1214501Srpaulo/* 2214501Srpaulo * AES (Rijndael) cipher 3214501Srpaulo * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi> 4214501Srpaulo * 5214501Srpaulo * This program is free software; you can redistribute it and/or modify 6214501Srpaulo * it under the terms of the GNU General Public License version 2 as 7214501Srpaulo * published by the Free Software Foundation. 8214501Srpaulo * 9214501Srpaulo * Alternatively, this software may be distributed under the terms of BSD 10214501Srpaulo * license. 11214501Srpaulo * 12214501Srpaulo * See README and COPYING for more details. 13214501Srpaulo */ 14214501Srpaulo 15214501Srpaulo#ifndef AES_I_H 16214501Srpaulo#define AES_I_H 17214501Srpaulo 18214501Srpaulo#include "aes.h" 19214501Srpaulo 20214501Srpaulo/* #define FULL_UNROLL */ 21214501Srpaulo#define AES_SMALL_TABLES 22214501Srpaulo 23214501Srpauloextern const u32 Te0[256]; 24214501Srpauloextern const u32 Te1[256]; 25214501Srpauloextern const u32 Te2[256]; 26214501Srpauloextern const u32 Te3[256]; 27214501Srpauloextern const u32 Te4[256]; 28214501Srpauloextern const u32 Td0[256]; 29214501Srpauloextern const u32 Td1[256]; 30214501Srpauloextern const u32 Td2[256]; 31214501Srpauloextern const u32 Td3[256]; 32214501Srpauloextern const u32 Td4[256]; 33214501Srpauloextern const u32 rcon[10]; 34214501Srpauloextern const u8 Td4s[256]; 35214501Srpauloextern const u8 rcons[10]; 36214501Srpaulo 37214501Srpaulo#ifndef AES_SMALL_TABLES 38214501Srpaulo 39214501Srpaulo#define RCON(i) rcon[(i)] 40214501Srpaulo 41214501Srpaulo#define TE0(i) Te0[((i) >> 24) & 0xff] 42214501Srpaulo#define TE1(i) Te1[((i) >> 16) & 0xff] 43214501Srpaulo#define TE2(i) Te2[((i) >> 8) & 0xff] 44214501Srpaulo#define TE3(i) Te3[(i) & 0xff] 45214501Srpaulo#define TE41(i) (Te4[((i) >> 24) & 0xff] & 0xff000000) 46214501Srpaulo#define TE42(i) (Te4[((i) >> 16) & 0xff] & 0x00ff0000) 47214501Srpaulo#define TE43(i) (Te4[((i) >> 8) & 0xff] & 0x0000ff00) 48214501Srpaulo#define TE44(i) (Te4[(i) & 0xff] & 0x000000ff) 49214501Srpaulo#define TE421(i) (Te4[((i) >> 16) & 0xff] & 0xff000000) 50214501Srpaulo#define TE432(i) (Te4[((i) >> 8) & 0xff] & 0x00ff0000) 51214501Srpaulo#define TE443(i) (Te4[(i) & 0xff] & 0x0000ff00) 52214501Srpaulo#define TE414(i) (Te4[((i) >> 24) & 0xff] & 0x000000ff) 53214501Srpaulo#define TE4(i) (Te4[(i)] & 0x000000ff) 54214501Srpaulo 55214501Srpaulo#define TD0(i) Td0[((i) >> 24) & 0xff] 56214501Srpaulo#define TD1(i) Td1[((i) >> 16) & 0xff] 57214501Srpaulo#define TD2(i) Td2[((i) >> 8) & 0xff] 58214501Srpaulo#define TD3(i) Td3[(i) & 0xff] 59214501Srpaulo#define TD41(i) (Td4[((i) >> 24) & 0xff] & 0xff000000) 60214501Srpaulo#define TD42(i) (Td4[((i) >> 16) & 0xff] & 0x00ff0000) 61214501Srpaulo#define TD43(i) (Td4[((i) >> 8) & 0xff] & 0x0000ff00) 62214501Srpaulo#define TD44(i) (Td4[(i) & 0xff] & 0x000000ff) 63214501Srpaulo#define TD0_(i) Td0[(i) & 0xff] 64214501Srpaulo#define TD1_(i) Td1[(i) & 0xff] 65214501Srpaulo#define TD2_(i) Td2[(i) & 0xff] 66214501Srpaulo#define TD3_(i) Td3[(i) & 0xff] 67214501Srpaulo 68214501Srpaulo#else /* AES_SMALL_TABLES */ 69214501Srpaulo 70214501Srpaulo#define RCON(i) (rcons[(i)] << 24) 71214501Srpaulo 72214501Srpaulostatic inline u32 rotr(u32 val, int bits) 73214501Srpaulo{ 74214501Srpaulo return (val >> bits) | (val << (32 - bits)); 75214501Srpaulo} 76214501Srpaulo 77214501Srpaulo#define TE0(i) Te0[((i) >> 24) & 0xff] 78214501Srpaulo#define TE1(i) rotr(Te0[((i) >> 16) & 0xff], 8) 79214501Srpaulo#define TE2(i) rotr(Te0[((i) >> 8) & 0xff], 16) 80214501Srpaulo#define TE3(i) rotr(Te0[(i) & 0xff], 24) 81214501Srpaulo#define TE41(i) ((Te0[((i) >> 24) & 0xff] << 8) & 0xff000000) 82214501Srpaulo#define TE42(i) (Te0[((i) >> 16) & 0xff] & 0x00ff0000) 83214501Srpaulo#define TE43(i) (Te0[((i) >> 8) & 0xff] & 0x0000ff00) 84214501Srpaulo#define TE44(i) ((Te0[(i) & 0xff] >> 8) & 0x000000ff) 85214501Srpaulo#define TE421(i) ((Te0[((i) >> 16) & 0xff] << 8) & 0xff000000) 86214501Srpaulo#define TE432(i) (Te0[((i) >> 8) & 0xff] & 0x00ff0000) 87214501Srpaulo#define TE443(i) (Te0[(i) & 0xff] & 0x0000ff00) 88214501Srpaulo#define TE414(i) ((Te0[((i) >> 24) & 0xff] >> 8) & 0x000000ff) 89214501Srpaulo#define TE4(i) ((Te0[(i)] >> 8) & 0x000000ff) 90214501Srpaulo 91214501Srpaulo#define TD0(i) Td0[((i) >> 24) & 0xff] 92214501Srpaulo#define TD1(i) rotr(Td0[((i) >> 16) & 0xff], 8) 93214501Srpaulo#define TD2(i) rotr(Td0[((i) >> 8) & 0xff], 16) 94214501Srpaulo#define TD3(i) rotr(Td0[(i) & 0xff], 24) 95214501Srpaulo#define TD41(i) (Td4s[((i) >> 24) & 0xff] << 24) 96214501Srpaulo#define TD42(i) (Td4s[((i) >> 16) & 0xff] << 16) 97214501Srpaulo#define TD43(i) (Td4s[((i) >> 8) & 0xff] << 8) 98214501Srpaulo#define TD44(i) (Td4s[(i) & 0xff]) 99214501Srpaulo#define TD0_(i) Td0[(i) & 0xff] 100214501Srpaulo#define TD1_(i) rotr(Td0[(i) & 0xff], 8) 101214501Srpaulo#define TD2_(i) rotr(Td0[(i) & 0xff], 16) 102214501Srpaulo#define TD3_(i) rotr(Td0[(i) & 0xff], 24) 103214501Srpaulo 104214501Srpaulo#endif /* AES_SMALL_TABLES */ 105214501Srpaulo 106214501Srpaulo#ifdef _MSC_VER 107214501Srpaulo#define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00) 108214501Srpaulo#define GETU32(p) SWAP(*((u32 *)(p))) 109214501Srpaulo#define PUTU32(ct, st) { *((u32 *)(ct)) = SWAP((st)); } 110214501Srpaulo#else 111214501Srpaulo#define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ \ 112214501Srpaulo((u32)(pt)[2] << 8) ^ ((u32)(pt)[3])) 113214501Srpaulo#define PUTU32(ct, st) { \ 114214501Srpaulo(ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); \ 115214501Srpaulo(ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); } 116214501Srpaulo#endif 117214501Srpaulo 118214501Srpaulo#define AES_PRIV_SIZE (4 * 44) 119214501Srpaulo 120214501Srpaulovoid rijndaelKeySetupEnc(u32 rk[/*44*/], const u8 cipherKey[]); 121214501Srpaulo 122214501Srpaulo#endif /* AES_I_H */ 123