libosmogsm  1.9.2
Osmocom GSM library
aes_i.h
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1 
3 /*
4  * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * Alternatively, this software may be distributed under the terms of BSD
11  * license.
12  *
13  * SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
14  *
15  * See README and COPYING for more details.
16  */
17 
18 #pragma once
19 
20 #include "aes.h"
21 
22 /* #define FULL_UNROLL */
23 #define AES_SMALL_TABLES
24 
25 extern const u32 Te0[256];
26 extern const u32 Te1[256];
27 extern const u32 Te2[256];
28 extern const u32 Te3[256];
29 extern const u32 Te4[256];
30 extern const u32 Td0[256];
31 extern const u32 Td1[256];
32 extern const u32 Td2[256];
33 extern const u32 Td3[256];
34 extern const u32 Td4[256];
35 extern const u32 rcon[10];
36 extern const u8 Td4s[256];
37 extern const u8 rcons[10];
38 
39 #ifndef AES_SMALL_TABLES
40 
41 #define RCON(i) rcon[(i)]
42 
43 #define TE0(i) Te0[((i) >> 24) & 0xff]
44 #define TE1(i) Te1[((i) >> 16) & 0xff]
45 #define TE2(i) Te2[((i) >> 8) & 0xff]
46 #define TE3(i) Te3[(i) & 0xff]
47 #define TE41(i) (Te4[((i) >> 24) & 0xff] & 0xff000000)
48 #define TE42(i) (Te4[((i) >> 16) & 0xff] & 0x00ff0000)
49 #define TE43(i) (Te4[((i) >> 8) & 0xff] & 0x0000ff00)
50 #define TE44(i) (Te4[(i) & 0xff] & 0x000000ff)
51 #define TE421(i) (Te4[((i) >> 16) & 0xff] & 0xff000000)
52 #define TE432(i) (Te4[((i) >> 8) & 0xff] & 0x00ff0000)
53 #define TE443(i) (Te4[(i) & 0xff] & 0x0000ff00)
54 #define TE414(i) (Te4[((i) >> 24) & 0xff] & 0x000000ff)
55 #define TE4(i) (Te4[(i)] & 0x000000ff)
56 
57 #define TD0(i) Td0[((i) >> 24) & 0xff]
58 #define TD1(i) Td1[((i) >> 16) & 0xff]
59 #define TD2(i) Td2[((i) >> 8) & 0xff]
60 #define TD3(i) Td3[(i) & 0xff]
61 #define TD41(i) (Td4[((i) >> 24) & 0xff] & 0xff000000)
62 #define TD42(i) (Td4[((i) >> 16) & 0xff] & 0x00ff0000)
63 #define TD43(i) (Td4[((i) >> 8) & 0xff] & 0x0000ff00)
64 #define TD44(i) (Td4[(i) & 0xff] & 0x000000ff)
65 #define TD0_(i) Td0[(i) & 0xff]
66 #define TD1_(i) Td1[(i) & 0xff]
67 #define TD2_(i) Td2[(i) & 0xff]
68 #define TD3_(i) Td3[(i) & 0xff]
69 
70 #else /* AES_SMALL_TABLES */
71 
72 #define RCON(i) ((u32)rcons[(i)] << 24)
73 
74 static inline u32 rotr(u32 val, int bits)
75 {
76  return (val >> bits) | (val << (32 - bits));
77 }
78 
79 #define TE0(i) Te0[((i) >> 24) & 0xff]
80 #define TE1(i) rotr(Te0[((i) >> 16) & 0xff], 8)
81 #define TE2(i) rotr(Te0[((i) >> 8) & 0xff], 16)
82 #define TE3(i) rotr(Te0[(i) & 0xff], 24)
83 #define TE41(i) ((Te0[((i) >> 24) & 0xff] << 8) & 0xff000000)
84 #define TE42(i) (Te0[((i) >> 16) & 0xff] & 0x00ff0000)
85 #define TE43(i) (Te0[((i) >> 8) & 0xff] & 0x0000ff00)
86 #define TE44(i) ((Te0[(i) & 0xff] >> 8) & 0x000000ff)
87 #define TE421(i) ((Te0[((i) >> 16) & 0xff] << 8) & 0xff000000)
88 #define TE432(i) (Te0[((i) >> 8) & 0xff] & 0x00ff0000)
89 #define TE443(i) (Te0[(i) & 0xff] & 0x0000ff00)
90 #define TE414(i) ((Te0[((i) >> 24) & 0xff] >> 8) & 0x000000ff)
91 #define TE4(i) ((Te0[(i)] >> 8) & 0x000000ff)
92 
93 #define TD0(i) Td0[((i) >> 24) & 0xff]
94 #define TD1(i) rotr(Td0[((i) >> 16) & 0xff], 8)
95 #define TD2(i) rotr(Td0[((i) >> 8) & 0xff], 16)
96 #define TD3(i) rotr(Td0[(i) & 0xff], 24)
97 #define TD41(i) (Td4s[((i) >> 24) & 0xff] << 24)
98 #define TD42(i) (Td4s[((i) >> 16) & 0xff] << 16)
99 #define TD43(i) (Td4s[((i) >> 8) & 0xff] << 8)
100 #define TD44(i) (Td4s[(i) & 0xff])
101 #define TD0_(i) Td0[(i) & 0xff]
102 #define TD1_(i) rotr(Td0[(i) & 0xff], 8)
103 #define TD2_(i) rotr(Td0[(i) & 0xff], 16)
104 #define TD3_(i) rotr(Td0[(i) & 0xff], 24)
105 
106 #endif /* AES_SMALL_TABLES */
107 
108 #ifdef _MSC_VER
109 #define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00)
110 #define GETU32(p) SWAP(*((u32 *)(p)))
111 #define PUTU32(ct, st) { *((u32 *)(ct)) = SWAP((st)); }
112 #else
113 #define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ \
114 ((u32)(pt)[2] << 8) ^ ((u32)(pt)[3]))
115 #define PUTU32(ct, st) { \
116 (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); \
117 (ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); }
118 #endif
119 
120 #define AES_PRIV_SIZE (4 * 44)
121 
122 void rijndaelKeySetupEnc(u32 rk[/*44*/], const u8 cipherKey[]);
Td0
const u32 Td0[256]
Definition: aes-internal.c:407
Td3
const u32 Td3[256]
Te1
const u32 Te1[256]
u32
uint32_t u32
Definition: common.h:25
Te2
const u32 Te2[256]
rcon
const u32 rcon[10]
aes.h
Te3
const u32 Te3[256]
Te4
const u32 Te4[256]
Td2
const u32 Td2[256]
u8
uint8_t u8
Definition: common.h:27
Td1
const u32 Td1[256]
Td4s
const u8 Td4s[256]
Definition: aes-internal.c:745
Td4
const u32 Td4[256]
rcons
const u8 rcons[10]
Definition: aes-internal.c:779
rotr
static u32 rotr(u32 val, int bits)
Definition: aes_i.h:74
rijndaelKeySetupEnc
void rijndaelKeySetupEnc(u32 rk[], const u8 cipherKey[])
Expand the cipher key into the encryption key schedule.
Definition: aes-internal.c:789
Te0
const u32 Te0[256]
Definition: aes-internal.c:74