1 /* $OpenBSD: myproposal.h,v 1.56 2018/07/03 11:39:54 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 \
89 "curve25519-sha256," \
90 "curve25519-sha256@libssh.org,"
92 # define KEX_CURVE25519_METHODS ""
94 #define KEX_COMMON_KEX \
95 KEX_CURVE25519_METHODS \
99 #define KEX_SERVER_KEX KEX_COMMON_KEX \
101 "diffie-hellman-group14-sha1" \
103 #define KEX_CLIENT_KEX KEX_COMMON_KEX \
104 "diffie-hellman-group-exchange-sha1," \
106 "diffie-hellman-group14-sha1"
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 \
120 /* the actual algorithms */
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"
128 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
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," \
142 #define KEX_CLIENT_MAC KEX_SERVER_MAC
144 #else /* WITH_OPENSSL */
146 #define KEX_SERVER_KEX \
147 "curve25519-sha256," \
148 "curve25519-sha256@libssh.org"
149 #define KEX_DEFAULT_PK_ALG \
150 "ssh-ed25519-cert-v01@openssh.com," \
152 #define KEX_SERVER_ENCRYPT \
153 "chacha20-poly1305@openssh.com," \
154 "aes128-ctr,aes192-ctr,aes256-ctr"
155 #define KEX_SERVER_MAC \
156 "umac-64-etm@openssh.com," \
157 "umac-128-etm@openssh.com," \
158 "hmac-sha2-256-etm@openssh.com," \
159 "hmac-sha2-512-etm@openssh.com," \
160 "hmac-sha1-etm@openssh.com," \
161 "umac-64@openssh.com," \
162 "umac-128@openssh.com," \
167 #define KEX_CLIENT_KEX KEX_SERVER_KEX
168 #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
169 #define KEX_CLIENT_MAC KEX_SERVER_MAC
171 #endif /* WITH_OPENSSL */
173 #define KEX_DEFAULT_COMP "none,zlib@openssh.com"
174 #define KEX_DEFAULT_LANG ""
178 KEX_DEFAULT_PK_ALG, \
179 KEX_CLIENT_ENCRYPT, \
180 KEX_CLIENT_ENCRYPT, \
190 KEX_DEFAULT_PK_ALG, \
191 KEX_SERVER_ENCRYPT, \
192 KEX_SERVER_ENCRYPT, \