1 /* $OpenBSD: myproposal.h,v 1.50 2016/02/09 05:30:04 djm Exp $ */
5 * Copyright (c) 2000 Markus Friedl. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
28 #include <openssl/opensslv.h>
30 /* conditional algorithm support */
32 #ifdef OPENSSL_HAS_ECC
33 #ifdef OPENSSL_HAS_NISTP521
34 # define KEX_ECDH_METHODS \
35 "ecdh-sha2-nistp256," \
36 "ecdh-sha2-nistp384," \
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,"
47 # define KEX_ECDH_METHODS \
48 "ecdh-sha2-nistp256," \
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,"
58 # define KEX_ECDH_METHODS
59 # define HOSTKEY_ECDSA_CERT_METHODS
60 # define HOSTKEY_ECDSA_METHODS
63 #ifdef OPENSSL_HAVE_EVPGCM
64 # define AESGCM_CIPHER_MODES \
65 ",aes128-gcm@openssh.com,aes256-gcm@openssh.com"
67 # define AESGCM_CIPHER_MODES
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 \
81 # define KEX_SHA2_METHODS
82 # define KEX_SHA2_GROUP14
83 # define SHA2_HMAC_MODES
87 # ifdef HAVE_EVP_SHA256
88 # define KEX_CURVE25519_METHODS "curve25519-sha256@libssh.org,"
90 # define KEX_CURVE25519_METHODS ""
92 #define KEX_COMMON_KEX \
93 KEX_CURVE25519_METHODS \
97 #define KEX_SERVER_KEX KEX_COMMON_KEX \
99 "diffie-hellman-group14-sha1" \
101 #define KEX_CLIENT_KEX KEX_COMMON_KEX \
102 "diffie-hellman-group-exchange-sha1," \
104 "diffie-hellman-group14-sha1"
106 #define KEX_DEFAULT_PK_ALG \
107 HOSTKEY_ECDSA_CERT_METHODS \
108 "ssh-ed25519-cert-v01@openssh.com," \
109 "ssh-rsa-cert-v01@openssh.com," \
110 HOSTKEY_ECDSA_METHODS \
116 /* the actual algorithms */
118 #define KEX_SERVER_ENCRYPT \
119 "chacha20-poly1305@openssh.com," \
120 "aes128-ctr,aes192-ctr,aes256-ctr" \
121 AESGCM_CIPHER_MODES \
122 ",aes128-cbc,aes192-cbc,aes256-cbc"
124 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT "," \
127 #define KEX_SERVER_MAC \
128 "umac-64-etm@openssh.com," \
129 "umac-128-etm@openssh.com," \
130 "hmac-sha2-256-etm@openssh.com," \
131 "hmac-sha2-512-etm@openssh.com," \
132 "hmac-sha1-etm@openssh.com," \
133 "umac-64@openssh.com," \
134 "umac-128@openssh.com," \
139 #define KEX_CLIENT_MAC KEX_SERVER_MAC
141 #else /* WITH_OPENSSL */
143 #define KEX_SERVER_KEX \
144 "curve25519-sha256@libssh.org"
145 #define KEX_DEFAULT_PK_ALG \
146 "ssh-ed25519-cert-v01@openssh.com," \
148 #define KEX_SERVER_ENCRYPT \
149 "chacha20-poly1305@openssh.com," \
150 "aes128-ctr,aes192-ctr,aes256-ctr"
151 #define KEX_SERVER_MAC \
152 "umac-64-etm@openssh.com," \
153 "umac-128-etm@openssh.com," \
154 "hmac-sha2-256-etm@openssh.com," \
155 "hmac-sha2-512-etm@openssh.com," \
156 "hmac-sha1-etm@openssh.com," \
157 "umac-64@openssh.com," \
158 "umac-128@openssh.com," \
163 #define KEX_CLIENT_KEX KEX_SERVER_KEX
164 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
165 #define KEX_CLIENT_MAC KEX_SERVER_MAC
167 #endif /* WITH_OPENSSL */
169 #define KEX_DEFAULT_COMP "none,zlib@openssh.com,zlib"
170 #define KEX_DEFAULT_LANG ""
174 KEX_DEFAULT_PK_ALG, \
175 KEX_CLIENT_ENCRYPT, \
176 KEX_CLIENT_ENCRYPT, \
186 KEX_DEFAULT_PK_ALG, \
187 KEX_SERVER_ENCRYPT, \
188 KEX_SERVER_ENCRYPT, \