crypto/openssh/myproposal.h

   1 /* $OpenBSD: myproposal.h,v 1.58 2019/02/23 08:20:43 djm Exp $ */
   2
   3 /*
   4  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <openssl/opensslv.h>
  28
  29 /* conditional algorithm support */
  30
  31 #ifdef OPENSSL_HAS_ECC
  32 #ifdef OPENSSL_HAS_NISTP521
  33 # define KEX_ECDH_METHODS \
  34         "ecdh-sha2-nistp256," \
  35         "ecdh-sha2-nistp384," \
  36         "ecdh-sha2-nistp521,"
  37 # define HOSTKEY_ECDSA_CERT_METHODS \
  38         "ecdsa-sha2-nistp256-cert-v01@openssh.com," \
  39         "ecdsa-sha2-nistp384-cert-v01@openssh.com," \
  40         "ecdsa-sha2-nistp521-cert-v01@openssh.com,"
  41 # define HOSTKEY_ECDSA_METHODS \
  42         "ecdsa-sha2-nistp256," \
  43         "ecdsa-sha2-nistp384," \
  44         "ecdsa-sha2-nistp521,"
  45 #else
  46 # define KEX_ECDH_METHODS \
  47         "ecdh-sha2-nistp256," \
  48         "ecdh-sha2-nistp384,"
  49 # define HOSTKEY_ECDSA_CERT_METHODS \
  50         "ecdsa-sha2-nistp256-cert-v01@openssh.com," \
  51         "ecdsa-sha2-nistp384-cert-v01@openssh.com,"
  52 # define HOSTKEY_ECDSA_METHODS \
  53         "ecdsa-sha2-nistp256," \
  54         "ecdsa-sha2-nistp384,"
  55 #endif
  56 #else
  57 # define KEX_ECDH_METHODS
  58 # define HOSTKEY_ECDSA_CERT_METHODS
  59 # define HOSTKEY_ECDSA_METHODS
  60 #endif
  61
  62 #ifdef OPENSSL_HAVE_EVPGCM
  63 # define AESGCM_CIPHER_MODES \
  64         ",aes128-gcm@openssh.com,aes256-gcm@openssh.com"
  65 #else
  66 # define AESGCM_CIPHER_MODES
  67 #endif
  68
  69 #ifdef HAVE_EVP_SHA256
  70 # define KEX_SHA2_METHODS \
  71         "diffie-hellman-group-exchange-sha256," \
  72         "diffie-hellman-group16-sha512," \
  73         "diffie-hellman-group18-sha512,"
  74 # define KEX_SHA2_GROUP14 \
  75         "diffie-hellman-group14-sha256,"
  76 #define SHA2_HMAC_MODES \
  77         "hmac-sha2-256," \
  78         "hmac-sha2-512,"
  79 #else
  80 # define KEX_SHA2_METHODS
  81 # define KEX_SHA2_GROUP14
  82 # define SHA2_HMAC_MODES
  83 #endif
  84
  85 #ifdef WITH_OPENSSL
  86 # ifdef HAVE_EVP_SHA256
  87 #  define KEX_CURVE25519_METHODS \
  88         "curve25519-sha256," \
  89         "curve25519-sha256@libssh.org,"
  90 # else
  91 #  define KEX_CURVE25519_METHODS ""
  92 # endif
  93 #define KEX_SERVER_KEX \
  94         KEX_CURVE25519_METHODS \
  95         KEX_ECDH_METHODS \
  96         KEX_SHA2_METHODS \
  97         KEX_SHA2_GROUP14 \
  98         "diffie-hellman-group14-sha1"
  99
 100 #define KEX_CLIENT_KEX KEX_SERVER_KEX
 101
 102 #define KEX_DEFAULT_PK_ALG      \
 103         HOSTKEY_ECDSA_CERT_METHODS \
 104         "ssh-ed25519-cert-v01@openssh.com," \
 105         "rsa-sha2-512-cert-v01@openssh.com," \
 106         "rsa-sha2-256-cert-v01@openssh.com," \
 107         "ssh-rsa-cert-v01@openssh.com," \
 108         HOSTKEY_ECDSA_METHODS \
 109         "ssh-ed25519," \
 110         "rsa-sha2-512," \
 111         "rsa-sha2-256," \
 112         "ssh-rsa"
 113
 114 /* the actual algorithms */
 115
 116 #define KEX_SERVER_ENCRYPT \
 117         "chacha20-poly1305@openssh.com," \
 118         "aes128-ctr,aes192-ctr,aes256-ctr" \
 119         AESGCM_CIPHER_MODES
 120
 121 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
 122
 123 #define KEX_SERVER_MAC \
 124         "umac-64-etm@openssh.com," \
 125         "umac-128-etm@openssh.com," \
 126         "hmac-sha2-256-etm@openssh.com," \
 127         "hmac-sha2-512-etm@openssh.com," \
 128         "hmac-sha1-etm@openssh.com," \
 129         "umac-64@openssh.com," \
 130         "umac-128@openssh.com," \
 131         "hmac-sha2-256," \
 132         "hmac-sha2-512," \
 133         "hmac-sha1"
 134
 135 #define KEX_CLIENT_MAC KEX_SERVER_MAC
 136
 137 /* Not a KEX value, but here so all the algorithm defaults are together */
 138 #define SSH_ALLOWED_CA_SIGALGS  \
 139         "ecdsa-sha2-nistp256," \
 140         "ecdsa-sha2-nistp384," \
 141         "ecdsa-sha2-nistp521," \
 142         "ssh-ed25519," \
 143         "rsa-sha2-512," \
 144         "rsa-sha2-256," \
 145         "ssh-rsa"
 146
 147 #else /* WITH_OPENSSL */
 148
 149 #define KEX_SERVER_KEX          \
 150         "curve25519-sha256," \
 151         "curve25519-sha256@libssh.org"
 152 #define KEX_DEFAULT_PK_ALG      \
 153         "ssh-ed25519-cert-v01@openssh.com," \
 154         "ssh-ed25519"
 155 #define KEX_SERVER_ENCRYPT \
 156         "chacha20-poly1305@openssh.com," \
 157         "aes128-ctr,aes192-ctr,aes256-ctr"
 158 #define KEX_SERVER_MAC \
 159         "umac-64-etm@openssh.com," \
 160         "umac-128-etm@openssh.com," \
 161         "hmac-sha2-256-etm@openssh.com," \
 162         "hmac-sha2-512-etm@openssh.com," \
 163         "hmac-sha1-etm@openssh.com," \
 164         "umac-64@openssh.com," \
 165         "umac-128@openssh.com," \
 166         "hmac-sha2-256," \
 167         "hmac-sha2-512," \
 168         "hmac-sha1"
 169
 170 #define KEX_CLIENT_KEX KEX_SERVER_KEX
 171 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
 172 #define KEX_CLIENT_MAC KEX_SERVER_MAC
 173
 174 #define SSH_ALLOWED_CA_SIGALGS  "ssh-ed25519"
 175
 176 #endif /* WITH_OPENSSL */
 177
 178 #define KEX_DEFAULT_COMP        "none,zlib@openssh.com"
 179 #define KEX_DEFAULT_LANG        ""
 180
 181 #define KEX_CLIENT \
 182         KEX_CLIENT_KEX, \
 183         KEX_DEFAULT_PK_ALG, \
 184         KEX_CLIENT_ENCRYPT, \
 185         KEX_CLIENT_ENCRYPT, \
 186         KEX_CLIENT_MAC, \
 187         KEX_CLIENT_MAC, \
 188         KEX_DEFAULT_COMP, \
 189         KEX_DEFAULT_COMP, \
 190         KEX_DEFAULT_LANG, \
 191         KEX_DEFAULT_LANG
 192
 193 #define KEX_SERVER \
 194         KEX_SERVER_KEX, \
 195         KEX_DEFAULT_PK_ALG, \
 196         KEX_SERVER_ENCRYPT, \
 197         KEX_SERVER_ENCRYPT, \
 198         KEX_SERVER_MAC, \
 199         KEX_SERVER_MAC, \
 200         KEX_DEFAULT_COMP, \
 201         KEX_DEFAULT_COMP, \
 202         KEX_DEFAULT_LANG, \
 203         KEX_DEFAULT_LANG
 204