1 /* 2 * AES (Rijndael) cipher 3 * Copyright (c) 2003-2005, Jouni Malinen <j (at) 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 23 extern const u32 Te0[256]; 24 extern const u32 Te1[256]; 25 extern const u32 Te2[256]; 26 extern const u32 Te3[256]; 27 extern const u32 Te4[256]; 28 extern const u32 Td0[256]; 29 extern const u32 Td1[256]; 30 extern const u32 Td2[256]; 31 extern const u32 Td3[256]; 32 extern const u32 Td4[256]; 33 extern const u32 rcon[10]; 34 extern const u8 Td4s[256]; 35 extern 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 72 static 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) 119 120 void rijndaelKeySetupEnc(u32 rk[/*44*/], const u8 cipherKey[]); 121 122 #endif /* AES_I_H */ 123
