/* $OpenBSD: myproposal.h,v 1.65 2020/01/22 04:58:23 tedu 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. */ #ifdef WITH_OPENSSL #include #endif /* 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 \ "ecdsa-sha2-nistp256-cert-v01@openssh.com," \ "ecdsa-sha2-nistp384-cert-v01@openssh.com," \ "ecdsa-sha2-nistp521-cert-v01@openssh.com," \ "sk-ecdsa-sha2-nistp256-cert-v01@openssh.com," # define HOSTKEY_ECDSA_METHODS \ "ecdsa-sha2-nistp256," \ "ecdsa-sha2-nistp384," \ "ecdsa-sha2-nistp521," \ "sk-ecdsa-sha2-nistp256@openssh.com," # else /* OPENSSL_HAS_NISTP521 */ # define KEX_ECDH_METHODS \ "ecdh-sha2-nistp256," \ "ecdh-sha2-nistp384," # define HOSTKEY_ECDSA_CERT_METHODS \ "ecdsa-sha2-nistp256-cert-v01@openssh.com," \ "ecdsa-sha2-nistp384-cert-v01@openssh.com," \ "sk-ecdsa-sha2-nistp256-cert-v01@openssh.com," # define HOSTKEY_ECDSA_METHODS \ "ecdsa-sha2-nistp256," \ "ecdsa-sha2-nistp384," \ "sk-ecdsa-sha2-nistp256@openssh.com," # endif /* OPENSSL_HAS_NISTP521 */ #else /* OPENSSL_HAS_ECC */ # define KEX_ECDH_METHODS # define HOSTKEY_ECDSA_CERT_METHODS # define HOSTKEY_ECDSA_METHODS #endif /* OPENSSL_HAS_ECC */ #ifdef OPENSSL_HAVE_EVPGCM # define AESGCM_CIPHER_MODES \ ",aes128-gcm@openssh.com,aes256-gcm@openssh.com" #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," \ "curve25519-sha256@libssh.org," # else # define KEX_CURVE25519_METHODS "" # endif #define KEX_SERVER_KEX \ KEX_CURVE25519_METHODS \ KEX_ECDH_METHODS \ KEX_SHA2_METHODS \ KEX_SHA2_GROUP14 #define KEX_CLIENT_KEX KEX_SERVER_KEX #define KEX_DEFAULT_PK_ALG \ HOSTKEY_ECDSA_CERT_METHODS \ "ssh-ed25519-cert-v01@openssh.com," \ "sk-ssh-ed25519-cert-v01@openssh.com," \ "rsa-sha2-512-cert-v01@openssh.com," \ "rsa-sha2-256-cert-v01@openssh.com," \ "ssh-rsa-cert-v01@openssh.com," \ HOSTKEY_ECDSA_METHODS \ "ssh-ed25519," \ "sk-ssh-ed25519@openssh.com," \ "rsa-sha2-512," \ "rsa-sha2-256," \ "ssh-rsa" /* the actual algorithms */ #define KEX_SERVER_ENCRYPT \ "chacha20-poly1305@openssh.com," \ "aes128-ctr,aes192-ctr,aes256-ctr" \ AESGCM_CIPHER_MODES #define KEX_CLIENT_ENCRYPT KEX_SERVER_ENCRYPT #define KEX_SERVER_MAC \ "umac-64-etm@openssh.com," \ "umac-128-etm@openssh.com," \ "hmac-sha2-256-etm@openssh.com," \ "hmac-sha2-512-etm@openssh.com," \ "hmac-sha1-etm@openssh.com," \ "umac-64@openssh.com," \ "umac-128@openssh.com," \ "hmac-sha2-256," \ "hmac-sha2-512," \ "hmac-sha1" #define KEX_CLIENT_MAC KEX_SERVER_MAC /* Not a KEX value, but here so all the algorithm defaults are together */ #define SSH_ALLOWED_CA_SIGALGS \ HOSTKEY_ECDSA_METHODS \ "ssh-ed25519," \ "sk-ssh-ed25519@openssh.com," \ "rsa-sha2-512," \ "rsa-sha2-256," \ "ssh-rsa" #else /* WITH_OPENSSL */ #define KEX_SERVER_KEX \ "curve25519-sha256," \ "curve25519-sha256@libssh.org" #define KEX_DEFAULT_PK_ALG \ "ssh-ed25519-cert-v01@openssh.com," \ "ssh-ed25519" #define KEX_SERVER_ENCRYPT \ "chacha20-poly1305@openssh.com," \ "aes128-ctr,aes192-ctr,aes256-ctr" #define KEX_SERVER_MAC \ "umac-64-etm@openssh.com," \ "umac-128-etm@openssh.com," \ "hmac-sha2-256-etm@openssh.com," \ "hmac-sha2-512-etm@openssh.com," \ "hmac-sha1-etm@openssh.com," \ "umac-64@openssh.com," \ "umac-128@openssh.com," \ "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 #define SSH_ALLOWED_CA_SIGALGS "ssh-ed25519,sk-ssh-ed25519@openssh.com" #endif /* WITH_OPENSSL */ #define KEX_DEFAULT_COMP "none,zlib@openssh.com" #define KEX_DEFAULT_LANG "" #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