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Comparing gvpe/src/global.h (file contents):
Revision 1.24 by pcg, Thu Aug 7 17:54:27 2008 UTC vs.
Revision 1.36 by root, Wed Mar 30 04:02:45 2016 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2008 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 it 7 GVPE is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the 8 under the terms of the GNU General Public License as published by the
… …
34 34
35#include "config.h" 35#include "config.h"
36 36
37#include <time.h> 37#include <time.h>
38 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_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
55
56#define BLOCK_BITS(cipher) blockbits_ ## cipher
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
62
63#define IV_BITS(cipher) ivbits_ ## cipher
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
69
39/* Protocol version. Different major versions are incompatible, 70/* Protocol version. Different major versions are incompatible,
40 * different minor versions probably are compatible ;) 71 * different minor versions probably are compatible ;)
41 */ 72 */
42 73
43#define PROTOCOL_MAJOR 0 74#define PROTOCOL_MAJOR 1
44#define PROTOCOL_MINOR 1 75#define PROTOCOL_MINOR 0
45 76
46#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 77#define SERIAL_SIZE 16
47#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
48#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
49 78
50#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 79#define SEED_SIZE 64 // how many octets to seed rng with
51#define RSA_HASHLEN (160 >> 3)
52#define RSA_RESLEN RSA_HASHLEN
53 80
54#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 81#define RSA_OAEP_SIZE 41
55#define RSA_TTL 120 // challenge bytes timeout after n seconds
56 82
57#define CIPHER ENABLE_CIPHER () 83#define HKDF_XTR_HASH EVP_sha512
58#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 84#define HKDF_PRF_HASH EVP_sha256
59#define DIGEST ENABLE_DIGEST ()
60#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
61 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
62#define WINDOWSIZE 512 // sliding window size 102#define WINDOWSIZE 65536 // sliding window size
63#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8) 103#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
64 104
65#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge
66#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge
67#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
68
69// hdr seq len hmac MAC MAC 105// hdr seq len hmac MAC MAC
70#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 106#define VPE_OVERHEAD (4 + 4 + 4 + HMACLENGTH - 6 - 6)
71#define IP_OVERHEAD 20 // size of a (normal) ip header 107#define IP_OVERHEAD 20 // size of a (normal) ip header
72#define GRE_OVERHEAD (IP_OVERHEAD + 4) 108#define GRE_OVERHEAD (IP_OVERHEAD + 4)
73#define ICMP_OVERHEAD (IP_OVERHEAD + 4) 109#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
74#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) 110#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
75#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength 111#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
76#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) 112#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
77#define ETH_OVERHEAD 14 // the size of an ethernet header 113#define ETH_OVERHEAD 14 // the size of an ethernet header
78#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares 114#define MAXSIZE (MAX_MTU + IP_OVERHEAD) // slightly too large, but who cares
79 115
80#define PKTCACHESIZE 16 // the size of the memory pool for packets 116#define PKTCACHESIZE 128 // the size of the memory pool for packets
81 117
82extern char *confbase; // directory in which all config files are 118extern char *confbase; // directory in which all config files are
83extern char *thisnode; // config for current node (TODO: remove) 119extern char *thisnode; // config for current node (TODO: remove)
84 120
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; }
129
85#endif 130#endif
86 131

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