diff options
Diffstat (limited to 'cryptopANT.h')
| -rw-r--r-- | cryptopANT.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/cryptopANT.h b/cryptopANT.h new file mode 100644 index 0000000..63bab97 --- /dev/null +++ b/cryptopANT.h @@ -0,0 +1,91 @@ +/* -*- Mode:C; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ +/* + * Copyright (C) 2004-2018 by the University of Southern California + * $Id: 58a4704e7a2580bed5f7eac76cd23b809dd558fa $ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + * + */ + + +#ifndef _SCRAMBLE_CRYPT_H +#define _SCRAMBLE_CRYPT_H + +#ifdef __cplusplus +extern "C" { +#endif + +#define ETHER_ADDR_LEN 6 +#define ETHER_VLAN_LEN 2 + +#define _XOR16(a, b, i) (((uint16_t *)(a))[i] ^= ((uint16_t *)(b))[i]) +#define _XOR32(a, b, i) (((uint32_t *)(a))[i] ^= ((uint32_t *)(b))[i]) + +#define SCRAMBLE_ETHER_ADDR(a) if (1) { \ + _XOR32(a, scramble_ether_addr, 0); \ + _XOR16(a, scramble_ether_addr, 2); \ + } + +#define SCRAMBLE_ETHER_VLAN(v) ((v) ^= scramble_ether_vlan); + +#define SCRAMBLE_RANDOM_DEV "/dev/urandom" + +typedef enum { + SCRAMBLE_NONE = 0x00, + SCRAMBLE_MD5 = 0x01, + SCRAMBLE_BLOWFISH = 0x02, + SCRAMBLE_AES = 0x03, + SCRAMBLE_SHA1 = 0x04 +} scramble_crypt_t; + +typedef struct { + scramble_crypt_t c4; + scramble_crypt_t c6; + u_char *key; + int klen; + u_char *pad; + int plen; + u_char *mac; + int mlen; + u_char *iv; + int ivlen; +} scramble_state_t; + +/* external vars exported by mac scrambling macros */ +extern uint8_t scramble_ether_addr[ETHER_ADDR_LEN]; +extern uint16_t scramble_ether_vlan; +extern int scramble_mac; /* 0/1 */ + +/* public functions */ +extern scramble_crypt_t scramble_crypto_ip4 (void); +extern scramble_crypt_t scramble_crypto_ip6 (void); +extern scramble_crypt_t scramble_name2type (const char *); +extern const char* scramble_type2name (scramble_crypt_t); +extern int scramble_newkey (u_char *, int); +extern int scramble_newpad (u_char *, int); +extern int scramble_newmac (u_char *, int); +extern int scramble_readstate (const char *, scramble_state_t *); +extern int scramble_savestate (const char *, const scramble_state_t *); +extern int scramble_init (const scramble_state_t *s); +extern int scramble_init_from_file (const char *, scramble_crypt_t, scramble_crypt_t, int *); +extern uint32_t scramble_ip4 (uint32_t, int); +extern uint32_t unscramble_ip4 (uint32_t, int); +extern void scramble_ip6 (struct in6_addr *, int); +extern void unscramble_ip6 (struct in6_addr *, int); + +#ifdef __cplusplus +} +#endif + +#endif /* _SCRAMBLE_CRYPT_H */ |