Annotation of src/usr.bin/ssh/kex.h, Revision 1.45
1.45 ! djm 1: /* $OpenBSD: kex.h,v 1.44 2006/08/03 03:34:42 deraadt 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>
1.45 ! djm 30: #include <openssl/hmac.h>
1.14 markus 31:
1.38 djm 32: #define KEX_DH1 "diffie-hellman-group1-sha1"
33: #define KEX_DH14 "diffie-hellman-group14-sha1"
34: #define KEX_DHGEX_SHA1 "diffie-hellman-group-exchange-sha1"
1.39 djm 35: #define KEX_DHGEX_SHA256 "diffie-hellman-group-exchange-sha256"
1.37 markus 36:
37: #define COMP_NONE 0
38: #define COMP_ZLIB 1
39: #define COMP_DELAYED 2
1.1 markus 40:
41: enum kex_init_proposals {
42: PROPOSAL_KEX_ALGS,
43: PROPOSAL_SERVER_HOST_KEY_ALGS,
44: PROPOSAL_ENC_ALGS_CTOS,
45: PROPOSAL_ENC_ALGS_STOC,
46: PROPOSAL_MAC_ALGS_CTOS,
47: PROPOSAL_MAC_ALGS_STOC,
48: PROPOSAL_COMP_ALGS_CTOS,
49: PROPOSAL_COMP_ALGS_STOC,
50: PROPOSAL_LANG_CTOS,
51: PROPOSAL_LANG_STOC,
52: PROPOSAL_MAX
53: };
54:
55: enum kex_modes {
56: MODE_IN,
57: MODE_OUT,
58: MODE_MAX
59: };
60:
1.5 provos 61: enum kex_exchange {
1.33 markus 62: KEX_DH_GRP1_SHA1,
1.35 djm 63: KEX_DH_GRP14_SHA1,
1.33 markus 64: KEX_DH_GEX_SHA1,
1.39 djm 65: KEX_DH_GEX_SHA256,
1.33 markus 66: KEX_MAX
1.5 provos 67: };
1.13 stevesk 68:
1.19 markus 69: #define KEX_INIT_SENT 0x0001
70:
1.1 markus 71: typedef struct Kex Kex;
72: typedef struct Mac Mac;
73: typedef struct Comp Comp;
74: typedef struct Enc Enc;
1.19 markus 75: typedef struct Newkeys Newkeys;
1.1 markus 76:
77: struct Enc {
1.19 markus 78: char *name;
79: Cipher *cipher;
80: int enabled;
1.29 markus 81: u_int key_len;
82: u_int block_size;
1.10 markus 83: u_char *key;
84: u_char *iv;
1.1 markus 85: };
86: struct Mac {
1.19 markus 87: char *name;
88: int enabled;
1.31 markus 89: const EVP_MD *md;
1.36 djm 90: u_int mac_len;
1.10 markus 91: u_char *key;
1.36 djm 92: u_int key_len;
1.45 ! djm 93: HMAC_CTX ctx;
1.1 markus 94: };
95: struct Comp {
1.19 markus 96: int type;
97: int enabled;
98: char *name;
99: };
100: struct Newkeys {
101: Enc enc;
102: Mac mac;
103: Comp comp;
1.1 markus 104: };
105: struct Kex {
1.19 markus 106: u_char *session_id;
1.32 markus 107: u_int session_id_len;
1.22 markus 108: Newkeys *newkeys[MODE_MAX];
1.36 djm 109: u_int we_need;
1.19 markus 110: int server;
111: char *name;
112: int hostkey_type;
113: int kex_type;
114: Buffer my;
115: Buffer peer;
1.42 djm 116: sig_atomic_t done;
1.19 markus 117: int flags;
1.38 djm 118: const EVP_MD *evp_md;
1.19 markus 119: char *client_version_string;
120: char *server_version_string;
1.25 itojun 121: int (*verify_host_key)(Key *);
122: Key *(*load_host_key)(int);
1.30 provos 123: int (*host_key_index)(Key *);
1.33 markus 124: void (*kex[KEX_MAX])(Kex *);
1.1 markus 125: };
126:
1.25 itojun 127: Kex *kex_setup(char *[PROPOSAL_MAX]);
1.26 markus 128: void kex_finish(Kex *);
1.20 markus 129:
1.26 markus 130: void kex_send_kexinit(Kex *);
1.28 markus 131: void kex_input_kexinit(int, u_int32_t, void *);
1.38 djm 132: void kex_derive_keys(Kex *, u_char *, u_int, BIGNUM *);
1.18 markus 133:
1.33 markus 134: Newkeys *kex_get_newkeys(int);
1.19 markus 135:
1.33 markus 136: void kexdh_client(Kex *);
137: void kexdh_server(Kex *);
138: void kexgex_client(Kex *);
139: void kexgex_server(Kex *);
140:
1.38 djm 141: void
1.33 markus 142: kex_dh_hash(char *, char *, char *, int, char *, int, u_char *, int,
1.38 djm 143: BIGNUM *, BIGNUM *, BIGNUM *, u_char **, u_int *);
144: void
145: kexgex_hash(const EVP_MD *, char *, char *, char *, int, char *,
1.40 deraadt 146: int, u_char *, int, int, int, int, BIGNUM *, BIGNUM *, BIGNUM *,
1.38 djm 147: BIGNUM *, BIGNUM *, u_char **, u_int *);
1.34 markus 148:
149: void
150: derive_ssh1_session_id(BIGNUM *, BIGNUM *, u_int8_t[8], u_int8_t[16]);
1.18 markus 151:
152: #if defined(DEBUG_KEX) || defined(DEBUG_KEXDH)
1.25 itojun 153: void dump_digest(char *, u_char *, int);
1.18 markus 154: #endif
1.1 markus 155:
156: #endif
![[BACK]](/icons/back.gif){kind=icon}
Return to kex.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh