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djm@openbsd.orga22b9ef2015-03-24 09:17:21 +00001/* $OpenBSD: myproposal.h,v 1.42 2015/03/24 09:17:21 djm Exp $ */
Ben Lindstrom36579d32001-01-29 07:39:26 +00002
Damien Millere4340be2000-09-16 13:29:08 +11003/*
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 */
Tim Rice425a6882006-03-15 20:17:05 -080026
27#include <openssl/opensslv.h>
28
Darren Tuckerb8ae92d2013-06-11 12:10:02 +100029/* conditional algorithm support */
30
Damien Miller6af914a2010-09-10 11:39:26 +100031#ifdef OPENSSL_HAS_ECC
Darren Tucker37bcef52013-11-09 18:39:25 +110032#ifdef OPENSSL_HAS_NISTP521
Damien Miller6af914a2010-09-10 11:39:26 +100033# define KEX_ECDH_METHODS \
Damien Millereb8b60e2010-08-31 22:41:14 +100034 "ecdh-sha2-nistp256," \
35 "ecdh-sha2-nistp384," \
Damien Miller6af914a2010-09-10 11:39:26 +100036 "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
Darren Tucker37bcef52013-11-09 18:39:25 +110046# 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
Damien Miller6af914a2010-09-10 11:39:26 +100057# define KEX_ECDH_METHODS
58# define HOSTKEY_ECDSA_CERT_METHODS
59# define HOSTKEY_ECDSA_METHODS
60#endif
61
Darren Tucker97b62f42013-06-11 11:47:24 +100062#ifdef OPENSSL_HAVE_EVPGCM
63# define AESGCM_CIPHER_MODES \
djm@openbsd.orga22b9ef2015-03-24 09:17:21 +000064 ",aes128-gcm@openssh.com,aes256-gcm@openssh.com"
Darren Tucker97b62f42013-06-11 11:47:24 +100065#else
66# define AESGCM_CIPHER_MODES
67#endif
68
Darren Tucker2ea9eb72013-06-05 15:04:00 +100069#ifdef HAVE_EVP_SHA256
Damien Miller6af914a2010-09-10 11:39:26 +100070# define KEX_SHA256_METHODS \
Damien Miller9b160862011-01-13 22:00:20 +110071 "diffie-hellman-group-exchange-sha256,"
Darren Tuckerb8ae92d2013-06-11 12:10:02 +100072#define SHA2_HMAC_MODES \
73 "hmac-sha2-256," \
74 "hmac-sha2-512,"
Damien Miller6af914a2010-09-10 11:39:26 +100075#else
76# define KEX_SHA256_METHODS
Darren Tuckerb8ae92d2013-06-11 12:10:02 +100077# define SHA2_HMAC_MODES
Damien Miller6af914a2010-09-10 11:39:26 +100078#endif
79
Damien Miller1f0311c2014-05-15 14:24:09 +100080#ifdef WITH_OPENSSL
Damien Miller2f3d1e72014-08-19 11:14:36 +100081# ifdef HAVE_EVP_SHA256
Darren Tuckerd7af0cc2014-06-11 07:37:25 +100082# define KEX_CURVE25519_METHODS "curve25519-sha256@libssh.org,"
83# else
84# define KEX_CURVE25519_METHODS ""
85# endif
86#define KEX_SERVER_KEX \
87 KEX_CURVE25519_METHODS \
Damien Miller6af914a2010-09-10 11:39:26 +100088 KEX_ECDH_METHODS \
89 KEX_SHA256_METHODS \
Damien Miller9235a032014-04-20 13:17:20 +100090 "diffie-hellman-group14-sha1"
91
92#define KEX_CLIENT_KEX KEX_SERVER_KEX "," \
Damien Millera63128d2006-03-15 12:08:28 +110093 "diffie-hellman-group-exchange-sha1," \
Damien Miller51b4f822006-03-26 00:04:32 +110094 "diffie-hellman-group1-sha1"
Tim Rice425a6882006-03-15 20:17:05 -080095
Damien Miller4e270b02010-04-16 15:56:21 +100096#define KEX_DEFAULT_PK_ALG \
Damien Miller6af914a2010-09-10 11:39:26 +100097 HOSTKEY_ECDSA_CERT_METHODS \
Damien Miller5be9d9e2013-12-07 11:24:01 +110098 "ssh-ed25519-cert-v01@openssh.com," \
Damien Millereb8b60e2010-08-31 22:41:14 +100099 "ssh-rsa-cert-v01@openssh.com," \
100 "ssh-dss-cert-v01@openssh.com," \
101 "ssh-rsa-cert-v00@openssh.com," \
102 "ssh-dss-cert-v00@openssh.com," \
Damien Miller6af914a2010-09-10 11:39:26 +1000103 HOSTKEY_ECDSA_METHODS \
Damien Miller5be9d9e2013-12-07 11:24:01 +1100104 "ssh-ed25519," \
Damien Millereb8b60e2010-08-31 22:41:14 +1000105 "ssh-rsa," \
106 "ssh-dss"
Damien Miller67081b52009-01-28 16:33:31 +1100107
Darren Tuckerb8ae92d2013-06-11 12:10:02 +1000108/* the actual algorithms */
109
Damien Miller9235a032014-04-20 13:17:20 +1000110#define KEX_SERVER_ENCRYPT \
djm@openbsd.orga22b9ef2015-03-24 09:17:21 +0000111 "chacha20-poly1305@openssh.com," \
112 "aes128-ctr,aes192-ctr,aes256-ctr" \
113 AESGCM_CIPHER_MODES
Damien Miller9235a032014-04-20 13:17:20 +1000114
115#define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT "," \
116 "arcfour256,arcfour128," \
Damien Miller3710f272005-05-26 12:19:17 +1000117 "aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc," \
Damien Miller67081b52009-01-28 16:33:31 +1100118 "aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se"
Darren Tuckerb8ae92d2013-06-11 12:10:02 +1000119
Damien Miller9235a032014-04-20 13:17:20 +1000120#define KEX_SERVER_MAC \
Damien Milleraf43a7a2012-12-12 10:46:31 +1100121 "umac-64-etm@openssh.com," \
122 "umac-128-etm@openssh.com," \
123 "hmac-sha2-256-etm@openssh.com," \
124 "hmac-sha2-512-etm@openssh.com," \
Damien Miller6262d762014-07-17 09:52:07 +1000125 "hmac-sha1-etm@openssh.com," \
Damien Miller9235a032014-04-20 13:17:20 +1000126 "umac-64@openssh.com," \
127 "umac-128@openssh.com," \
128 "hmac-sha2-256," \
Damien Miller6262d762014-07-17 09:52:07 +1000129 "hmac-sha2-512," \
130 "hmac-sha1"
Damien Miller9235a032014-04-20 13:17:20 +1000131
132#define KEX_CLIENT_MAC KEX_SERVER_MAC "," \
133 "hmac-md5-etm@openssh.com," \
Damien Milleraf43a7a2012-12-12 10:46:31 +1100134 "hmac-ripemd160-etm@openssh.com," \
135 "hmac-sha1-96-etm@openssh.com," \
136 "hmac-md5-96-etm@openssh.com," \
Damien Miller20bd4532011-08-06 06:17:30 +1000137 "hmac-md5," \
Damien Miller20bd4532011-08-06 06:17:30 +1000138 "hmac-ripemd160," \
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000139 "hmac-ripemd160@openssh.com," \
Damien Miller20bd4532011-08-06 06:17:30 +1000140 "hmac-sha1-96," \
141 "hmac-md5-96"
142
Damien Miller1f0311c2014-05-15 14:24:09 +1000143#else
144
145#define KEX_SERVER_KEX \
146 "curve25519-sha256@libssh.org"
147#define KEX_DEFAULT_PK_ALG \
148 "ssh-ed25519-cert-v01@openssh.com," \
149 "ssh-ed25519"
150#define KEX_SERVER_ENCRYPT \
djm@openbsd.orga22b9ef2015-03-24 09:17:21 +0000151 "chacha20-poly1305@openssh.com,"
152 "aes128-ctr,aes192-ctr,aes256-ctr"
Damien Miller1f0311c2014-05-15 14:24:09 +1000153#define KEX_SERVER_MAC \
Damien Miller294c58a2014-05-15 14:35:03 +1000154 "umac-64-etm@openssh.com," \
155 "umac-128-etm@openssh.com," \
Damien Miller1f0311c2014-05-15 14:24:09 +1000156 "hmac-sha2-256-etm@openssh.com," \
157 "hmac-sha2-512-etm@openssh.com," \
Damien Miller6262d762014-07-17 09:52:07 +1000158 "hmac-sha1-etm@openssh.com," \
Damien Miller294c58a2014-05-15 14:35:03 +1000159 "umac-64@openssh.com," \
160 "umac-128@openssh.com," \
Damien Miller1f0311c2014-05-15 14:24:09 +1000161 "hmac-sha2-256," \
Damien Miller6262d762014-07-17 09:52:07 +1000162 "hmac-sha2-512," \
163 "hmac-sha1"
Damien Miller1f0311c2014-05-15 14:24:09 +1000164
165#define KEX_CLIENT_KEX KEX_SERVER_KEX
166#define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
Damien Miller6262d762014-07-17 09:52:07 +1000167#define KEX_CLIENT_MAC KEX_SERVER_MAC
Damien Miller1f0311c2014-05-15 14:24:09 +1000168
169#endif /* WITH_OPENSSL */
170
Damien Miller9786e6e2005-07-26 21:54:56 +1000171#define KEX_DEFAULT_COMP "none,zlib@openssh.com,zlib"
Damien Miller1383bd82000-04-06 12:32:37 +1000172#define KEX_DEFAULT_LANG ""
173
Damien Miller9235a032014-04-20 13:17:20 +1000174#define KEX_CLIENT \
175 KEX_CLIENT_KEX, \
176 KEX_DEFAULT_PK_ALG, \
177 KEX_CLIENT_ENCRYPT, \
178 KEX_CLIENT_ENCRYPT, \
179 KEX_CLIENT_MAC, \
180 KEX_CLIENT_MAC, \
181 KEX_DEFAULT_COMP, \
182 KEX_DEFAULT_COMP, \
183 KEX_DEFAULT_LANG, \
Damien Miller1383bd82000-04-06 12:32:37 +1000184 KEX_DEFAULT_LANG
Damien Miller9235a032014-04-20 13:17:20 +1000185
186#define KEX_SERVER \
187 KEX_SERVER_KEX, \
188 KEX_DEFAULT_PK_ALG, \
189 KEX_SERVER_ENCRYPT, \
190 KEX_SERVER_ENCRYPT, \
191 KEX_SERVER_MAC, \
192 KEX_SERVER_MAC, \
193 KEX_DEFAULT_COMP, \
194 KEX_DEFAULT_COMP, \
195 KEX_DEFAULT_LANG, \
196 KEX_DEFAULT_LANG
197