1/* 2 * AES (Rijndael) cipher 3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15#ifndef AES_I_H 16#define AES_I_H 17 18#include "aes.h" 19 20/* #define FULL_UNROLL */ 21#define AES_SMALL_TABLES 22 23extern const u32 Te0[256]; 24extern const u32 Te1[256]; 25extern const u32 Te2[256]; 26extern const u32 Te3[256]; 27extern const u32 Te4[256]; 28extern const u32 Td0[256]; 29extern const u32 Td1[256]; 30extern const u32 Td2[256]; 31extern const u32 Td3[256]; 32extern const u32 Td4[256]; 33extern const u32 rcon[10]; 34extern const u8 Td4s[256]; 35extern const u8 rcons[10]; 36 37#ifndef AES_SMALL_TABLES 38 39#define RCON(i) rcon[(i)] 40 41#define TE0(i) Te0[((i) >> 24) & 0xff] 42#define TE1(i) Te1[((i) >> 16) & 0xff] 43#define TE2(i) Te2[((i) >> 8) & 0xff] 44#define TE3(i) Te3[(i) & 0xff] 45#define TE41(i) (Te4[((i) >> 24) & 0xff] & 0xff000000) 46#define TE42(i) (Te4[((i) >> 16) & 0xff] & 0x00ff0000) 47#define TE43(i) (Te4[((i) >> 8) & 0xff] & 0x0000ff00) 48#define TE44(i) (Te4[(i) & 0xff] & 0x000000ff) 49#define TE421(i) (Te4[((i) >> 16) & 0xff] & 0xff000000) 50#define TE432(i) (Te4[((i) >> 8) & 0xff] & 0x00ff0000) 51#define TE443(i) (Te4[(i) & 0xff] & 0x0000ff00) 52#define TE414(i) (Te4[((i) >> 24) & 0xff] & 0x000000ff) 53#define TE4(i) (Te4[(i)] & 0x000000ff) 54 55#define TD0(i) Td0[((i) >> 24) & 0xff] 56#define TD1(i) Td1[((i) >> 16) & 0xff] 57#define TD2(i) Td2[((i) >> 8) & 0xff] 58#define TD3(i) Td3[(i) & 0xff] 59#define TD41(i) (Td4[((i) >> 24) & 0xff] & 0xff000000) 60#define TD42(i) (Td4[((i) >> 16) & 0xff] & 0x00ff0000) 61#define TD43(i) (Td4[((i) >> 8) & 0xff] & 0x0000ff00) 62#define TD44(i) (Td4[(i) & 0xff] & 0x000000ff) 63#define TD0_(i) Td0[(i) & 0xff] 64#define TD1_(i) Td1[(i) & 0xff] 65#define TD2_(i) Td2[(i) & 0xff] 66#define TD3_(i) Td3[(i) & 0xff] 67 68#else /* AES_SMALL_TABLES */ 69 70#define RCON(i) (rcons[(i)] << 24) 71 72static inline u32 rotr(u32 val, int bits) 73{ 74 return (val >> bits) | (val << (32 - bits)); 75} 76 77#define TE0(i) Te0[((i) >> 24) & 0xff] 78#define TE1(i) rotr(Te0[((i) >> 16) & 0xff], 8) 79#define TE2(i) rotr(Te0[((i) >> 8) & 0xff], 16) 80#define TE3(i) rotr(Te0[(i) & 0xff], 24) 81#define TE41(i) ((Te0[((i) >> 24) & 0xff] << 8) & 0xff000000) 82#define TE42(i) (Te0[((i) >> 16) & 0xff] & 0x00ff0000) 83#define TE43(i) (Te0[((i) >> 8) & 0xff] & 0x0000ff00) 84#define TE44(i) ((Te0[(i) & 0xff] >> 8) & 0x000000ff) 85#define TE421(i) ((Te0[((i) >> 16) & 0xff] << 8) & 0xff000000) 86#define TE432(i) (Te0[((i) >> 8) & 0xff] & 0x00ff0000) 87#define TE443(i) (Te0[(i) & 0xff] & 0x0000ff00) 88#define TE414(i) ((Te0[((i) >> 24) & 0xff] >> 8) & 0x000000ff) 89#define TE4(i) ((Te0[(i)] >> 8) & 0x000000ff) 90 91#define TD0(i) Td0[((i) >> 24) & 0xff] 92#define TD1(i) rotr(Td0[((i) >> 16) & 0xff], 8) 93#define TD2(i) rotr(Td0[((i) >> 8) & 0xff], 16) 94#define TD3(i) rotr(Td0[(i) & 0xff], 24) 95#define TD41(i) (Td4s[((i) >> 24) & 0xff] << 24) 96#define TD42(i) (Td4s[((i) >> 16) & 0xff] << 16) 97#define TD43(i) (Td4s[((i) >> 8) & 0xff] << 8) 98#define TD44(i) (Td4s[(i) & 0xff]) 99#define TD0_(i) Td0[(i) & 0xff] 100#define TD1_(i) rotr(Td0[(i) & 0xff], 8) 101#define TD2_(i) rotr(Td0[(i) & 0xff], 16) 102#define TD3_(i) rotr(Td0[(i) & 0xff], 24) 103 104#endif /* AES_SMALL_TABLES */ 105 106#ifdef _MSC_VER 107#define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00) 108#define GETU32(p) SWAP(*((u32 *)(p))) 109#define PUTU32(ct, st) { *((u32 *)(ct)) = SWAP((st)); } 110#else 111#define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ \ 112((u32)(pt)[2] << 8) ^ ((u32)(pt)[3])) 113#define PUTU32(ct, st) { \ 114(ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); \ 115(ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); } 116#endif 117 118#define AES_PRIV_SIZE (4 * 44) 119 120void rijndaelKeySetupEnc(u32 rk[/*44*/], const u8 cipherKey[]); 121 122#endif /* AES_I_H */ 123