crypto/openssh/myproposal.h

   1 /* $OpenBSD: myproposal.h,v 1.50 2016/02/09 05:30:04 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_SHA256_METHODS \
  72         "diffie-hellman-group-exchange-sha256,"
  73 #define SHA2_HMAC_MODES \
  74         "hmac-sha2-256," \
  75         "hmac-sha2-512,"
  76 #else
  77 # define KEX_SHA256_METHODS
  78 # define SHA2_HMAC_MODES
  79 #endif
  80
  81 #ifdef WITH_OPENSSL
  82 # ifdef HAVE_EVP_SHA256
  83 #  define KEX_CURVE25519_METHODS "curve25519-sha256@libssh.org,"
  84 # else
  85 #  define KEX_CURVE25519_METHODS ""
  86 # endif
  87 #define KEX_COMMON_KEX \
  88         KEX_CURVE25519_METHODS \
  89         KEX_ECDH_METHODS \
  90         KEX_SHA256_METHODS
  91
  92 #define KEX_SERVER_KEX KEX_COMMON_KEX \
  93         "diffie-hellman-group14-sha1" \
  94
  95 #define KEX_CLIENT_KEX KEX_COMMON_KEX \
  96         "diffie-hellman-group-exchange-sha1," \
  97         "diffie-hellman-group14-sha1"
  98
  99 #define KEX_DEFAULT_PK_ALG      \
 100         HOSTKEY_ECDSA_CERT_METHODS \
 101         "ssh-ed25519-cert-v01@openssh.com," \
 102         "ssh-rsa-cert-v01@openssh.com," \
 103         "ssh-dss-cert-v01@openssh.com," \
 104         HOSTKEY_ECDSA_METHODS \
 105         "ssh-ed25519," \
 106         "rsa-sha2-512," \
 107         "rsa-sha2-256," \
 108         "ssh-rsa," \
 109         "ssh-dss"
 110
 111 /* the actual algorithms */
 112
 113 #define KEX_SERVER_ENCRYPT \
 114         "chacha20-poly1305@openssh.com," \
 115         "aes128-ctr,aes192-ctr,aes256-ctr" \
 116         AESGCM_CIPHER_MODES \
 117         ",aes128-cbc,aes192-cbc,aes256-cbc"
 118
 119 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT "," \
 120         "3des-cbc"
 121
 122 #define KEX_SERVER_MAC \
 123         "umac-64-etm@openssh.com," \
 124         "umac-128-etm@openssh.com," \
 125         "hmac-sha2-256-etm@openssh.com," \
 126         "hmac-sha2-512-etm@openssh.com," \
 127         "hmac-sha1-etm@openssh.com," \
 128         "umac-64@openssh.com," \
 129         "umac-128@openssh.com," \
 130         "hmac-sha2-256," \
 131         "hmac-sha2-512," \
 132         "hmac-sha1"
 133
 134 #define KEX_CLIENT_MAC KEX_SERVER_MAC
 135
 136 #else /* WITH_OPENSSL */
 137
 138 #define KEX_SERVER_KEX          \
 139         "curve25519-sha256@libssh.org"
 140 #define KEX_DEFAULT_PK_ALG      \
 141         "ssh-ed25519-cert-v01@openssh.com," \
 142         "ssh-ed25519"
 143 #define KEX_SERVER_ENCRYPT \
 144         "chacha20-poly1305@openssh.com," \
 145         "aes128-ctr,aes192-ctr,aes256-ctr"
 146 #define KEX_SERVER_MAC \
 147         "umac-64-etm@openssh.com," \
 148         "umac-128-etm@openssh.com," \
 149         "hmac-sha2-256-etm@openssh.com," \
 150         "hmac-sha2-512-etm@openssh.com," \
 151         "hmac-sha1-etm@openssh.com," \
 152         "umac-64@openssh.com," \
 153         "umac-128@openssh.com," \
 154         "hmac-sha2-256," \
 155         "hmac-sha2-512," \
 156         "hmac-sha1"
 157
 158 #define KEX_CLIENT_KEX KEX_SERVER_KEX
 159 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
 160 #define KEX_CLIENT_MAC KEX_SERVER_MAC
 161
 162 #endif /* WITH_OPENSSL */
 163
 164 #define KEX_DEFAULT_COMP        "none,zlib@openssh.com,zlib"
 165 #define KEX_DEFAULT_LANG        ""
 166
 167 #define KEX_CLIENT \
 168         KEX_CLIENT_KEX, \
 169         KEX_DEFAULT_PK_ALG, \
 170         KEX_CLIENT_ENCRYPT, \
 171         KEX_CLIENT_ENCRYPT, \
 172         KEX_CLIENT_MAC, \
 173         KEX_CLIENT_MAC, \
 174         KEX_DEFAULT_COMP, \
 175         KEX_DEFAULT_COMP, \
 176         KEX_DEFAULT_LANG, \
 177         KEX_DEFAULT_LANG
 178
 179 #define KEX_SERVER \
 180         KEX_SERVER_KEX, \
 181         KEX_DEFAULT_PK_ALG, \
 182         KEX_SERVER_ENCRYPT, \
 183         KEX_SERVER_ENCRYPT, \
 184         KEX_SERVER_MAC, \
 185         KEX_SERVER_MAC, \
 186         KEX_DEFAULT_COMP, \
 187         KEX_DEFAULT_COMP, \
 188         KEX_DEFAULT_LANG, \
 189         KEX_DEFAULT_LANG
 190