON_KEX \ 95 KEX_CURVE25519_METHODS \ 96 KEX_ECDH_METHODS \ 97 KEX_SHA2_METHODS 98 99 #define KEX_SERVER_KEX KEX_COMMON_KEX \ 100 KEX_SHA2_GROUP14 \ 101 "diffie-hellman-group14-sha1" \ 102 103 #define KEX_CLIENT_KEX KEX_COMMON_KEX \ 104 "diffie-hellman-group-exchange-sha1," \ 105 KEX_SHA2_GROUP14 \ 106 "diffie-hellman-group14-sha1" 107 108 #define KEX_DEFAULT_PK_ALG \ 109 HOSTKEY_ECDSA_CERT_METHODS \ 110 "ssh-ed25519-cert-v01@openssh.com," \ 111 "rsa-sha2-512-cert-v01@openssh.com," \ 112 "rsa-sha2-256-cert-v01@openssh.com," \ 113 "ssh-rsa-cert-v01@openssh.com," \ 114 HOSTKEY_ECDSA_METHODS \ 115 "ssh-ed25519," \ 116 "rsa-sha2-512," \ 117 "rsa-sha2-256," \ 118 "ssh-rsa" 119 120 /* the actual algorithms */ 121 122 #define KEX_SERVER_ENCRYPT \ 123 "chacha20-poly1305@openssh.com," \ 124 "aes128-ctr,aes192-ctr,aes256-ctr" \ 125 AESGCM_CIPHER_MODES \ 126 ",aes128-cbc,aes192-cbc,aes256-cbc" 127 128 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT 129 130 #define KEX_SERVER_MAC \ 131 "umac-64-etm@openssh.com," \ 132 "umac-128-etm@openssh.com," \ 133 "hmac-sha2-256-etm@openssh.com," \ 134 "hmac-sha2-512-etm@openssh.com," \ 135 "hmac-sha1-etm@openssh.com," \ 136 "umac-64@openssh.com," \ 137 "umac-128@openssh.com," \ 138 "hmac-sha2-256," \ 139 "hmac-sha2-512," \ 140 "hmac-sha1" 141 142 #define KEX_CLIENT_MAC KEX_SERVER_MAC 143 144 /* Not a KEX value, but here so all the algorithm defaults are together */ 145 #define SSH_ALLOWED_CA_SIGALGS \ 146 "ecdsa-sha2-nistp256," \ 147 "ecdsa-sha2-nistp384," \ 148 "ecdsa-sha2-nistp521," \ 149 "ssh-ed25519," \ 150 "rsa-sha2-512," \ 151 "rsa-sha2-256," \ 152 "ssh-rsa" 153 154 #else /* WITH_OPENSSL */ 155 156 #define KEX_SERVER_KEX \ 157 "curve25519-sha256," \ 158 "curve25519-sha256@libssh.org" 159 #define KEX_DEFAULT_PK_ALG \ 160 "ssh-ed25519-cert-v01@openssh.com," \ 161 "ssh-ed25519" 162 #define KEX_SERVER_ENCRYPT \ 163 "chacha20-poly1305@openssh.com," \ 164 "aes128-ctr,aes192-ctr,aes256-ctr" 165 #define KEX_SERVER_MAC \ 166 "umac-64-etm@openssh.com," \ 167 "umac-128-etm@openssh.com," \ 168 "hmac-sha2-256-etm@openssh.com," \ 169 "hmac-sha2-512-etm@openssh.com," \ 170 "hmac-sha1-etm@openssh.com," \ 171 "umac-64@openssh.com," \ 172 "umac-128@openssh.com," \ 173 "hmac-sha2-256," \ 174 "hmac-sha2-512," \ 175 "hmac-sha1" 176 177 #define KEX_CLIENT_KEX KEX_SERVER_KEX 178 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT 179 #define KEX_CLIENT_MAC KEX_SERVER_MAC 180 181 #define SSH_ALLOWED_CA_SIGALGS "ssh-ed25519" 182 183 #endif /* WITH_OPENSSL */ 184 185 #define KEX_DEFAULT_COMP "none,zlib@openssh.com" 186 #define KEX_DEFAULT_LANG "" 187 188 #define KEX_CLIENT \ 189 KEX_CLIENT_KEX, \ 190 KEX_DEFAULT_PK_ALG, \ 191 KEX_CLIENT_ENCRYPT, \ 192 KEX_CLIENT_ENCRYPT, \ 193 KEX_CLIENT_MAC, \ 194 KEX_CLIENT_MAC, \ 195 KEX_DEFAULT_COMP, \ 196 KEX_DEFAULT_COMP, \ 197 KEX_DEFAULT_LANG, \ 198 KEX_DEFAULT_LANG 199 200 #define KEX_SERVER \ 201 KEX_SERVER_KEX, \ 202 KEX_DEFAULT_PK_ALG, \ 203 KEX_SERVER_ENCRYPT, \ 204 KEX_SERVER_ENCRYPT, \ 205 KEX_SERVER_MAC, \ 206 KEX_SERVER_MAC, \ 207 KEX_DEFAULT_COMP, \ 208 KEX_DEFAULT_COMP, \ 209 KEX_DEFAULT_LANG, \ 210 KEX_DEFAULT_LANG 211 212