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openssh/kex.h
Ben Lindstrom 4cc240dabb - markus@cvs.openbsd.org 2001/06/26 17:27:25
[authfd.h authfile.h auth.h auth-options.h bufaux.h buffer.h
      canohost.h channels.h cipher.h clientloop.h compat.h compress.h
      crc32.h deattack.h dh.h dispatch.h groupaccess.c groupaccess.h
      hostfile.h kex.h key.h log.c log.h mac.h misc.c misc.h mpaux.h
      packet.h radix.h readconf.h readpass.h rsa.h servconf.h serverloop.h
      session.h sftp-common.c sftp-common.h sftp-glob.h sftp-int.h
      sshconnect.h ssh-dss.h sshlogin.h sshpty.h ssh-rsa.h sshtty.h
      tildexpand.h uidswap.h uuencode.h xmalloc.h]
     remove comments from .h, since they are cut&paste from the .c files
     and out of sync
2001-07-04 04:46:56 +00:00

131 lines
3.1 KiB
C

/* $OpenBSD: kex.h,v 1.26 2001/06/26 17:27:23 markus Exp $ */
/*
* Copyright (c) 2000, 2001 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.
*/
#ifndef KEX_H
#define KEX_H
#include <openssl/evp.h>
#include "buffer.h"
#include "cipher.h"
#include "key.h"
#define KEX_DH1 "diffie-hellman-group1-sha1"
#define KEX_DHGEX "diffie-hellman-group-exchange-sha1"
enum kex_init_proposals {
PROPOSAL_KEX_ALGS,
PROPOSAL_SERVER_HOST_KEY_ALGS,
PROPOSAL_ENC_ALGS_CTOS,
PROPOSAL_ENC_ALGS_STOC,
PROPOSAL_MAC_ALGS_CTOS,
PROPOSAL_MAC_ALGS_STOC,
PROPOSAL_COMP_ALGS_CTOS,
PROPOSAL_COMP_ALGS_STOC,
PROPOSAL_LANG_CTOS,
PROPOSAL_LANG_STOC,
PROPOSAL_MAX
};
enum kex_modes {
MODE_IN,
MODE_OUT,
MODE_MAX
};
enum kex_exchange {
DH_GRP1_SHA1,
DH_GEX_SHA1
};
#define KEX_INIT_SENT 0x0001
typedef struct Kex Kex;
typedef struct Mac Mac;
typedef struct Comp Comp;
typedef struct Enc Enc;
typedef struct Newkeys Newkeys;
struct Enc {
char *name;
Cipher *cipher;
int enabled;
u_char *key;
u_char *iv;
};
struct Mac {
char *name;
int enabled;
EVP_MD *md;
int mac_len;
u_char *key;
int key_len;
};
struct Comp {
int type;
int enabled;
char *name;
};
struct Newkeys {
Enc enc;
Mac mac;
Comp comp;
};
struct Kex {
u_char *session_id;
int session_id_len;
Newkeys *newkeys[MODE_MAX];
int we_need;
int server;
char *name;
int hostkey_type;
int kex_type;
Buffer my;
Buffer peer;
int done;
int flags;
char *client_version_string;
char *server_version_string;
int (*verify_host_key)(Key *);
Key *(*load_host_key)(int);
};
Kex *kex_setup(char *[PROPOSAL_MAX]);
void kex_finish(Kex *);
void kex_send_kexinit(Kex *);
void kex_input_kexinit(int, int, void *);
void kex_derive_keys(Kex *, u_char *, BIGNUM *);
void kexdh(Kex *);
void kexgex(Kex *);
Newkeys *kex_get_newkeys(int);
#if defined(DEBUG_KEX) || defined(DEBUG_KEXDH)
void dump_digest(char *, u_char *, int);
#endif
#endif