andersk Git - gssapi-openssh.git/blame_incremental

... / ...

Commit	Line	Data
	1	/* $OpenBSD: kex.h,v 1.38 2005/11/04 05:15:59 djm Exp $ */
	2
	3	/*
	4	* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	*
	15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	16	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	17	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	18	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	19	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	20	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	21	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	22	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	23	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	24	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	25	*/
	26	#ifndef KEX_H
	27	#define KEX_H
	28
	29	#include <openssl/evp.h>
	30	#include "buffer.h"
	31	#include "cipher.h"
	32	#include "key.h"
	33
	34	#define KEX_DH1 "diffie-hellman-group1-sha1"
	35	#define KEX_DH14 "diffie-hellman-group14-sha1"
	36	#define KEX_DHGEX_SHA1 "diffie-hellman-group-exchange-sha1"
	37
	38	#define COMP_NONE 0
	39	#define COMP_ZLIB 1
	40	#define COMP_DELAYED 2
	41
	42	enum kex_init_proposals {
	43	PROPOSAL_KEX_ALGS,
	44	PROPOSAL_SERVER_HOST_KEY_ALGS,
	45	PROPOSAL_ENC_ALGS_CTOS,
	46	PROPOSAL_ENC_ALGS_STOC,
	47	PROPOSAL_MAC_ALGS_CTOS,
	48	PROPOSAL_MAC_ALGS_STOC,
	49	PROPOSAL_COMP_ALGS_CTOS,
	50	PROPOSAL_COMP_ALGS_STOC,
	51	PROPOSAL_LANG_CTOS,
	52	PROPOSAL_LANG_STOC,
	53	PROPOSAL_MAX
	54	};
	55
	56	enum kex_modes {
	57	MODE_IN,
	58	MODE_OUT,
	59	MODE_MAX
	60	};
	61
	62	enum kex_exchange {
	63	KEX_DH_GRP1_SHA1,
	64	KEX_DH_GRP14_SHA1,
	65	KEX_DH_GEX_SHA1,
	66	KEX_GSS_GRP1_SHA1,
	67	KEX_GSS_GEX_SHA1,
	68	KEX_MAX
	69	};
	70
	71	#define KEX_INIT_SENT 0x0001
	72
	73	typedef struct Kex Kex;
	74	typedef struct Mac Mac;
	75	typedef struct Comp Comp;
	76	typedef struct Enc Enc;
	77	typedef struct Newkeys Newkeys;
	78
	79	struct Enc {
	80	char *name;
	81	Cipher *cipher;
	82	int enabled;
	83	u_int key_len;
	84	u_int block_size;
	85	u_char *key;
	86	u_char *iv;
	87	};
	88	struct Mac {
	89	char *name;
	90	int enabled;
	91	const EVP_MD *md;
	92	u_int mac_len;
	93	u_char *key;
	94	u_int key_len;
	95	};
	96	struct Comp {
	97	int type;
	98	int enabled;
	99	char *name;
	100	};
	101	struct Newkeys {
	102	Enc enc;
	103	Mac mac;
	104	Comp comp;
	105	};
	106
	107	struct Kex {
	108	u_char *session_id;
	109	u_int session_id_len;
	110	Newkeys *newkeys[MODE_MAX];
	111	u_int we_need;
	112	int server;
	113	char *name;
	114	int hostkey_type;
	115	int kex_type;
	116	Buffer my;
	117	Buffer peer;
	118	int done;
	119	int flags;
	120	const EVP_MD *evp_md;
	121	#ifdef GSSAPI
	122	int gss_deleg_creds;
	123	int gss_trust_dns;
	124	char *gss_host;
	125	#endif
	126	char *client_version_string;
	127	char *server_version_string;
	128	int (verify_host_key)(Key );
	129	Key (load_host_key)(int);
	130	int (host_key_index)(Key );
	131	void (kex[KEX_MAX])(Kex );
	132	};
	133
	134	void kex_prop2buf(Buffer , char proposal[PROPOSAL_MAX]);
	135
	136	Kex kex_setup(char [PROPOSAL_MAX]);
	137	void kex_finish(Kex *);
	138
	139	void kex_send_kexinit(Kex *);
	140	void kex_input_kexinit(int, u_int32_t, void *);
	141	void kex_derive_keys(Kex , u_char , u_int, BIGNUM *);
	142
	143	Newkeys *kex_get_newkeys(int);
	144
	145	void kexdh_client(Kex *);
	146	void kexdh_server(Kex *);
	147	void kexgex_client(Kex *);
	148	void kexgex_server(Kex *);
	149
	150	#ifdef GSSAPI
	151	void kexgss_client(Kex *);
	152	void kexgss_server(Kex *);
	153	#endif
	154
	155	void
	156	kex_dh_hash(char , char , char , int, char , int, u_char *, int,
	157	BIGNUM , BIGNUM , BIGNUM , u_char , u_int );
	158	void
	159	kexgex_hash(const EVP_MD , char , char , char , int, char *,
	160	int, u_char , int, int, int, int, BIGNUM , BIGNUM , BIGNUM ,
	161	BIGNUM , BIGNUM , u_char *, u_int );
	162
	163	void
	164	derive_ssh1_session_id(BIGNUM , BIGNUM , u_int8_t[8], u_int8_t[16]);
	165
	166	#if defined(DEBUG_KEX) \|\| defined(DEBUG_KEXDH)
	167	void dump_digest(char , u_char , int);
	168	#endif
	169
	170	#endif