Annotation of src/usr.bin/ssh/kex.h, Revision 1.32.2.2
1.32.2.1 margarid 1: /* $OpenBSD: kex.h,v 1.33 2003/02/16 17:09:57 markus Exp $ */
1.12 niklas 2:
1.1 markus 3: /*
1.24 markus 4: * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
1.1 markus 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:
1.14 markus 29: #include <openssl/evp.h>
30: #include "buffer.h"
1.18 markus 31: #include "cipher.h"
32: #include "key.h"
1.14 markus 33:
1.5 provos 34: #define KEX_DH1 "diffie-hellman-group1-sha1"
35: #define KEX_DHGEX "diffie-hellman-group-exchange-sha1"
1.1 markus 36:
37: enum kex_init_proposals {
38: PROPOSAL_KEX_ALGS,
39: PROPOSAL_SERVER_HOST_KEY_ALGS,
40: PROPOSAL_ENC_ALGS_CTOS,
41: PROPOSAL_ENC_ALGS_STOC,
42: PROPOSAL_MAC_ALGS_CTOS,
43: PROPOSAL_MAC_ALGS_STOC,
44: PROPOSAL_COMP_ALGS_CTOS,
45: PROPOSAL_COMP_ALGS_STOC,
46: PROPOSAL_LANG_CTOS,
47: PROPOSAL_LANG_STOC,
48: PROPOSAL_MAX
49: };
50:
51: enum kex_modes {
52: MODE_IN,
53: MODE_OUT,
54: MODE_MAX
55: };
56:
1.5 provos 57: enum kex_exchange {
1.32.2.1 margarid 58: KEX_DH_GRP1_SHA1,
59: KEX_DH_GEX_SHA1,
60: KEX_MAX
1.5 provos 61: };
1.13 stevesk 62:
1.19 markus 63: #define KEX_INIT_SENT 0x0001
64:
1.1 markus 65: typedef struct Kex Kex;
66: typedef struct Mac Mac;
67: typedef struct Comp Comp;
68: typedef struct Enc Enc;
1.19 markus 69: typedef struct Newkeys Newkeys;
1.1 markus 70:
71: struct Enc {
1.19 markus 72: char *name;
73: Cipher *cipher;
74: int enabled;
1.29 markus 75: u_int key_len;
76: u_int block_size;
1.10 markus 77: u_char *key;
78: u_char *iv;
1.1 markus 79: };
80: struct Mac {
1.19 markus 81: char *name;
82: int enabled;
1.31 markus 83: const EVP_MD *md;
1.19 markus 84: int mac_len;
1.10 markus 85: u_char *key;
1.19 markus 86: int key_len;
1.1 markus 87: };
88: struct Comp {
1.19 markus 89: int type;
90: int enabled;
91: char *name;
92: };
93: struct Newkeys {
94: Enc enc;
95: Mac mac;
96: Comp comp;
1.1 markus 97: };
98: struct Kex {
1.19 markus 99: u_char *session_id;
1.32 markus 100: u_int session_id_len;
1.22 markus 101: Newkeys *newkeys[MODE_MAX];
1.19 markus 102: int we_need;
103: int server;
104: char *name;
105: int hostkey_type;
106: int kex_type;
107: Buffer my;
108: Buffer peer;
1.22 markus 109: int done;
1.19 markus 110: int flags;
111: char *client_version_string;
112: char *server_version_string;
1.25 itojun 113: int (*verify_host_key)(Key *);
114: Key *(*load_host_key)(int);
1.30 provos 115: int (*host_key_index)(Key *);
1.32.2.1 margarid 116: void (*kex[KEX_MAX])(Kex *);
1.1 markus 117: };
118:
1.25 itojun 119: Kex *kex_setup(char *[PROPOSAL_MAX]);
1.26 markus 120: void kex_finish(Kex *);
1.20 markus 121:
1.26 markus 122: void kex_send_kexinit(Kex *);
1.28 markus 123: void kex_input_kexinit(int, u_int32_t, void *);
1.26 markus 124: void kex_derive_keys(Kex *, u_char *, BIGNUM *);
1.18 markus 125:
1.25 itojun 126: Newkeys *kex_get_newkeys(int);
1.32.2.1 margarid 127:
128: void kexdh_client(Kex *);
129: void kexdh_server(Kex *);
130: void kexgex_client(Kex *);
131: void kexgex_server(Kex *);
132:
133: u_char *
134: kex_dh_hash(char *, char *, char *, int, char *, int, u_char *, int,
135: BIGNUM *, BIGNUM *, BIGNUM *);
136: u_char *
137: kexgex_hash(char *, char *, char *, int, char *, int, u_char *, int,
138: int, int, int, BIGNUM *, BIGNUM *, BIGNUM *, BIGNUM *, BIGNUM *);
1.18 markus 139:
140: #if defined(DEBUG_KEX) || defined(DEBUG_KEXDH)
1.25 itojun 141: void dump_digest(char *, u_char *, int);
1.18 markus 142: #endif
1.1 markus 143:
144: #endif