| 1 | /* Magic numbers used within secnet */ |
| 2 | /* |
| 3 | * This file is part of secnet. |
| 4 | * See README for full list of copyright holders. |
| 5 | * |
| 6 | * secnet is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * secnet is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * version 3 along with secnet; if not, see |
| 18 | * https://www.gnu.org/licenses/gpl.html. |
| 19 | */ |
| 20 | |
| 21 | #ifndef magic_h |
| 22 | #define magic_h |
| 23 | |
| 24 | #define LABEL_NAK 0x00000000 |
| 25 | #define LABEL_MSG0 0x00020200 |
| 26 | #define LABEL_MSG1 0x01010101 |
| 27 | #define LABEL_MSG2 0x02020202 |
| 28 | #define LABEL_MSG3 0x03030303 |
| 29 | #define LABEL_MSG3BIS 0x13030313 |
| 30 | #define LABEL_MSG4 0x04040404 |
| 31 | #define LABEL_MSG5 0x05050505 |
| 32 | #define LABEL_MSG6 0x06060606 |
| 33 | #define LABEL_MSG7 0x07070707 |
| 34 | #define LABEL_MSG8 0x08080808 |
| 35 | #define LABEL_MSG9 0x09090909 |
| 36 | #define LABEL_PROD 0x0a0a0a0a |
| 37 | |
| 38 | /* uses of the 32-bit capability bitmap */ |
| 39 | #define CAPAB_EARLY CAPAB_PRIORITY_MOBILE |
| 40 | #define CAPAB_TRANSFORM_MASK 0x0000ffff |
| 41 | #define CAPAB_PRIORITY_MOBILE 0x80000000 /* mobile site has MSG1 priority */ |
| 42 | /* remaining bits are unused */ |
| 43 | |
| 44 | /* |
| 45 | * The capability mask is a set of bits, one for each optional feature |
| 46 | * supported. The capability numbers for transforms are set in the |
| 47 | * configuration (and should correspond between the two sites), although |
| 48 | * there are sensible defaults. |
| 49 | * |
| 50 | * Advertising a nonzero capability mask promises that the receiver |
| 51 | * understands LABEL_MSG3BIS messages, which contain an additional byte |
| 52 | * specifying the transform capability number actually chosen by the MSG3 |
| 53 | * sender. |
| 54 | * |
| 55 | * Aside from that, an empty bitmask is treated the same as |
| 56 | * 1u<<CAPAB_BIT_ANCIENTTRANSFORM |
| 57 | */ |
| 58 | |
| 59 | /* bit indices, 0 is ls bit */ |
| 60 | #define CAPAB_BIT_USER_MIN 0 |
| 61 | #define CAPAB_BIT_USER_MAX 7 |
| 62 | #define CAPAB_BIT_SERPENT256CBC 8 |
| 63 | #define CAPAB_BIT_EAXSERPENT 9 |
| 64 | #define CAPAB_BIT_MAX 15 |
| 65 | |
| 66 | #define CAPAB_BIT_ANCIENTTRANSFORM CAPAB_BIT_SERPENT256CBC |
| 67 | |
| 68 | #endif /* magic_h */ |