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Comparing gvpe/src/global.h (file contents):
Revision 1.6 by pcg, Wed Mar 26 01:58:46 2003 UTC vs.
Revision 1.35 by root, Sat Sep 5 17:40:22 2015 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2013 Marc Lehmann <gvpe@schmorp.de>
3 4
5 This file is part of GVPE.
6
4 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify it
5 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
6 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
7 (at your option) any later version. 10 option) any later version.
8 11
9 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
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
12 GNU General Public License for more details. 15 Public License for more details.
13 16
14 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
15 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
16 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
17*/ 30*/
18 31
19#ifndef GLOBAL_H__ 32#ifndef GLOBAL_H__
20#define GLOBAL_H__ 33#define GLOBAL_H__
21 34
22#include "config.h" 35#include "config.h"
23 36
24#include <time.h> 37#include <time.h>
25 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
26 48
27#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 49#define KEY_BITS(cipher) keybits_ ## cipher
28#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) 50#define KEY_SIZE(cipher) (KEY_BITS (cipher) >> 3)
29#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl 51//#define keybits_EVP_bf_ctr 128 // actually 32-448
52#define keybits_EVP_aes_128_ctr 128
53#define keybits_EVP_aes_192_ctr 192
54#define keybits_EVP_aes_256_ctr 256
30 55
31#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 56#define BLOCK_BITS(cipher) blockbits_ ## cipher
32#define RSA_HASHLEN (160 >> 3) 57#define BLOCK_SIZE(cipher) (BLOCK_BITS (cipher) >> 3)
58//#define blockbits_EVP_bf_ctr 64
59#define blockbits_EVP_aes_128_ctr 8
60#define blockbits_EVP_aes_192_ctr 8
61#define blockbits_EVP_aes_256_ctr 8
33 62
34#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 63#define IV_BITS(cipher) ivbits_ ## cipher
35#define RSA_TTL 20 // challenge bytes timeout after n seconds 64#define IV_SIZE(cipher) (IV_BITS (cipher) >> 3)
65//#define ivbits_EVP_bf_ctr 64
66#define ivbits_EVP_aes_128_ctr 128
67#define ivbits_EVP_aes_192_ctr 128
68#define ivbits_EVP_aes_256_ctr 128
36 69
37#define CIPHER ENABLE_CIPHER () 70/* Protocol version. Different major versions are incompatible,
38#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 71 * different minor versions probably are compatible ;)
39#define DIGEST ENABLE_DIGEST () 72 */
40#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
41 73
42#define MAX_SEQNO 0xfffffff0U 74#define PROTOCOL_MAJOR 1
75#define PROTOCOL_MINOR 0
43 76
44#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 77#define SERIAL_SIZE 16
45#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge
46#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
47 78
48// hdr seq len hmac MAC MAC 79#define SEED_SIZE 64 // how many octets to seed rng with
49#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
50#define IP_OVERHEAD 20 // size of a (normal) ip header
51#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header
52#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol
53#define ETH_OVERHEAD 14 // the size of an ethernet header
54#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares
55 80
56#define PKTCACHESIZE 4 // the size of the memory pool for packets 81#define RSA_OAEP_SIZE 41
57 82
58#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) 83#define HKDF_XTR_HASH EVP_sha512
84#define HKDF_PRF_HASH EVP_sha256
59 85
86#define HKDF_SALT 24 // how many bytes for the hkdf salt
87
88#define RSA_KEYLEN (RSABITS >> 3)
89
90#define AUTH_DIGEST ENABLE_AUTH
91#define AUTH_SIZE (HASH_SIZE (AUTH_DIGEST))
92#define AUTH_TTL 12 // challenge bytes timeout after n seconds of non-use
93
94#define CIPHER ENABLE_CIPHER
95#define CIPHER_KEYSIZE (KEY_SIZE (CIPHER))
96#define CIPHER_IKMSIZE (CIPHER_KEYSIZE * 3 / 2) // randomness in rsa challenge
97
98#define MAC_DIGEST ENABLE_HMAC
99#define MAC_KEYSIZE HASH_SIZE (ENABLE_HMAC) // number of bits used for the HMAC key
100#define MAC_IKMSIZE (MAC_KEYSIZE * 3 / 2) // randomness in rsa challenge
101
60#define WINDOWSIZE 512 // sliding window size 102#define WINDOWSIZE 512 // sliding window size
103#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
104
105// hdr seq len hmac MAC MAC
106#define VPE_OVERHEAD (4 + 4 + 4 + HMACLENGTH - 6 - 6)
107#define IP_OVERHEAD 20 // size of a (normal) ip header
108#define GRE_OVERHEAD (IP_OVERHEAD + 4)
109#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
110#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
111#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
112#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
113#define ETH_OVERHEAD 14 // the size of an ethernet header
114#define MAXSIZE (MAX_MTU + IP_OVERHEAD) // slightly too large, but who cares
115
116#define PKTCACHESIZE 128 // the size of the memory pool for packets
61 117
62extern char *confbase; // directory in which all config files are 118extern char *confbase; // directory in which all config files are
63extern char *thisnode; // config for current node (TODO: remove) 119extern char *thisnode; // config for current node (TODO: remove)
64extern char *pidfilename; // pid file location 120
121template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
122template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
123template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
124template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
125
126template<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; }
127
128template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
65 129
66#endif 130#endif
67 131

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