myproposal.h

/* $OpenBSD: myproposal.h,v 1.54 2016/09/28 16:33:07 djm Exp $ */

/*
 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <openssl/opensslv.h>

/* conditional algorithm support */

#ifdef OPENSSL_HAS_ECC
#ifdef OPENSSL_HAS_NISTP521
# define KEX_ECDH_METHODS \
    "ecdh-sha2-nistp256," \
    "ecdh-sha2-nistp384," \
    "ecdh-sha2-nistp521,"
# define HOSTKEY_ECDSA_CERT_METHODS \
    "[email protected]," \
    "[email protected]," \
    "[email protected],"
# define HOSTKEY_ECDSA_METHODS \
    "ecdsa-sha2-nistp256," \
    "ecdsa-sha2-nistp384," \
    "ecdsa-sha2-nistp521,"
#else
# define KEX_ECDH_METHODS \
    "ecdh-sha2-nistp256," \
    "ecdh-sha2-nistp384,"
# define HOSTKEY_ECDSA_CERT_METHODS \
    "[email protected]," \
    "[email protected],"
# define HOSTKEY_ECDSA_METHODS \
    "ecdsa-sha2-nistp256," \
    "ecdsa-sha2-nistp384,"
#endif
#else
# define KEX_ECDH_METHODS
# define HOSTKEY_ECDSA_CERT_METHODS
# define HOSTKEY_ECDSA_METHODS
#endif

#ifdef OPENSSL_HAVE_EVPGCM
# define AESGCM_CIPHER_MODES \
    ",[email protected],[email protected]"
#else
# define AESGCM_CIPHER_MODES
#endif

#ifdef HAVE_EVP_SHA256
# define KEX_SHA2_METHODS \
    "diffie-hellman-group-exchange-sha256," \
    "diffie-hellman-group16-sha512," \
    "diffie-hellman-group18-sha512,"
# define KEX_SHA2_GROUP14 \
    "diffie-hellman-group14-sha256,"
#define SHA2_HMAC_MODES \
    "hmac-sha2-256," \
    "hmac-sha2-512,"
#else
# define KEX_SHA2_METHODS
# define KEX_SHA2_GROUP14
# define SHA2_HMAC_MODES
#endif

#ifdef WITH_OPENSSL
# ifdef HAVE_EVP_SHA256
#  define KEX_CURVE25519_METHODS \
    "curve25519-sha256," \
    "[email protected],"
# else
#  define KEX_CURVE25519_METHODS ""
# endif
#define KEX_COMMON_KEX \
    KEX_CURVE25519_METHODS \
    KEX_ECDH_METHODS \
    KEX_SHA2_METHODS

#define KEX_SERVER_KEX KEX_COMMON_KEX \
    KEX_SHA2_GROUP14 \
    "diffie-hellman-group14-sha1" \

#define KEX_CLIENT_KEX KEX_COMMON_KEX \
    "diffie-hellman-group-exchange-sha1," \
    KEX_SHA2_GROUP14 \
    "diffie-hellman-group14-sha1"

#define KEX_DEFAULT_PK_ALG  \
    HOSTKEY_ECDSA_CERT_METHODS \
    "[email protected]," \
    "[email protected]," \
    HOSTKEY_ECDSA_METHODS \
    "ssh-ed25519," \
    "rsa-sha2-512," \
    "rsa-sha2-256," \
    "ssh-rsa"

/* the actual algorithms */

#define KEX_SERVER_ENCRYPT \
    "[email protected]," \
    "aes128-ctr,aes192-ctr,aes256-ctr" \
    AESGCM_CIPHER_MODES

#define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT "," \
    "aes128-cbc,aes192-cbc,aes256-cbc"

#define KEX_ENCRYPT_INCLUDE_NONE KEX_SERVER_ENCRYPT \
    ",none"

#define KEX_SERVER_MAC \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "hmac-sha2-256," \
    "hmac-sha2-512," \
    "hmac-sha1"

#define KEX_CLIENT_MAC KEX_SERVER_MAC

#else /* WITH_OPENSSL */

#define KEX_SERVER_KEX      \
    "curve25519-sha256," \
    "[email protected]"
#define KEX_DEFAULT_PK_ALG  \
    "[email protected]," \
    "ssh-ed25519"
#define KEX_SERVER_ENCRYPT \
    "[email protected]," \
    "aes128-ctr,aes192-ctr,aes256-ctr"
#define KEX_SERVER_MAC \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "[email protected]," \
    "hmac-sha2-256," \
    "hmac-sha2-512," \
    "hmac-sha1"

#define KEX_CLIENT_KEX KEX_SERVER_KEX
#define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT
#define KEX_CLIENT_MAC KEX_SERVER_MAC

#endif /* WITH_OPENSSL */

#define KEX_DEFAULT_COMP    "none,[email protected]"
#define KEX_DEFAULT_LANG    ""

#define KEX_ENCRYPT_INCLUDE_NONE KEX_SERVER_ENCRYPT ",none"

#define KEX_CLIENT \
    KEX_CLIENT_KEX, \
    KEX_DEFAULT_PK_ALG, \
    KEX_CLIENT_ENCRYPT, \
    KEX_CLIENT_ENCRYPT, \
    KEX_CLIENT_MAC, \
    KEX_CLIENT_MAC, \
    KEX_DEFAULT_COMP, \
    KEX_DEFAULT_COMP, \
    KEX_DEFAULT_LANG, \
    KEX_DEFAULT_LANG

#define KEX_SERVER \
    KEX_SERVER_KEX, \
    KEX_DEFAULT_PK_ALG, \
    KEX_SERVER_ENCRYPT, \
    KEX_SERVER_ENCRYPT, \
    KEX_SERVER_MAC, \
    KEX_SERVER_MAC, \
    KEX_DEFAULT_COMP, \
    KEX_DEFAULT_COMP, \
    KEX_DEFAULT_LANG, \
    KEX_DEFAULT_LANG