1 /*
   2  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24 
  25 /*
  26  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 
  30 /*      $OpenBSD: myproposal.h,v 1.14 2002/04/03 09:26:11 markus Exp $  */
  31 
  32 #ifndef _MYPROPOSAL_H
  33 #define _MYPROPOSAL_H
  34 
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38 
  39 
  40 #define KEX_DEFAULT_KEX                 "diffie-hellman-group-exchange-sha1," \
  41                                         "diffie-hellman-group1-sha1"
  42 
  43 #define KEX_DEFAULT_PK_ALG              "ssh-rsa,ssh-dss"
  44 
  45 /*
  46  * Keep CBC modes in the back of the client default cipher list for backward
  47  * compatibility but remove them from the server side because there are some
  48  * potential security issues with those modes regarding SSH protocol version 2.
  49  * Since the client is the one who picks the cipher from the list offered by the
  50  * server the only way to force the client not to use CBC modes is not to
  51  * advertise those at all. Note that we still support all such CBC modes in the
  52  * server code, this is about the default server cipher list only. The list can
  53  * be changed in the Ciphers option in the sshd_config(4) file.
  54  *
  55  * Note that the ordering of ciphers on the server side is not relevant but we
  56  * must do it properly even here so that we can use the macro for the client
  57  * list as well.
  58  */
  59 #define KEX_DEFAULT_SERVER_ENCRYPT      "aes128-ctr,aes192-ctr,aes256-ctr," \
  60                                         "arcfour128,arcfour256,arcfour"
  61 
  62 #define KEX_DEFAULT_CLIENT_ENCRYPT      KEX_DEFAULT_SERVER_ENCRYPT \
  63                                         ",aes128-cbc,aes192-cbc,aes256-cbc," \
  64                                         "blowfish-cbc,3des-cbc"
  65 
  66 #define KEX_DEFAULT_MAC                 "hmac-md5,hmac-sha1,hmac-sha1-96," \
  67                                         "hmac-md5-96"
  68 
  69 #define KEX_DEFAULT_COMP                "none,zlib"
  70 #define KEX_DEFAULT_LANG                ""
  71 
  72 
  73 static char *my_srv_proposal[PROPOSAL_MAX] = {
  74         KEX_DEFAULT_KEX,
  75         KEX_DEFAULT_PK_ALG,
  76         KEX_DEFAULT_SERVER_ENCRYPT,
  77         KEX_DEFAULT_SERVER_ENCRYPT,
  78         KEX_DEFAULT_MAC,
  79         KEX_DEFAULT_MAC,
  80         KEX_DEFAULT_COMP,
  81         KEX_DEFAULT_COMP,
  82         KEX_DEFAULT_LANG,
  83         KEX_DEFAULT_LANG
  84 };
  85 
  86 static char *my_clnt_proposal[PROPOSAL_MAX] = {
  87         KEX_DEFAULT_KEX,
  88         KEX_DEFAULT_PK_ALG,
  89         KEX_DEFAULT_CLIENT_ENCRYPT,
  90         KEX_DEFAULT_CLIENT_ENCRYPT,
  91         KEX_DEFAULT_MAC,
  92         KEX_DEFAULT_MAC,
  93         KEX_DEFAULT_COMP,
  94         KEX_DEFAULT_COMP,
  95         KEX_DEFAULT_LANG,
  96         KEX_DEFAULT_LANG
  97 };
  98 
  99 #ifdef __cplusplus
 100 }
 101 #endif
 102 
 103 #endif /* _MYPROPOSAL_H */