crypto/openssh/myproposal.h

   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