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Comparing gvpe/src/global.h (file contents):
Revision 1.20 by pcg, Tue Apr 26 00:55:56 2005 UTC vs.
Revision 1.29 by root, Thu Jul 18 13:35:16 2013 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> 3 Copyright (C) 2003-2013 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE. 5 This file is part of GVPE.
6 6
7 GVPE is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify it
8 it under the terms of the GNU General Public License as published by 8 under the terms of the GNU General Public License as published by the
9 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
10 (at your option) any later version. 10 option) any later version.
11 11
12 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful, but
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15 GNU General Public License for more details. 15 Public License for more details.
16 16
17 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License along
18 along with gvpe; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
19 Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
20*/ 30*/
21 31
22#ifndef GLOBAL_H__ 32#ifndef GLOBAL_H__
23#define GLOBAL_H__ 33#define GLOBAL_H__
24 34
25#include "config.h" 35#include "config.h"
26 36
27#include <time.h> 37#include <time.h>
28 38
39#define HASH_BITS(hash) hashbits_ ## hash
40#define HASH_SIZE(hash) (HASH_BITS (hash) >> 3)
41#define hashbits_EVP_ripemd160 160
42#define hashbits_EVP_sha1 160
43#define hashbits_EVP_sha224 224
44#define hashbits_EVP_sha256 256
45#define hashbits_EVP_sha384 384
46#define hashbits_EVP_sha512 512
47#define hashbits_EVP_whirlpool 512
48
49#define KEY_BITS(cipher) keybits_ ## cipher
50#define KEY_SIZE(cipher) (KEY_BITS (cipher) >> 3)
51#define keybits_EVP_bf_cbc 128 // actually 32-448
52#define keybits_EVP_aes_128_cbc 128
53#define keybits_EVP_aes_192_cbc 192
54#define keybits_EVP_aes_256_cbc 256
55
56#define BLOCK_BITS(cipher) blockbits_ ## cipher
57#define BLOCK_SIZE(cipher) (BLOCK_BITS (cipher) >> 3)
58#define blockbits_EVP_bf_cbc 64
59#define blockbits_EVP_aes_128_cbc 128
60#define blockbits_EVP_aes_192_cbc 128
61#define blockbits_EVP_aes_256_cbc 128
62
29/* Protocol version. Different major versions are incompatible, 63/* Protocol version. Different major versions are incompatible,
30 * different minor versions probably are compatible ;) 64 * different minor versions probably are compatible ;)
31 */ 65 */
32 66
33#define PROTOCOL_MAJOR 0 67#define PROTOCOL_MAJOR 1
34#define PROTOCOL_MINOR 1 68#define PROTOCOL_MINOR 0
35 69
36#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 70#define SEED_SIZE 64 // how many octets to seed rng with
37#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
38#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
39 71
40#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 72#define HKDF_XTR_HASH EVP_sha512
41#define RSA_HASHLEN (160 >> 3) 73#define HKDF_PRF_HASH EVP_sha256
42#define RSA_RESLEN RSA_HASHLEN
43 74
44#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 75#define HKDF_SALT 32
45#define RSA_TTL 120 // challenge bytes timeout after n seconds
46 76
47#define CIPHER ENABLE_CIPHER () 77#define RSA_KEYLEN (RSABITS >> 3)
48#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER))
49#define DIGEST ENABLE_DIGEST ()
50#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
51 78
52#define MAX_SEQNO 0xfffffff0U 79#define AUTH_DIGEST ENABLE_AUTH
80#define AUTH_SIZE (HASH_SIZE (AUTH_DIGEST))
81#define AUTH_TTL 12 // challenge bytes timeout after n seconds of non-use
53 82
54#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 83#define CIPHER ENABLE_CIPHER
55#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 84#define CIPHER_KEYSIZE (KEY_SIZE (CIPHER))
56#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
57 85
58// hdr seq len hmac MAC MAC 86#define MAC_DIGEST ENABLE_HMAC
59#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 87#define MAC_KEYSIZE HASH_SIZE (ENABLE_HMAC) // number of bits used for the HMAC key
60#define IP_OVERHEAD 20 // size of a (normal) ip header
61#define GRE_OVERHEAD (IP_OVERHEAD + 4)
62#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
63#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
64#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
65#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
66#define ETH_OVERHEAD 14 // the size of an ethernet header
67#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares
68 88
69#define PKTCACHESIZE 5 // the size of the memory pool for packets 89#define WINDOWSIZE 512 // sliding window size
90#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
70 91
71#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) 92// hdr seq len hmac MAC MAC
93#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
94#define IP_OVERHEAD 20 // size of a (normal) ip header
95#define GRE_OVERHEAD (IP_OVERHEAD + 4)
96#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
97#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
98#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
99#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
100#define ETH_OVERHEAD 14 // the size of an ethernet header
101#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares
72 102
73#define WINDOWSIZE 512 // sliding window size 103#define PKTCACHESIZE 16 // the size of the memory pool for packets
74 104
75extern char *confbase; // directory in which all config files are 105extern char *confbase; // directory in which all config files are
76extern char *thisnode; // config for current node (TODO: remove) 106extern char *thisnode; // config for current node (TODO: remove)
77 107
108template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
109template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
110template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
111template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
112
113template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
114
115template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
116
78#endif 117#endif
79 118

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