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