| /* |
| * --------------------------------------------------------------------------- |
| * Copyright (c) 1998-2007, Brian Gladman, Worcester, UK. All rights reserved. |
| * |
| * LICENSE TERMS |
| * |
| * The free distribution and use of this software is allowed (with or without |
| * changes) provided that: |
| * |
| * 1. source code distributions include the above copyright notice, this |
| * list of conditions and the following disclaimer; |
| * |
| * 2. binary distributions include the above copyright notice, this list |
| * of conditions and the following disclaimer in their documentation; |
| * |
| * 3. the name of the copyright holder is not used to endorse products |
| * built using this software without specific written permission. |
| * |
| * DISCLAIMER |
| * |
| * This software is provided 'as is' with no explicit or implied warranties |
| * in respect of its properties, including, but not limited to, correctness |
| * and/or fitness for purpose. |
| * --------------------------------------------------------------------------- |
| * Issue Date: 20/12/2007 |
| * |
| * This file contains the code for declaring the tables needed to implement |
| * AES. The file aesopt.h is assumed to be included before this header file. |
| * If there are no global variables, the definitions here can be used to put |
| * the AES tables in a structure so that a pointer can then be added to the |
| * AES context to pass them to the AES routines that need them. If this |
| * facility is used, the calling program has to ensure that this pointer is |
| * managed appropriately. In particular, the value of the t_dec(in, it) item |
| * in the table structure must be set to zero in order to ensure that the |
| * tables are initialised. In practice the three code sequences in aeskey.c |
| * that control the calls to aes_init() and the aes_init() routine itself will |
| * have to be changed for a specific implementation. If global variables are |
| * available it will generally be preferable to use them with the precomputed |
| * FIXED_TABLES option that uses static global tables. |
| * |
| * The following defines can be used to control the way the tables |
| * are defined, initialised and used in embedded environments that |
| * require special features for these purposes |
| * |
| * the 't_dec' construction is used to declare fixed table arrays |
| * the 't_set' construction is used to set fixed table values |
| * the 't_use' construction is used to access fixed table values |
| * |
| * 256 byte tables: |
| * |
| * t_xxx(s, box) => forward S box |
| * t_xxx(i, box) => inverse S box |
| * |
| * 256 32-bit word OR 4 x 256 32-bit word tables: |
| * |
| * t_xxx(f, n) => forward normal round |
| * t_xxx(f, l) => forward last round |
| * t_xxx(i, n) => inverse normal round |
| * t_xxx(i, l) => inverse last round |
| * t_xxx(l, s) => key schedule table |
| * t_xxx(i, m) => key schedule table |
| * |
| * Other variables and tables: |
| * |
| * t_xxx(r, c) => the rcon table |
| */ |
| |
| /* |
| * OpenSolaris OS modifications |
| * |
| * 1. Added __cplusplus and _AESTAB_H header guards |
| * 2. Added header file sys/types.h |
| * 3. Remove code defined for _MSC_VER |
| * 4. Changed all variables to "static const" |
| * 5. Changed uint_8t and uint_32t to uint8_t and uint32_t |
| * 6. Cstyled and hdrchk code |
| */ |
| |
| #ifndef _AESTAB_H |
| #define _AESTAB_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <sys/types.h> |
| |
| #define t_dec(m, n) t_##m##n |
| #define t_set(m, n) t_##m##n |
| #define t_use(m, n) t_##m##n |
| |
| #if defined(DO_TABLES) && defined(FIXED_TABLES) |
| #define d_1(t, n, b, e) static const t n[256] = b(e) |
| #define d_4(t, n, b, e, f, g, h) static const t n[4][256] = \ |
| {b(e), b(f), b(g), b(h)} |
| static const uint32_t t_dec(r, c)[RC_LENGTH] = rc_data(w0); |
| #else |
| #define d_1(t, n, b, e) static const t n[256] |
| #define d_4(t, n, b, e, f, g, h) static const t n[4][256] |
| static const uint32_t t_dec(r, c)[RC_LENGTH]; |
| #endif |
| |
| #if defined(SBX_SET) |
| d_1(uint8_t, t_dec(s, box), sb_data, h0); |
| #endif |
| #if defined(ISB_SET) |
| d_1(uint8_t, t_dec(i, box), isb_data, h0); |
| #endif |
| |
| #if defined(FT1_SET) |
| d_1(uint32_t, t_dec(f, n), sb_data, u0); |
| #endif |
| #if defined(FT4_SET) |
| d_4(uint32_t, t_dec(f, n), sb_data, u0, u1, u2, u3); |
| #endif |
| |
| #if defined(FL1_SET) |
| d_1(uint32_t, t_dec(f, l), sb_data, w0); |
| #endif |
| #if defined(FL4_SET) |
| d_4(uint32_t, t_dec(f, l), sb_data, w0, w1, w2, w3); |
| #endif |
| |
| #if defined(IT1_SET) |
| d_1(uint32_t, t_dec(i, n), isb_data, v0); |
| #endif |
| #if defined(IT4_SET) |
| d_4(uint32_t, t_dec(i, n), isb_data, v0, v1, v2, v3); |
| #endif |
| |
| #if defined(IL1_SET) |
| d_1(uint32_t, t_dec(i, l), isb_data, w0); |
| #endif |
| #if defined(IL4_SET) |
| d_4(uint32_t, t_dec(i, l), isb_data, w0, w1, w2, w3); |
| #endif |
| |
| #if defined(LS1_SET) |
| #if defined(FL1_SET) |
| #undef LS1_SET |
| #else |
| d_1(uint32_t, t_dec(l, s), sb_data, w0); |
| #endif |
| #endif |
| |
| #if defined(LS4_SET) |
| #if defined(FL4_SET) |
| #undef LS4_SET |
| #else |
| d_4(uint32_t, t_dec(l, s), sb_data, w0, w1, w2, w3); |
| #endif |
| #endif |
| |
| #if defined(IM1_SET) |
| d_1(uint32_t, t_dec(i, m), mm_data, v0); |
| #endif |
| #if defined(IM4_SET) |
| d_4(uint32_t, t_dec(i, m), mm_data, v0, v1, v2, v3); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _AESTAB_H */ |
