libosmogsm 1.13.1.1-afb4 Osmocom GSM library

aes_i.h
Go to the documentation of this file.
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[]);
aes.h
AES functions.
rijndaelKeySetupEnc
void rijndaelKeySetupEnc(u32 rk[], const u8 cipherKey[])
Expand the cipher key into the encryption key schedule.
Definition: aes-internal.c:789
rcon
const u32 rcon[10]
Te0
const u32 Te0[256]
Definition: aes-internal.c:74
Td2
const u32 Td2[256]
Te2
const u32 Te2[256]
Td3
const u32 Td3[256]
Te1
const u32 Te1[256]
Td4s
const u8 Td4s[256]
Definition: aes-internal.c:745
rotr
static u32 rotr(u32 val, int bits)
Definition: aes_i.h:74
Td0
const u32 Td0[256]
Definition: aes-internal.c:407
Te4
const u32 Te4[256]
Td4
const u32 Td4[256]
rcons
const u8 rcons[10]
Definition: aes-internal.c:779
Te3
const u32 Te3[256]
Td1
const u32 Td1[256]
u8
uint8_t u8
Definition: common.h:27
u32
uint32_t u32
Definition: common.h:25