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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2006
4 * NTT (Nippon Telegraph and Telephone Corporation).
5 */
6
7/*
8 * Algorithm Specification
9 * https://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html
10 */
11
12#include <crypto/algapi.h>
13#include <linux/errno.h>
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/bitops.h>
18#include <asm/unaligned.h>
19
20static const u32 camellia_sp1110[256] = {
21 0x70707000, 0x82828200, 0x2c2c2c00, 0xececec00,
22 0xb3b3b300, 0x27272700, 0xc0c0c000, 0xe5e5e500,
23 0xe4e4e400, 0x85858500, 0x57575700, 0x35353500,
24 0xeaeaea00, 0x0c0c0c00, 0xaeaeae00, 0x41414100,
25 0x23232300, 0xefefef00, 0x6b6b6b00, 0x93939300,
26 0x45454500, 0x19191900, 0xa5a5a500, 0x21212100,
27 0xededed00, 0x0e0e0e00, 0x4f4f4f00, 0x4e4e4e00,
28 0x1d1d1d00, 0x65656500, 0x92929200, 0xbdbdbd00,
29 0x86868600, 0xb8b8b800, 0xafafaf00, 0x8f8f8f00,
30 0x7c7c7c00, 0xebebeb00, 0x1f1f1f00, 0xcecece00,
31 0x3e3e3e00, 0x30303000, 0xdcdcdc00, 0x5f5f5f00,
32 0x5e5e5e00, 0xc5c5c500, 0x0b0b0b00, 0x1a1a1a00,
33 0xa6a6a600, 0xe1e1e100, 0x39393900, 0xcacaca00,
34 0xd5d5d500, 0x47474700, 0x5d5d5d00, 0x3d3d3d00,
35 0xd9d9d900, 0x01010100, 0x5a5a5a00, 0xd6d6d600,
36 0x51515100, 0x56565600, 0x6c6c6c00, 0x4d4d4d00,
37 0x8b8b8b00, 0x0d0d0d00, 0x9a9a9a00, 0x66666600,
38 0xfbfbfb00, 0xcccccc00, 0xb0b0b000, 0x2d2d2d00,
39 0x74747400, 0x12121200, 0x2b2b2b00, 0x20202000,
40 0xf0f0f000, 0xb1b1b100, 0x84848400, 0x99999900,
41 0xdfdfdf00, 0x4c4c4c00, 0xcbcbcb00, 0xc2c2c200,
42 0x34343400, 0x7e7e7e00, 0x76767600, 0x05050500,
43 0x6d6d6d00, 0xb7b7b700, 0xa9a9a900, 0x31313100,
44 0xd1d1d100, 0x17171700, 0x04040400, 0xd7d7d700,
45 0x14141400, 0x58585800, 0x3a3a3a00, 0x61616100,
46 0xdedede00, 0x1b1b1b00, 0x11111100, 0x1c1c1c00,
47 0x32323200, 0x0f0f0f00, 0x9c9c9c00, 0x16161600,
48 0x53535300, 0x18181800, 0xf2f2f200, 0x22222200,
49 0xfefefe00, 0x44444400, 0xcfcfcf00, 0xb2b2b200,
50 0xc3c3c300, 0xb5b5b500, 0x7a7a7a00, 0x91919100,
51 0x24242400, 0x08080800, 0xe8e8e800, 0xa8a8a800,
52 0x60606000, 0xfcfcfc00, 0x69696900, 0x50505000,
53 0xaaaaaa00, 0xd0d0d000, 0xa0a0a000, 0x7d7d7d00,
54 0xa1a1a100, 0x89898900, 0x62626200, 0x97979700,
55 0x54545400, 0x5b5b5b00, 0x1e1e1e00, 0x95959500,
56 0xe0e0e000, 0xffffff00, 0x64646400, 0xd2d2d200,
57 0x10101000, 0xc4c4c400, 0x00000000, 0x48484800,
58 0xa3a3a300, 0xf7f7f700, 0x75757500, 0xdbdbdb00,
59 0x8a8a8a00, 0x03030300, 0xe6e6e600, 0xdadada00,
60 0x09090900, 0x3f3f3f00, 0xdddddd00, 0x94949400,
61 0x87878700, 0x5c5c5c00, 0x83838300, 0x02020200,
62 0xcdcdcd00, 0x4a4a4a00, 0x90909000, 0x33333300,
63 0x73737300, 0x67676700, 0xf6f6f600, 0xf3f3f300,
64 0x9d9d9d00, 0x7f7f7f00, 0xbfbfbf00, 0xe2e2e200,
65 0x52525200, 0x9b9b9b00, 0xd8d8d800, 0x26262600,
66 0xc8c8c800, 0x37373700, 0xc6c6c600, 0x3b3b3b00,
67 0x81818100, 0x96969600, 0x6f6f6f00, 0x4b4b4b00,
68 0x13131300, 0xbebebe00, 0x63636300, 0x2e2e2e00,
69 0xe9e9e900, 0x79797900, 0xa7a7a700, 0x8c8c8c00,
70 0x9f9f9f00, 0x6e6e6e00, 0xbcbcbc00, 0x8e8e8e00,
71 0x29292900, 0xf5f5f500, 0xf9f9f900, 0xb6b6b600,
72 0x2f2f2f00, 0xfdfdfd00, 0xb4b4b400, 0x59595900,
73 0x78787800, 0x98989800, 0x06060600, 0x6a6a6a00,
74 0xe7e7e700, 0x46464600, 0x71717100, 0xbababa00,
75 0xd4d4d400, 0x25252500, 0xababab00, 0x42424200,
76 0x88888800, 0xa2a2a200, 0x8d8d8d00, 0xfafafa00,
77 0x72727200, 0x07070700, 0xb9b9b900, 0x55555500,
78 0xf8f8f800, 0xeeeeee00, 0xacacac00, 0x0a0a0a00,
79 0x36363600, 0x49494900, 0x2a2a2a00, 0x68686800,
80 0x3c3c3c00, 0x38383800, 0xf1f1f100, 0xa4a4a400,
81 0x40404000, 0x28282800, 0xd3d3d300, 0x7b7b7b00,
82 0xbbbbbb00, 0xc9c9c900, 0x43434300, 0xc1c1c100,
83 0x15151500, 0xe3e3e300, 0xadadad00, 0xf4f4f400,
84 0x77777700, 0xc7c7c700, 0x80808000, 0x9e9e9e00,
85};
86
87static const u32 camellia_sp0222[256] = {
88 0x00e0e0e0, 0x00050505, 0x00585858, 0x00d9d9d9,
89 0x00676767, 0x004e4e4e, 0x00818181, 0x00cbcbcb,
90 0x00c9c9c9, 0x000b0b0b, 0x00aeaeae, 0x006a6a6a,
91 0x00d5d5d5, 0x00181818, 0x005d5d5d, 0x00828282,
92 0x00464646, 0x00dfdfdf, 0x00d6d6d6, 0x00272727,
93 0x008a8a8a, 0x00323232, 0x004b4b4b, 0x00424242,
94 0x00dbdbdb, 0x001c1c1c, 0x009e9e9e, 0x009c9c9c,
95 0x003a3a3a, 0x00cacaca, 0x00252525, 0x007b7b7b,
96 0x000d0d0d, 0x00717171, 0x005f5f5f, 0x001f1f1f,
97 0x00f8f8f8, 0x00d7d7d7, 0x003e3e3e, 0x009d9d9d,
98 0x007c7c7c, 0x00606060, 0x00b9b9b9, 0x00bebebe,
99 0x00bcbcbc, 0x008b8b8b, 0x00161616, 0x00343434,
100 0x004d4d4d, 0x00c3c3c3, 0x00727272, 0x00959595,
101 0x00ababab, 0x008e8e8e, 0x00bababa, 0x007a7a7a,
102 0x00b3b3b3, 0x00020202, 0x00b4b4b4, 0x00adadad,
103 0x00a2a2a2, 0x00acacac, 0x00d8d8d8, 0x009a9a9a,
104 0x00171717, 0x001a1a1a, 0x00353535, 0x00cccccc,
105 0x00f7f7f7, 0x00999999, 0x00616161, 0x005a5a5a,
106 0x00e8e8e8, 0x00242424, 0x00565656, 0x00404040,
107 0x00e1e1e1, 0x00636363, 0x00090909, 0x00333333,
108 0x00bfbfbf, 0x00989898, 0x00979797, 0x00858585,
109 0x00686868, 0x00fcfcfc, 0x00ececec, 0x000a0a0a,
110 0x00dadada, 0x006f6f6f, 0x00535353, 0x00626262,
111 0x00a3a3a3, 0x002e2e2e, 0x00080808, 0x00afafaf,
112 0x00282828, 0x00b0b0b0, 0x00747474, 0x00c2c2c2,
113 0x00bdbdbd, 0x00363636, 0x00222222, 0x00383838,
114 0x00646464, 0x001e1e1e, 0x00393939, 0x002c2c2c,
115 0x00a6a6a6, 0x00303030, 0x00e5e5e5, 0x00444444,
116 0x00fdfdfd, 0x00888888, 0x009f9f9f, 0x00656565,
117 0x00878787, 0x006b6b6b, 0x00f4f4f4, 0x00232323,
118 0x00484848, 0x00101010, 0x00d1d1d1, 0x00515151,
119 0x00c0c0c0, 0x00f9f9f9, 0x00d2d2d2, 0x00a0a0a0,
120 0x00555555, 0x00a1a1a1, 0x00414141, 0x00fafafa,
121 0x00434343, 0x00131313, 0x00c4c4c4, 0x002f2f2f,
122 0x00a8a8a8, 0x00b6b6b6, 0x003c3c3c, 0x002b2b2b,
123 0x00c1c1c1, 0x00ffffff, 0x00c8c8c8, 0x00a5a5a5,
124 0x00202020, 0x00898989, 0x00000000, 0x00909090,
125 0x00474747, 0x00efefef, 0x00eaeaea, 0x00b7b7b7,
126 0x00151515, 0x00060606, 0x00cdcdcd, 0x00b5b5b5,
127 0x00121212, 0x007e7e7e, 0x00bbbbbb, 0x00292929,
128 0x000f0f0f, 0x00b8b8b8, 0x00070707, 0x00040404,
129 0x009b9b9b, 0x00949494, 0x00212121, 0x00666666,
130 0x00e6e6e6, 0x00cecece, 0x00ededed, 0x00e7e7e7,
131 0x003b3b3b, 0x00fefefe, 0x007f7f7f, 0x00c5c5c5,
132 0x00a4a4a4, 0x00373737, 0x00b1b1b1, 0x004c4c4c,
133 0x00919191, 0x006e6e6e, 0x008d8d8d, 0x00767676,
134 0x00030303, 0x002d2d2d, 0x00dedede, 0x00969696,
135 0x00262626, 0x007d7d7d, 0x00c6c6c6, 0x005c5c5c,
136 0x00d3d3d3, 0x00f2f2f2, 0x004f4f4f, 0x00191919,
137 0x003f3f3f, 0x00dcdcdc, 0x00797979, 0x001d1d1d,
138 0x00525252, 0x00ebebeb, 0x00f3f3f3, 0x006d6d6d,
139 0x005e5e5e, 0x00fbfbfb, 0x00696969, 0x00b2b2b2,
140 0x00f0f0f0, 0x00313131, 0x000c0c0c, 0x00d4d4d4,
141 0x00cfcfcf, 0x008c8c8c, 0x00e2e2e2, 0x00757575,
142 0x00a9a9a9, 0x004a4a4a, 0x00575757, 0x00848484,
143 0x00111111, 0x00454545, 0x001b1b1b, 0x00f5f5f5,
144 0x00e4e4e4, 0x000e0e0e, 0x00737373, 0x00aaaaaa,
145 0x00f1f1f1, 0x00dddddd, 0x00595959, 0x00141414,
146 0x006c6c6c, 0x00929292, 0x00545454, 0x00d0d0d0,
147 0x00787878, 0x00707070, 0x00e3e3e3, 0x00494949,
148 0x00808080, 0x00505050, 0x00a7a7a7, 0x00f6f6f6,
149 0x00777777, 0x00939393, 0x00868686, 0x00838383,
150 0x002a2a2a, 0x00c7c7c7, 0x005b5b5b, 0x00e9e9e9,
151 0x00eeeeee, 0x008f8f8f, 0x00010101, 0x003d3d3d,
152};
153
154static const u32 camellia_sp3033[256] = {
155 0x38003838, 0x41004141, 0x16001616, 0x76007676,
156 0xd900d9d9, 0x93009393, 0x60006060, 0xf200f2f2,
157 0x72007272, 0xc200c2c2, 0xab00abab, 0x9a009a9a,
158 0x75007575, 0x06000606, 0x57005757, 0xa000a0a0,
159 0x91009191, 0xf700f7f7, 0xb500b5b5, 0xc900c9c9,
160 0xa200a2a2, 0x8c008c8c, 0xd200d2d2, 0x90009090,
161 0xf600f6f6, 0x07000707, 0xa700a7a7, 0x27002727,
162 0x8e008e8e, 0xb200b2b2, 0x49004949, 0xde00dede,
163 0x43004343, 0x5c005c5c, 0xd700d7d7, 0xc700c7c7,
164 0x3e003e3e, 0xf500f5f5, 0x8f008f8f, 0x67006767,
165 0x1f001f1f, 0x18001818, 0x6e006e6e, 0xaf00afaf,
166 0x2f002f2f, 0xe200e2e2, 0x85008585, 0x0d000d0d,
167 0x53005353, 0xf000f0f0, 0x9c009c9c, 0x65006565,
168 0xea00eaea, 0xa300a3a3, 0xae00aeae, 0x9e009e9e,
169 0xec00ecec, 0x80008080, 0x2d002d2d, 0x6b006b6b,
170 0xa800a8a8, 0x2b002b2b, 0x36003636, 0xa600a6a6,
171 0xc500c5c5, 0x86008686, 0x4d004d4d, 0x33003333,
172 0xfd00fdfd, 0x66006666, 0x58005858, 0x96009696,
173 0x3a003a3a, 0x09000909, 0x95009595, 0x10001010,
174 0x78007878, 0xd800d8d8, 0x42004242, 0xcc00cccc,
175 0xef00efef, 0x26002626, 0xe500e5e5, 0x61006161,
176 0x1a001a1a, 0x3f003f3f, 0x3b003b3b, 0x82008282,
177 0xb600b6b6, 0xdb00dbdb, 0xd400d4d4, 0x98009898,
178 0xe800e8e8, 0x8b008b8b, 0x02000202, 0xeb00ebeb,
179 0x0a000a0a, 0x2c002c2c, 0x1d001d1d, 0xb000b0b0,
180 0x6f006f6f, 0x8d008d8d, 0x88008888, 0x0e000e0e,
181 0x19001919, 0x87008787, 0x4e004e4e, 0x0b000b0b,
182 0xa900a9a9, 0x0c000c0c, 0x79007979, 0x11001111,
183 0x7f007f7f, 0x22002222, 0xe700e7e7, 0x59005959,
184 0xe100e1e1, 0xda00dada, 0x3d003d3d, 0xc800c8c8,
185 0x12001212, 0x04000404, 0x74007474, 0x54005454,
186 0x30003030, 0x7e007e7e, 0xb400b4b4, 0x28002828,
187 0x55005555, 0x68006868, 0x50005050, 0xbe00bebe,
188 0xd000d0d0, 0xc400c4c4, 0x31003131, 0xcb00cbcb,
189 0x2a002a2a, 0xad00adad, 0x0f000f0f, 0xca00caca,
190 0x70007070, 0xff00ffff, 0x32003232, 0x69006969,
191 0x08000808, 0x62006262, 0x00000000, 0x24002424,
192 0xd100d1d1, 0xfb00fbfb, 0xba00baba, 0xed00eded,
193 0x45004545, 0x81008181, 0x73007373, 0x6d006d6d,
194 0x84008484, 0x9f009f9f, 0xee00eeee, 0x4a004a4a,
195 0xc300c3c3, 0x2e002e2e, 0xc100c1c1, 0x01000101,
196 0xe600e6e6, 0x25002525, 0x48004848, 0x99009999,
197 0xb900b9b9, 0xb300b3b3, 0x7b007b7b, 0xf900f9f9,
198 0xce00cece, 0xbf00bfbf, 0xdf00dfdf, 0x71007171,
199 0x29002929, 0xcd00cdcd, 0x6c006c6c, 0x13001313,
200 0x64006464, 0x9b009b9b, 0x63006363, 0x9d009d9d,
201 0xc000c0c0, 0x4b004b4b, 0xb700b7b7, 0xa500a5a5,
202 0x89008989, 0x5f005f5f, 0xb100b1b1, 0x17001717,
203 0xf400f4f4, 0xbc00bcbc, 0xd300d3d3, 0x46004646,
204 0xcf00cfcf, 0x37003737, 0x5e005e5e, 0x47004747,
205 0x94009494, 0xfa00fafa, 0xfc00fcfc, 0x5b005b5b,
206 0x97009797, 0xfe00fefe, 0x5a005a5a, 0xac00acac,
207 0x3c003c3c, 0x4c004c4c, 0x03000303, 0x35003535,
208 0xf300f3f3, 0x23002323, 0xb800b8b8, 0x5d005d5d,
209 0x6a006a6a, 0x92009292, 0xd500d5d5, 0x21002121,
210 0x44004444, 0x51005151, 0xc600c6c6, 0x7d007d7d,
211 0x39003939, 0x83008383, 0xdc00dcdc, 0xaa00aaaa,
212 0x7c007c7c, 0x77007777, 0x56005656, 0x05000505,
213 0x1b001b1b, 0xa400a4a4, 0x15001515, 0x34003434,
214 0x1e001e1e, 0x1c001c1c, 0xf800f8f8, 0x52005252,
215 0x20002020, 0x14001414, 0xe900e9e9, 0xbd00bdbd,
216 0xdd00dddd, 0xe400e4e4, 0xa100a1a1, 0xe000e0e0,
217 0x8a008a8a, 0xf100f1f1, 0xd600d6d6, 0x7a007a7a,
218 0xbb00bbbb, 0xe300e3e3, 0x40004040, 0x4f004f4f,
219};
220
221static const u32 camellia_sp4404[256] = {
222 0x70700070, 0x2c2c002c, 0xb3b300b3, 0xc0c000c0,
223 0xe4e400e4, 0x57570057, 0xeaea00ea, 0xaeae00ae,
224 0x23230023, 0x6b6b006b, 0x45450045, 0xa5a500a5,
225 0xeded00ed, 0x4f4f004f, 0x1d1d001d, 0x92920092,
226 0x86860086, 0xafaf00af, 0x7c7c007c, 0x1f1f001f,
227 0x3e3e003e, 0xdcdc00dc, 0x5e5e005e, 0x0b0b000b,
228 0xa6a600a6, 0x39390039, 0xd5d500d5, 0x5d5d005d,
229 0xd9d900d9, 0x5a5a005a, 0x51510051, 0x6c6c006c,
230 0x8b8b008b, 0x9a9a009a, 0xfbfb00fb, 0xb0b000b0,
231 0x74740074, 0x2b2b002b, 0xf0f000f0, 0x84840084,
232 0xdfdf00df, 0xcbcb00cb, 0x34340034, 0x76760076,
233 0x6d6d006d, 0xa9a900a9, 0xd1d100d1, 0x04040004,
234 0x14140014, 0x3a3a003a, 0xdede00de, 0x11110011,
235 0x32320032, 0x9c9c009c, 0x53530053, 0xf2f200f2,
236 0xfefe00fe, 0xcfcf00cf, 0xc3c300c3, 0x7a7a007a,
237 0x24240024, 0xe8e800e8, 0x60600060, 0x69690069,
238 0xaaaa00aa, 0xa0a000a0, 0xa1a100a1, 0x62620062,
239 0x54540054, 0x1e1e001e, 0xe0e000e0, 0x64640064,
240 0x10100010, 0x00000000, 0xa3a300a3, 0x75750075,
241 0x8a8a008a, 0xe6e600e6, 0x09090009, 0xdddd00dd,
242 0x87870087, 0x83830083, 0xcdcd00cd, 0x90900090,
243 0x73730073, 0xf6f600f6, 0x9d9d009d, 0xbfbf00bf,
244 0x52520052, 0xd8d800d8, 0xc8c800c8, 0xc6c600c6,
245 0x81810081, 0x6f6f006f, 0x13130013, 0x63630063,
246 0xe9e900e9, 0xa7a700a7, 0x9f9f009f, 0xbcbc00bc,
247 0x29290029, 0xf9f900f9, 0x2f2f002f, 0xb4b400b4,
248 0x78780078, 0x06060006, 0xe7e700e7, 0x71710071,
249 0xd4d400d4, 0xabab00ab, 0x88880088, 0x8d8d008d,
250 0x72720072, 0xb9b900b9, 0xf8f800f8, 0xacac00ac,
251 0x36360036, 0x2a2a002a, 0x3c3c003c, 0xf1f100f1,
252 0x40400040, 0xd3d300d3, 0xbbbb00bb, 0x43430043,
253 0x15150015, 0xadad00ad, 0x77770077, 0x80800080,
254 0x82820082, 0xecec00ec, 0x27270027, 0xe5e500e5,
255 0x85850085, 0x35350035, 0x0c0c000c, 0x41410041,
256 0xefef00ef, 0x93930093, 0x19190019, 0x21210021,
257 0x0e0e000e, 0x4e4e004e, 0x65650065, 0xbdbd00bd,
258 0xb8b800b8, 0x8f8f008f, 0xebeb00eb, 0xcece00ce,
259 0x30300030, 0x5f5f005f, 0xc5c500c5, 0x1a1a001a,
260 0xe1e100e1, 0xcaca00ca, 0x47470047, 0x3d3d003d,
261 0x01010001, 0xd6d600d6, 0x56560056, 0x4d4d004d,
262 0x0d0d000d, 0x66660066, 0xcccc00cc, 0x2d2d002d,
263 0x12120012, 0x20200020, 0xb1b100b1, 0x99990099,
264 0x4c4c004c, 0xc2c200c2, 0x7e7e007e, 0x05050005,
265 0xb7b700b7, 0x31310031, 0x17170017, 0xd7d700d7,
266 0x58580058, 0x61610061, 0x1b1b001b, 0x1c1c001c,
267 0x0f0f000f, 0x16160016, 0x18180018, 0x22220022,
268 0x44440044, 0xb2b200b2, 0xb5b500b5, 0x91910091,
269 0x08080008, 0xa8a800a8, 0xfcfc00fc, 0x50500050,
270 0xd0d000d0, 0x7d7d007d, 0x89890089, 0x97970097,
271 0x5b5b005b, 0x95950095, 0xffff00ff, 0xd2d200d2,
272 0xc4c400c4, 0x48480048, 0xf7f700f7, 0xdbdb00db,
273 0x03030003, 0xdada00da, 0x3f3f003f, 0x94940094,
274 0x5c5c005c, 0x02020002, 0x4a4a004a, 0x33330033,
275 0x67670067, 0xf3f300f3, 0x7f7f007f, 0xe2e200e2,
276 0x9b9b009b, 0x26260026, 0x37370037, 0x3b3b003b,
277 0x96960096, 0x4b4b004b, 0xbebe00be, 0x2e2e002e,
278 0x79790079, 0x8c8c008c, 0x6e6e006e, 0x8e8e008e,
279 0xf5f500f5, 0xb6b600b6, 0xfdfd00fd, 0x59590059,
280 0x98980098, 0x6a6a006a, 0x46460046, 0xbaba00ba,
281 0x25250025, 0x42420042, 0xa2a200a2, 0xfafa00fa,
282 0x07070007, 0x55550055, 0xeeee00ee, 0x0a0a000a,
283 0x49490049, 0x68680068, 0x38380038, 0xa4a400a4,
284 0x28280028, 0x7b7b007b, 0xc9c900c9, 0xc1c100c1,
285 0xe3e300e3, 0xf4f400f4, 0xc7c700c7, 0x9e9e009e,
286};
287
288
289#define CAMELLIA_MIN_KEY_SIZE 16
290#define CAMELLIA_MAX_KEY_SIZE 32
291#define CAMELLIA_BLOCK_SIZE 16
292#define CAMELLIA_TABLE_BYTE_LEN 272
293
294/*
295 * NB: L and R below stand for 'left' and 'right' as in written numbers.
296 * That is, in (xxxL,xxxR) pair xxxL holds most significant digits,
297 * _not_ least significant ones!
298 */
299
300
301/* key constants */
302
303#define CAMELLIA_SIGMA1L (0xA09E667FL)
304#define CAMELLIA_SIGMA1R (0x3BCC908BL)
305#define CAMELLIA_SIGMA2L (0xB67AE858L)
306#define CAMELLIA_SIGMA2R (0x4CAA73B2L)
307#define CAMELLIA_SIGMA3L (0xC6EF372FL)
308#define CAMELLIA_SIGMA3R (0xE94F82BEL)
309#define CAMELLIA_SIGMA4L (0x54FF53A5L)
310#define CAMELLIA_SIGMA4R (0xF1D36F1CL)
311#define CAMELLIA_SIGMA5L (0x10E527FAL)
312#define CAMELLIA_SIGMA5R (0xDE682D1DL)
313#define CAMELLIA_SIGMA6L (0xB05688C2L)
314#define CAMELLIA_SIGMA6R (0xB3E6C1FDL)
315
316/*
317 * macros
318 */
319#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({ \
320 w0 = ll; \
321 ll = (ll << bits) + (lr >> (32 - bits)); \
322 lr = (lr << bits) + (rl >> (32 - bits)); \
323 rl = (rl << bits) + (rr >> (32 - bits)); \
324 rr = (rr << bits) + (w0 >> (32 - bits)); \
325})
326
327#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({ \
328 w0 = ll; \
329 w1 = lr; \
330 ll = (lr << (bits - 32)) + (rl >> (64 - bits)); \
331 lr = (rl << (bits - 32)) + (rr >> (64 - bits)); \
332 rl = (rr << (bits - 32)) + (w0 >> (64 - bits)); \
333 rr = (w0 << (bits - 32)) + (w1 >> (64 - bits)); \
334})
335
336#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({ \
337 il = xl ^ kl; \
338 ir = xr ^ kr; \
339 t0 = il >> 16; \
340 t1 = ir >> 16; \
341 yl = camellia_sp1110[(u8)(ir)] \
342 ^ camellia_sp0222[(u8)(t1 >> 8)] \
343 ^ camellia_sp3033[(u8)(t1)] \
344 ^ camellia_sp4404[(u8)(ir >> 8)]; \
345 yr = camellia_sp1110[(u8)(t0 >> 8)] \
346 ^ camellia_sp0222[(u8)(t0)] \
347 ^ camellia_sp3033[(u8)(il >> 8)] \
348 ^ camellia_sp4404[(u8)(il)]; \
349 yl ^= yr; \
350 yr = ror32(yr, 8); \
351 yr ^= yl; \
352})
353
354#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
355#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
356
357static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
358{
359 u32 dw, tl, tr;
360 u32 kw4l, kw4r;
361
362 /* absorb kw2 to other subkeys */
363 /* round 2 */
364 subL[3] ^= subL[1]; subR[3] ^= subR[1];
365 /* round 4 */
366 subL[5] ^= subL[1]; subR[5] ^= subR[1];
367 /* round 6 */
368 subL[7] ^= subL[1]; subR[7] ^= subR[1];
369 subL[1] ^= subR[1] & ~subR[9];
370 dw = subL[1] & subL[9];
371 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */
372 /* round 8 */
373 subL[11] ^= subL[1]; subR[11] ^= subR[1];
374 /* round 10 */
375 subL[13] ^= subL[1]; subR[13] ^= subR[1];
376 /* round 12 */
377 subL[15] ^= subL[1]; subR[15] ^= subR[1];
378 subL[1] ^= subR[1] & ~subR[17];
379 dw = subL[1] & subL[17];
380 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */
381 /* round 14 */
382 subL[19] ^= subL[1]; subR[19] ^= subR[1];
383 /* round 16 */
384 subL[21] ^= subL[1]; subR[21] ^= subR[1];
385 /* round 18 */
386 subL[23] ^= subL[1]; subR[23] ^= subR[1];
387 if (max == 24) {
388 /* kw3 */
389 subL[24] ^= subL[1]; subR[24] ^= subR[1];
390
391 /* absorb kw4 to other subkeys */
392 kw4l = subL[25]; kw4r = subR[25];
393 } else {
394 subL[1] ^= subR[1] & ~subR[25];
395 dw = subL[1] & subL[25];
396 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */
397 /* round 20 */
398 subL[27] ^= subL[1]; subR[27] ^= subR[1];
399 /* round 22 */
400 subL[29] ^= subL[1]; subR[29] ^= subR[1];
401 /* round 24 */
402 subL[31] ^= subL[1]; subR[31] ^= subR[1];
403 /* kw3 */
404 subL[32] ^= subL[1]; subR[32] ^= subR[1];
405
406 /* absorb kw4 to other subkeys */
407 kw4l = subL[33]; kw4r = subR[33];
408 /* round 23 */
409 subL[30] ^= kw4l; subR[30] ^= kw4r;
410 /* round 21 */
411 subL[28] ^= kw4l; subR[28] ^= kw4r;
412 /* round 19 */
413 subL[26] ^= kw4l; subR[26] ^= kw4r;
414 kw4l ^= kw4r & ~subR[24];
415 dw = kw4l & subL[24];
416 kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */
417 }
418 /* round 17 */
419 subL[22] ^= kw4l; subR[22] ^= kw4r;
420 /* round 15 */
421 subL[20] ^= kw4l; subR[20] ^= kw4r;
422 /* round 13 */
423 subL[18] ^= kw4l; subR[18] ^= kw4r;
424 kw4l ^= kw4r & ~subR[16];
425 dw = kw4l & subL[16];
426 kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */
427 /* round 11 */
428 subL[14] ^= kw4l; subR[14] ^= kw4r;
429 /* round 9 */
430 subL[12] ^= kw4l; subR[12] ^= kw4r;
431 /* round 7 */
432 subL[10] ^= kw4l; subR[10] ^= kw4r;
433 kw4l ^= kw4r & ~subR[8];
434 dw = kw4l & subL[8];
435 kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */
436 /* round 5 */
437 subL[6] ^= kw4l; subR[6] ^= kw4r;
438 /* round 3 */
439 subL[4] ^= kw4l; subR[4] ^= kw4r;
440 /* round 1 */
441 subL[2] ^= kw4l; subR[2] ^= kw4r;
442 /* kw1 */
443 subL[0] ^= kw4l; subR[0] ^= kw4r;
444
445 /* key XOR is end of F-function */
446 SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */
447 SUBKEY_R(0) = subR[0] ^ subR[2];
448 SUBKEY_L(2) = subL[3]; /* round 1 */
449 SUBKEY_R(2) = subR[3];
450 SUBKEY_L(3) = subL[2] ^ subL[4]; /* round 2 */
451 SUBKEY_R(3) = subR[2] ^ subR[4];
452 SUBKEY_L(4) = subL[3] ^ subL[5]; /* round 3 */
453 SUBKEY_R(4) = subR[3] ^ subR[5];
454 SUBKEY_L(5) = subL[4] ^ subL[6]; /* round 4 */
455 SUBKEY_R(5) = subR[4] ^ subR[6];
456 SUBKEY_L(6) = subL[5] ^ subL[7]; /* round 5 */
457 SUBKEY_R(6) = subR[5] ^ subR[7];
458 tl = subL[10] ^ (subR[10] & ~subR[8]);
459 dw = tl & subL[8]; /* FL(kl1) */
460 tr = subR[10] ^ rol32(dw, 1);
461 SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
462 SUBKEY_R(7) = subR[6] ^ tr;
463 SUBKEY_L(8) = subL[8]; /* FL(kl1) */
464 SUBKEY_R(8) = subR[8];
465 SUBKEY_L(9) = subL[9]; /* FLinv(kl2) */
466 SUBKEY_R(9) = subR[9];
467 tl = subL[7] ^ (subR[7] & ~subR[9]);
468 dw = tl & subL[9]; /* FLinv(kl2) */
469 tr = subR[7] ^ rol32(dw, 1);
470 SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
471 SUBKEY_R(10) = tr ^ subR[11];
472 SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
473 SUBKEY_R(11) = subR[10] ^ subR[12];
474 SUBKEY_L(12) = subL[11] ^ subL[13]; /* round 9 */
475 SUBKEY_R(12) = subR[11] ^ subR[13];
476 SUBKEY_L(13) = subL[12] ^ subL[14]; /* round 10 */
477 SUBKEY_R(13) = subR[12] ^ subR[14];
478 SUBKEY_L(14) = subL[13] ^ subL[15]; /* round 11 */
479 SUBKEY_R(14) = subR[13] ^ subR[15];
480 tl = subL[18] ^ (subR[18] & ~subR[16]);
481 dw = tl & subL[16]; /* FL(kl3) */
482 tr = subR[18] ^ rol32(dw, 1);
483 SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
484 SUBKEY_R(15) = subR[14] ^ tr;
485 SUBKEY_L(16) = subL[16]; /* FL(kl3) */
486 SUBKEY_R(16) = subR[16];
487 SUBKEY_L(17) = subL[17]; /* FLinv(kl4) */
488 SUBKEY_R(17) = subR[17];
489 tl = subL[15] ^ (subR[15] & ~subR[17]);
490 dw = tl & subL[17]; /* FLinv(kl4) */
491 tr = subR[15] ^ rol32(dw, 1);
492 SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
493 SUBKEY_R(18) = tr ^ subR[19];
494 SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
495 SUBKEY_R(19) = subR[18] ^ subR[20];
496 SUBKEY_L(20) = subL[19] ^ subL[21]; /* round 15 */
497 SUBKEY_R(20) = subR[19] ^ subR[21];
498 SUBKEY_L(21) = subL[20] ^ subL[22]; /* round 16 */
499 SUBKEY_R(21) = subR[20] ^ subR[22];
500 SUBKEY_L(22) = subL[21] ^ subL[23]; /* round 17 */
501 SUBKEY_R(22) = subR[21] ^ subR[23];
502 if (max == 24) {
503 SUBKEY_L(23) = subL[22]; /* round 18 */
504 SUBKEY_R(23) = subR[22];
505 SUBKEY_L(24) = subL[24] ^ subL[23]; /* kw3 */
506 SUBKEY_R(24) = subR[24] ^ subR[23];
507 } else {
508 tl = subL[26] ^ (subR[26] & ~subR[24]);
509 dw = tl & subL[24]; /* FL(kl5) */
510 tr = subR[26] ^ rol32(dw, 1);
511 SUBKEY_L(23) = subL[22] ^ tl; /* round 18 */
512 SUBKEY_R(23) = subR[22] ^ tr;
513 SUBKEY_L(24) = subL[24]; /* FL(kl5) */
514 SUBKEY_R(24) = subR[24];
515 SUBKEY_L(25) = subL[25]; /* FLinv(kl6) */
516 SUBKEY_R(25) = subR[25];
517 tl = subL[23] ^ (subR[23] & ~subR[25]);
518 dw = tl & subL[25]; /* FLinv(kl6) */
519 tr = subR[23] ^ rol32(dw, 1);
520 SUBKEY_L(26) = tl ^ subL[27]; /* round 19 */
521 SUBKEY_R(26) = tr ^ subR[27];
522 SUBKEY_L(27) = subL[26] ^ subL[28]; /* round 20 */
523 SUBKEY_R(27) = subR[26] ^ subR[28];
524 SUBKEY_L(28) = subL[27] ^ subL[29]; /* round 21 */
525 SUBKEY_R(28) = subR[27] ^ subR[29];
526 SUBKEY_L(29) = subL[28] ^ subL[30]; /* round 22 */
527 SUBKEY_R(29) = subR[28] ^ subR[30];
528 SUBKEY_L(30) = subL[29] ^ subL[31]; /* round 23 */
529 SUBKEY_R(30) = subR[29] ^ subR[31];
530 SUBKEY_L(31) = subL[30]; /* round 24 */
531 SUBKEY_R(31) = subR[30];
532 SUBKEY_L(32) = subL[32] ^ subL[31]; /* kw3 */
533 SUBKEY_R(32) = subR[32] ^ subR[31];
534 }
535}
536
537static void camellia_setup128(const unsigned char *key, u32 *subkey)
538{
539 u32 kll, klr, krl, krr;
540 u32 il, ir, t0, t1, w0, w1;
541 u32 subL[26];
542 u32 subR[26];
543
544 /**
545 * k == kll || klr || krl || krr (|| is concatenation)
546 */
547 kll = get_unaligned_be32(key);
548 klr = get_unaligned_be32(key + 4);
549 krl = get_unaligned_be32(key + 8);
550 krr = get_unaligned_be32(key + 12);
551
552 /* generate KL dependent subkeys */
553 /* kw1 */
554 subL[0] = kll; subR[0] = klr;
555 /* kw2 */
556 subL[1] = krl; subR[1] = krr;
557 /* rotation left shift 15bit */
558 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
559 /* k3 */
560 subL[4] = kll; subR[4] = klr;
561 /* k4 */
562 subL[5] = krl; subR[5] = krr;
563 /* rotation left shift 15+30bit */
564 ROLDQ(kll, klr, krl, krr, w0, w1, 30);
565 /* k7 */
566 subL[10] = kll; subR[10] = klr;
567 /* k8 */
568 subL[11] = krl; subR[11] = krr;
569 /* rotation left shift 15+30+15bit */
570 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
571 /* k10 */
572 subL[13] = krl; subR[13] = krr;
573 /* rotation left shift 15+30+15+17 bit */
574 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
575 /* kl3 */
576 subL[16] = kll; subR[16] = klr;
577 /* kl4 */
578 subL[17] = krl; subR[17] = krr;
579 /* rotation left shift 15+30+15+17+17 bit */
580 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
581 /* k13 */
582 subL[18] = kll; subR[18] = klr;
583 /* k14 */
584 subL[19] = krl; subR[19] = krr;
585 /* rotation left shift 15+30+15+17+17+17 bit */
586 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
587 /* k17 */
588 subL[22] = kll; subR[22] = klr;
589 /* k18 */
590 subL[23] = krl; subR[23] = krr;
591
592 /* generate KA */
593 kll = subL[0]; klr = subR[0];
594 krl = subL[1]; krr = subR[1];
595 CAMELLIA_F(kll, klr,
596 CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
597 w0, w1, il, ir, t0, t1);
598 krl ^= w0; krr ^= w1;
599 CAMELLIA_F(krl, krr,
600 CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
601 kll, klr, il, ir, t0, t1);
602 /* current status == (kll, klr, w0, w1) */
603 CAMELLIA_F(kll, klr,
604 CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
605 krl, krr, il, ir, t0, t1);
606 krl ^= w0; krr ^= w1;
607 CAMELLIA_F(krl, krr,
608 CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
609 w0, w1, il, ir, t0, t1);
610 kll ^= w0; klr ^= w1;
611
612 /* generate KA dependent subkeys */
613 /* k1, k2 */
614 subL[2] = kll; subR[2] = klr;
615 subL[3] = krl; subR[3] = krr;
616 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
617 /* k5,k6 */
618 subL[6] = kll; subR[6] = klr;
619 subL[7] = krl; subR[7] = krr;
620 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
621 /* kl1, kl2 */
622 subL[8] = kll; subR[8] = klr;
623 subL[9] = krl; subR[9] = krr;
624 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
625 /* k9 */
626 subL[12] = kll; subR[12] = klr;
627 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
628 /* k11, k12 */
629 subL[14] = kll; subR[14] = klr;
630 subL[15] = krl; subR[15] = krr;
631 ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
632 /* k15, k16 */
633 subL[20] = kll; subR[20] = klr;
634 subL[21] = krl; subR[21] = krr;
635 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
636 /* kw3, kw4 */
637 subL[24] = kll; subR[24] = klr;
638 subL[25] = krl; subR[25] = krr;
639
640 camellia_setup_tail(subkey, subL, subR, 24);
641}
642
643static void camellia_setup256(const unsigned char *key, u32 *subkey)
644{
645 u32 kll, klr, krl, krr; /* left half of key */
646 u32 krll, krlr, krrl, krrr; /* right half of key */
647 u32 il, ir, t0, t1, w0, w1; /* temporary variables */
648 u32 subL[34];
649 u32 subR[34];
650
651 /**
652 * key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
653 * (|| is concatenation)
654 */
655 kll = get_unaligned_be32(key);
656 klr = get_unaligned_be32(key + 4);
657 krl = get_unaligned_be32(key + 8);
658 krr = get_unaligned_be32(key + 12);
659 krll = get_unaligned_be32(key + 16);
660 krlr = get_unaligned_be32(key + 20);
661 krrl = get_unaligned_be32(key + 24);
662 krrr = get_unaligned_be32(key + 28);
663
664 /* generate KL dependent subkeys */
665 /* kw1 */
666 subL[0] = kll; subR[0] = klr;
667 /* kw2 */
668 subL[1] = krl; subR[1] = krr;
669 ROLDQo32(kll, klr, krl, krr, w0, w1, 45);
670 /* k9 */
671 subL[12] = kll; subR[12] = klr;
672 /* k10 */
673 subL[13] = krl; subR[13] = krr;
674 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
675 /* kl3 */
676 subL[16] = kll; subR[16] = klr;
677 /* kl4 */
678 subL[17] = krl; subR[17] = krr;
679 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
680 /* k17 */
681 subL[22] = kll; subR[22] = klr;
682 /* k18 */
683 subL[23] = krl; subR[23] = krr;
684 ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
685 /* k23 */
686 subL[30] = kll; subR[30] = klr;
687 /* k24 */
688 subL[31] = krl; subR[31] = krr;
689
690 /* generate KR dependent subkeys */
691 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
692 /* k3 */
693 subL[4] = krll; subR[4] = krlr;
694 /* k4 */
695 subL[5] = krrl; subR[5] = krrr;
696 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
697 /* kl1 */
698 subL[8] = krll; subR[8] = krlr;
699 /* kl2 */
700 subL[9] = krrl; subR[9] = krrr;
701 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
702 /* k13 */
703 subL[18] = krll; subR[18] = krlr;
704 /* k14 */
705 subL[19] = krrl; subR[19] = krrr;
706 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
707 /* k19 */
708 subL[26] = krll; subR[26] = krlr;
709 /* k20 */
710 subL[27] = krrl; subR[27] = krrr;
711 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
712
713 /* generate KA */
714 kll = subL[0] ^ krll; klr = subR[0] ^ krlr;
715 krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;
716 CAMELLIA_F(kll, klr,
717 CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
718 w0, w1, il, ir, t0, t1);
719 krl ^= w0; krr ^= w1;
720 CAMELLIA_F(krl, krr,
721 CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
722 kll, klr, il, ir, t0, t1);
723 kll ^= krll; klr ^= krlr;
724 CAMELLIA_F(kll, klr,
725 CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
726 krl, krr, il, ir, t0, t1);
727 krl ^= w0 ^ krrl; krr ^= w1 ^ krrr;
728 CAMELLIA_F(krl, krr,
729 CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
730 w0, w1, il, ir, t0, t1);
731 kll ^= w0; klr ^= w1;
732
733 /* generate KB */
734 krll ^= kll; krlr ^= klr;
735 krrl ^= krl; krrr ^= krr;
736 CAMELLIA_F(krll, krlr,
737 CAMELLIA_SIGMA5L, CAMELLIA_SIGMA5R,
738 w0, w1, il, ir, t0, t1);
739 krrl ^= w0; krrr ^= w1;
740 CAMELLIA_F(krrl, krrr,
741 CAMELLIA_SIGMA6L, CAMELLIA_SIGMA6R,
742 w0, w1, il, ir, t0, t1);
743 krll ^= w0; krlr ^= w1;
744
745 /* generate KA dependent subkeys */
746 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
747 /* k5 */
748 subL[6] = kll; subR[6] = klr;
749 /* k6 */
750 subL[7] = krl; subR[7] = krr;
751 ROLDQ(kll, klr, krl, krr, w0, w1, 30);
752 /* k11 */
753 subL[14] = kll; subR[14] = klr;
754 /* k12 */
755 subL[15] = krl; subR[15] = krr;
756 /* rotation left shift 32bit */
757 /* kl5 */
758 subL[24] = klr; subR[24] = krl;
759 /* kl6 */
760 subL[25] = krr; subR[25] = kll;
761 /* rotation left shift 49 from k11,k12 -> k21,k22 */
762 ROLDQo32(kll, klr, krl, krr, w0, w1, 49);
763 /* k21 */
764 subL[28] = kll; subR[28] = klr;
765 /* k22 */
766 subL[29] = krl; subR[29] = krr;
767
768 /* generate KB dependent subkeys */
769 /* k1 */
770 subL[2] = krll; subR[2] = krlr;
771 /* k2 */
772 subL[3] = krrl; subR[3] = krrr;
773 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
774 /* k7 */
775 subL[10] = krll; subR[10] = krlr;
776 /* k8 */
777 subL[11] = krrl; subR[11] = krrr;
778 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
779 /* k15 */
780 subL[20] = krll; subR[20] = krlr;
781 /* k16 */
782 subL[21] = krrl; subR[21] = krrr;
783 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 51);
784 /* kw3 */
785 subL[32] = krll; subR[32] = krlr;
786 /* kw4 */
787 subL[33] = krrl; subR[33] = krrr;
788
789 camellia_setup_tail(subkey, subL, subR, 32);
790}
791
792static void camellia_setup192(const unsigned char *key, u32 *subkey)
793{
794 unsigned char kk[32];
795 u32 krll, krlr, krrl, krrr;
796
797 memcpy(kk, key, 24);
798 memcpy((unsigned char *)&krll, key+16, 4);
799 memcpy((unsigned char *)&krlr, key+20, 4);
800 krrl = ~krll;
801 krrr = ~krlr;
802 memcpy(kk+24, (unsigned char *)&krrl, 4);
803 memcpy(kk+28, (unsigned char *)&krrr, 4);
804 camellia_setup256(kk, subkey);
805}
806
807
808/*
809 * Encrypt/decrypt
810 */
811#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \
812 t0 = kll; \
813 t2 = krr; \
814 t0 &= ll; \
815 t2 |= rr; \
816 rl ^= t2; \
817 lr ^= rol32(t0, 1); \
818 t3 = krl; \
819 t1 = klr; \
820 t3 &= rl; \
821 t1 |= lr; \
822 ll ^= t1; \
823 rr ^= rol32(t3, 1); \
824})
825
826#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({ \
827 yl ^= kl; \
828 yr ^= kr; \
829 ir = camellia_sp1110[(u8)xr]; \
830 il = camellia_sp1110[(u8)(xl >> 24)]; \
831 ir ^= camellia_sp0222[(u8)(xr >> 24)]; \
832 il ^= camellia_sp0222[(u8)(xl >> 16)]; \
833 ir ^= camellia_sp3033[(u8)(xr >> 16)]; \
834 il ^= camellia_sp3033[(u8)(xl >> 8)]; \
835 ir ^= camellia_sp4404[(u8)(xr >> 8)]; \
836 il ^= camellia_sp4404[(u8)xl]; \
837 ir ^= il; \
838 yl ^= ir; \
839 yr ^= ror32(il, 8) ^ ir; \
840})
841
842/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
843static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
844{
845 u32 il, ir, t0, t1; /* temporary variables */
846
847 /* pre whitening but absorb kw2 */
848 io[0] ^= SUBKEY_L(0);
849 io[1] ^= SUBKEY_R(0);
850
851 /* main iteration */
852#define ROUNDS(i) ({ \
853 CAMELLIA_ROUNDSM(io[0], io[1], \
854 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
855 io[2], io[3], il, ir); \
856 CAMELLIA_ROUNDSM(io[2], io[3], \
857 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
858 io[0], io[1], il, ir); \
859 CAMELLIA_ROUNDSM(io[0], io[1], \
860 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
861 io[2], io[3], il, ir); \
862 CAMELLIA_ROUNDSM(io[2], io[3], \
863 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
864 io[0], io[1], il, ir); \
865 CAMELLIA_ROUNDSM(io[0], io[1], \
866 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
867 io[2], io[3], il, ir); \
868 CAMELLIA_ROUNDSM(io[2], io[3], \
869 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
870 io[0], io[1], il, ir); \
871})
872#define FLS(i) ({ \
873 CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
874 SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
875 SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
876 t0, t1, il, ir); \
877})
878
879 ROUNDS(0);
880 FLS(8);
881 ROUNDS(8);
882 FLS(16);
883 ROUNDS(16);
884 if (max == 32) {
885 FLS(24);
886 ROUNDS(24);
887 }
888
889#undef ROUNDS
890#undef FLS
891
892 /* post whitening but kw4 */
893 io[2] ^= SUBKEY_L(max);
894 io[3] ^= SUBKEY_R(max);
895 /* NB: io[0],[1] should be swapped with [2],[3] by caller! */
896}
897
898static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
899{
900 u32 il, ir, t0, t1; /* temporary variables */
901
902 /* pre whitening but absorb kw2 */
903 io[0] ^= SUBKEY_L(i);
904 io[1] ^= SUBKEY_R(i);
905
906 /* main iteration */
907#define ROUNDS(i) ({ \
908 CAMELLIA_ROUNDSM(io[0], io[1], \
909 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
910 io[2], io[3], il, ir); \
911 CAMELLIA_ROUNDSM(io[2], io[3], \
912 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
913 io[0], io[1], il, ir); \
914 CAMELLIA_ROUNDSM(io[0], io[1], \
915 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
916 io[2], io[3], il, ir); \
917 CAMELLIA_ROUNDSM(io[2], io[3], \
918 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
919 io[0], io[1], il, ir); \
920 CAMELLIA_ROUNDSM(io[0], io[1], \
921 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
922 io[2], io[3], il, ir); \
923 CAMELLIA_ROUNDSM(io[2], io[3], \
924 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
925 io[0], io[1], il, ir); \
926})
927#define FLS(i) ({ \
928 CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
929 SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
930 SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
931 t0, t1, il, ir); \
932})
933
934 if (i == 32) {
935 ROUNDS(24);
936 FLS(24);
937 }
938 ROUNDS(16);
939 FLS(16);
940 ROUNDS(8);
941 FLS(8);
942 ROUNDS(0);
943
944#undef ROUNDS
945#undef FLS
946
947 /* post whitening but kw4 */
948 io[2] ^= SUBKEY_L(0);
949 io[3] ^= SUBKEY_R(0);
950 /* NB: 0,1 should be swapped with 2,3 by caller! */
951}
952
953
954struct camellia_ctx {
955 int key_length;
956 u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];
957};
958
959static int
960camellia_set_key(struct crypto_tfm *tfm, const u8 *in_key,
961 unsigned int key_len)
962{
963 struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
964 const unsigned char *key = (const unsigned char *)in_key;
965
966 if (key_len != 16 && key_len != 24 && key_len != 32)
967 return -EINVAL;
968
969 cctx->key_length = key_len;
970
971 switch (key_len) {
972 case 16:
973 camellia_setup128(key, cctx->key_table);
974 break;
975 case 24:
976 camellia_setup192(key, cctx->key_table);
977 break;
978 case 32:
979 camellia_setup256(key, cctx->key_table);
980 break;
981 }
982
983 return 0;
984}
985
986static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
987{
988 const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
989 unsigned int max;
990
991 u32 tmp[4];
992
993 tmp[0] = get_unaligned_be32(in);
994 tmp[1] = get_unaligned_be32(in + 4);
995 tmp[2] = get_unaligned_be32(in + 8);
996 tmp[3] = get_unaligned_be32(in + 12);
997
998 if (cctx->key_length == 16)
999 max = 24;
1000 else
1001 max = 32; /* for key lengths of 24 and 32 */
1002
1003 camellia_do_encrypt(cctx->key_table, tmp, max);
1004
1005 /* do_encrypt returns 0,1 swapped with 2,3 */
1006 put_unaligned_be32(tmp[2], out);
1007 put_unaligned_be32(tmp[3], out + 4);
1008 put_unaligned_be32(tmp[0], out + 8);
1009 put_unaligned_be32(tmp[1], out + 12);
1010}
1011
1012static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
1013{
1014 const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1015 unsigned int max;
1016
1017 u32 tmp[4];
1018
1019 tmp[0] = get_unaligned_be32(in);
1020 tmp[1] = get_unaligned_be32(in + 4);
1021 tmp[2] = get_unaligned_be32(in + 8);
1022 tmp[3] = get_unaligned_be32(in + 12);
1023
1024 if (cctx->key_length == 16)
1025 max = 24;
1026 else
1027 max = 32; /* for key lengths of 24 and 32 */
1028
1029 camellia_do_decrypt(cctx->key_table, tmp, max);
1030
1031 /* do_decrypt returns 0,1 swapped with 2,3 */
1032 put_unaligned_be32(tmp[2], out);
1033 put_unaligned_be32(tmp[3], out + 4);
1034 put_unaligned_be32(tmp[0], out + 8);
1035 put_unaligned_be32(tmp[1], out + 12);
1036}
1037
1038static struct crypto_alg camellia_alg = {
1039 .cra_name = "camellia",
1040 .cra_driver_name = "camellia-generic",
1041 .cra_priority = 100,
1042 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
1043 .cra_blocksize = CAMELLIA_BLOCK_SIZE,
1044 .cra_ctxsize = sizeof(struct camellia_ctx),
1045 .cra_module = THIS_MODULE,
1046 .cra_u = {
1047 .cipher = {
1048 .cia_min_keysize = CAMELLIA_MIN_KEY_SIZE,
1049 .cia_max_keysize = CAMELLIA_MAX_KEY_SIZE,
1050 .cia_setkey = camellia_set_key,
1051 .cia_encrypt = camellia_encrypt,
1052 .cia_decrypt = camellia_decrypt
1053 }
1054 }
1055};
1056
1057static int __init camellia_init(void)
1058{
1059 return crypto_register_alg(&camellia_alg);
1060}
1061
1062static void __exit camellia_fini(void)
1063{
1064 crypto_unregister_alg(&camellia_alg);
1065}
1066
1067subsys_initcall(camellia_init);
1068module_exit(camellia_fini);
1069
1070MODULE_DESCRIPTION("Camellia Cipher Algorithm");
1071MODULE_LICENSE("GPL");
1072MODULE_ALIAS_CRYPTO("camellia");
1073MODULE_ALIAS_CRYPTO("camellia-generic");
1/*
2 * Copyright (C) 2006
3 * NTT (Nippon Telegraph and Telephone Corporation).
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19/*
20 * Algorithm Specification
21 * http://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html
22 */
23
24/*
25 *
26 * NOTE --- NOTE --- NOTE --- NOTE
27 * This implementation assumes that all memory addresses passed
28 * as parameters are four-byte aligned.
29 *
30 */
31
32#include <linux/crypto.h>
33#include <linux/errno.h>
34#include <linux/init.h>
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/bitops.h>
38#include <asm/unaligned.h>
39
40static const u32 camellia_sp1110[256] = {
41 0x70707000, 0x82828200, 0x2c2c2c00, 0xececec00,
42 0xb3b3b300, 0x27272700, 0xc0c0c000, 0xe5e5e500,
43 0xe4e4e400, 0x85858500, 0x57575700, 0x35353500,
44 0xeaeaea00, 0x0c0c0c00, 0xaeaeae00, 0x41414100,
45 0x23232300, 0xefefef00, 0x6b6b6b00, 0x93939300,
46 0x45454500, 0x19191900, 0xa5a5a500, 0x21212100,
47 0xededed00, 0x0e0e0e00, 0x4f4f4f00, 0x4e4e4e00,
48 0x1d1d1d00, 0x65656500, 0x92929200, 0xbdbdbd00,
49 0x86868600, 0xb8b8b800, 0xafafaf00, 0x8f8f8f00,
50 0x7c7c7c00, 0xebebeb00, 0x1f1f1f00, 0xcecece00,
51 0x3e3e3e00, 0x30303000, 0xdcdcdc00, 0x5f5f5f00,
52 0x5e5e5e00, 0xc5c5c500, 0x0b0b0b00, 0x1a1a1a00,
53 0xa6a6a600, 0xe1e1e100, 0x39393900, 0xcacaca00,
54 0xd5d5d500, 0x47474700, 0x5d5d5d00, 0x3d3d3d00,
55 0xd9d9d900, 0x01010100, 0x5a5a5a00, 0xd6d6d600,
56 0x51515100, 0x56565600, 0x6c6c6c00, 0x4d4d4d00,
57 0x8b8b8b00, 0x0d0d0d00, 0x9a9a9a00, 0x66666600,
58 0xfbfbfb00, 0xcccccc00, 0xb0b0b000, 0x2d2d2d00,
59 0x74747400, 0x12121200, 0x2b2b2b00, 0x20202000,
60 0xf0f0f000, 0xb1b1b100, 0x84848400, 0x99999900,
61 0xdfdfdf00, 0x4c4c4c00, 0xcbcbcb00, 0xc2c2c200,
62 0x34343400, 0x7e7e7e00, 0x76767600, 0x05050500,
63 0x6d6d6d00, 0xb7b7b700, 0xa9a9a900, 0x31313100,
64 0xd1d1d100, 0x17171700, 0x04040400, 0xd7d7d700,
65 0x14141400, 0x58585800, 0x3a3a3a00, 0x61616100,
66 0xdedede00, 0x1b1b1b00, 0x11111100, 0x1c1c1c00,
67 0x32323200, 0x0f0f0f00, 0x9c9c9c00, 0x16161600,
68 0x53535300, 0x18181800, 0xf2f2f200, 0x22222200,
69 0xfefefe00, 0x44444400, 0xcfcfcf00, 0xb2b2b200,
70 0xc3c3c300, 0xb5b5b500, 0x7a7a7a00, 0x91919100,
71 0x24242400, 0x08080800, 0xe8e8e800, 0xa8a8a800,
72 0x60606000, 0xfcfcfc00, 0x69696900, 0x50505000,
73 0xaaaaaa00, 0xd0d0d000, 0xa0a0a000, 0x7d7d7d00,
74 0xa1a1a100, 0x89898900, 0x62626200, 0x97979700,
75 0x54545400, 0x5b5b5b00, 0x1e1e1e00, 0x95959500,
76 0xe0e0e000, 0xffffff00, 0x64646400, 0xd2d2d200,
77 0x10101000, 0xc4c4c400, 0x00000000, 0x48484800,
78 0xa3a3a300, 0xf7f7f700, 0x75757500, 0xdbdbdb00,
79 0x8a8a8a00, 0x03030300, 0xe6e6e600, 0xdadada00,
80 0x09090900, 0x3f3f3f00, 0xdddddd00, 0x94949400,
81 0x87878700, 0x5c5c5c00, 0x83838300, 0x02020200,
82 0xcdcdcd00, 0x4a4a4a00, 0x90909000, 0x33333300,
83 0x73737300, 0x67676700, 0xf6f6f600, 0xf3f3f300,
84 0x9d9d9d00, 0x7f7f7f00, 0xbfbfbf00, 0xe2e2e200,
85 0x52525200, 0x9b9b9b00, 0xd8d8d800, 0x26262600,
86 0xc8c8c800, 0x37373700, 0xc6c6c600, 0x3b3b3b00,
87 0x81818100, 0x96969600, 0x6f6f6f00, 0x4b4b4b00,
88 0x13131300, 0xbebebe00, 0x63636300, 0x2e2e2e00,
89 0xe9e9e900, 0x79797900, 0xa7a7a700, 0x8c8c8c00,
90 0x9f9f9f00, 0x6e6e6e00, 0xbcbcbc00, 0x8e8e8e00,
91 0x29292900, 0xf5f5f500, 0xf9f9f900, 0xb6b6b600,
92 0x2f2f2f00, 0xfdfdfd00, 0xb4b4b400, 0x59595900,
93 0x78787800, 0x98989800, 0x06060600, 0x6a6a6a00,
94 0xe7e7e700, 0x46464600, 0x71717100, 0xbababa00,
95 0xd4d4d400, 0x25252500, 0xababab00, 0x42424200,
96 0x88888800, 0xa2a2a200, 0x8d8d8d00, 0xfafafa00,
97 0x72727200, 0x07070700, 0xb9b9b900, 0x55555500,
98 0xf8f8f800, 0xeeeeee00, 0xacacac00, 0x0a0a0a00,
99 0x36363600, 0x49494900, 0x2a2a2a00, 0x68686800,
100 0x3c3c3c00, 0x38383800, 0xf1f1f100, 0xa4a4a400,
101 0x40404000, 0x28282800, 0xd3d3d300, 0x7b7b7b00,
102 0xbbbbbb00, 0xc9c9c900, 0x43434300, 0xc1c1c100,
103 0x15151500, 0xe3e3e300, 0xadadad00, 0xf4f4f400,
104 0x77777700, 0xc7c7c700, 0x80808000, 0x9e9e9e00,
105};
106
107static const u32 camellia_sp0222[256] = {
108 0x00e0e0e0, 0x00050505, 0x00585858, 0x00d9d9d9,
109 0x00676767, 0x004e4e4e, 0x00818181, 0x00cbcbcb,
110 0x00c9c9c9, 0x000b0b0b, 0x00aeaeae, 0x006a6a6a,
111 0x00d5d5d5, 0x00181818, 0x005d5d5d, 0x00828282,
112 0x00464646, 0x00dfdfdf, 0x00d6d6d6, 0x00272727,
113 0x008a8a8a, 0x00323232, 0x004b4b4b, 0x00424242,
114 0x00dbdbdb, 0x001c1c1c, 0x009e9e9e, 0x009c9c9c,
115 0x003a3a3a, 0x00cacaca, 0x00252525, 0x007b7b7b,
116 0x000d0d0d, 0x00717171, 0x005f5f5f, 0x001f1f1f,
117 0x00f8f8f8, 0x00d7d7d7, 0x003e3e3e, 0x009d9d9d,
118 0x007c7c7c, 0x00606060, 0x00b9b9b9, 0x00bebebe,
119 0x00bcbcbc, 0x008b8b8b, 0x00161616, 0x00343434,
120 0x004d4d4d, 0x00c3c3c3, 0x00727272, 0x00959595,
121 0x00ababab, 0x008e8e8e, 0x00bababa, 0x007a7a7a,
122 0x00b3b3b3, 0x00020202, 0x00b4b4b4, 0x00adadad,
123 0x00a2a2a2, 0x00acacac, 0x00d8d8d8, 0x009a9a9a,
124 0x00171717, 0x001a1a1a, 0x00353535, 0x00cccccc,
125 0x00f7f7f7, 0x00999999, 0x00616161, 0x005a5a5a,
126 0x00e8e8e8, 0x00242424, 0x00565656, 0x00404040,
127 0x00e1e1e1, 0x00636363, 0x00090909, 0x00333333,
128 0x00bfbfbf, 0x00989898, 0x00979797, 0x00858585,
129 0x00686868, 0x00fcfcfc, 0x00ececec, 0x000a0a0a,
130 0x00dadada, 0x006f6f6f, 0x00535353, 0x00626262,
131 0x00a3a3a3, 0x002e2e2e, 0x00080808, 0x00afafaf,
132 0x00282828, 0x00b0b0b0, 0x00747474, 0x00c2c2c2,
133 0x00bdbdbd, 0x00363636, 0x00222222, 0x00383838,
134 0x00646464, 0x001e1e1e, 0x00393939, 0x002c2c2c,
135 0x00a6a6a6, 0x00303030, 0x00e5e5e5, 0x00444444,
136 0x00fdfdfd, 0x00888888, 0x009f9f9f, 0x00656565,
137 0x00878787, 0x006b6b6b, 0x00f4f4f4, 0x00232323,
138 0x00484848, 0x00101010, 0x00d1d1d1, 0x00515151,
139 0x00c0c0c0, 0x00f9f9f9, 0x00d2d2d2, 0x00a0a0a0,
140 0x00555555, 0x00a1a1a1, 0x00414141, 0x00fafafa,
141 0x00434343, 0x00131313, 0x00c4c4c4, 0x002f2f2f,
142 0x00a8a8a8, 0x00b6b6b6, 0x003c3c3c, 0x002b2b2b,
143 0x00c1c1c1, 0x00ffffff, 0x00c8c8c8, 0x00a5a5a5,
144 0x00202020, 0x00898989, 0x00000000, 0x00909090,
145 0x00474747, 0x00efefef, 0x00eaeaea, 0x00b7b7b7,
146 0x00151515, 0x00060606, 0x00cdcdcd, 0x00b5b5b5,
147 0x00121212, 0x007e7e7e, 0x00bbbbbb, 0x00292929,
148 0x000f0f0f, 0x00b8b8b8, 0x00070707, 0x00040404,
149 0x009b9b9b, 0x00949494, 0x00212121, 0x00666666,
150 0x00e6e6e6, 0x00cecece, 0x00ededed, 0x00e7e7e7,
151 0x003b3b3b, 0x00fefefe, 0x007f7f7f, 0x00c5c5c5,
152 0x00a4a4a4, 0x00373737, 0x00b1b1b1, 0x004c4c4c,
153 0x00919191, 0x006e6e6e, 0x008d8d8d, 0x00767676,
154 0x00030303, 0x002d2d2d, 0x00dedede, 0x00969696,
155 0x00262626, 0x007d7d7d, 0x00c6c6c6, 0x005c5c5c,
156 0x00d3d3d3, 0x00f2f2f2, 0x004f4f4f, 0x00191919,
157 0x003f3f3f, 0x00dcdcdc, 0x00797979, 0x001d1d1d,
158 0x00525252, 0x00ebebeb, 0x00f3f3f3, 0x006d6d6d,
159 0x005e5e5e, 0x00fbfbfb, 0x00696969, 0x00b2b2b2,
160 0x00f0f0f0, 0x00313131, 0x000c0c0c, 0x00d4d4d4,
161 0x00cfcfcf, 0x008c8c8c, 0x00e2e2e2, 0x00757575,
162 0x00a9a9a9, 0x004a4a4a, 0x00575757, 0x00848484,
163 0x00111111, 0x00454545, 0x001b1b1b, 0x00f5f5f5,
164 0x00e4e4e4, 0x000e0e0e, 0x00737373, 0x00aaaaaa,
165 0x00f1f1f1, 0x00dddddd, 0x00595959, 0x00141414,
166 0x006c6c6c, 0x00929292, 0x00545454, 0x00d0d0d0,
167 0x00787878, 0x00707070, 0x00e3e3e3, 0x00494949,
168 0x00808080, 0x00505050, 0x00a7a7a7, 0x00f6f6f6,
169 0x00777777, 0x00939393, 0x00868686, 0x00838383,
170 0x002a2a2a, 0x00c7c7c7, 0x005b5b5b, 0x00e9e9e9,
171 0x00eeeeee, 0x008f8f8f, 0x00010101, 0x003d3d3d,
172};
173
174static const u32 camellia_sp3033[256] = {
175 0x38003838, 0x41004141, 0x16001616, 0x76007676,
176 0xd900d9d9, 0x93009393, 0x60006060, 0xf200f2f2,
177 0x72007272, 0xc200c2c2, 0xab00abab, 0x9a009a9a,
178 0x75007575, 0x06000606, 0x57005757, 0xa000a0a0,
179 0x91009191, 0xf700f7f7, 0xb500b5b5, 0xc900c9c9,
180 0xa200a2a2, 0x8c008c8c, 0xd200d2d2, 0x90009090,
181 0xf600f6f6, 0x07000707, 0xa700a7a7, 0x27002727,
182 0x8e008e8e, 0xb200b2b2, 0x49004949, 0xde00dede,
183 0x43004343, 0x5c005c5c, 0xd700d7d7, 0xc700c7c7,
184 0x3e003e3e, 0xf500f5f5, 0x8f008f8f, 0x67006767,
185 0x1f001f1f, 0x18001818, 0x6e006e6e, 0xaf00afaf,
186 0x2f002f2f, 0xe200e2e2, 0x85008585, 0x0d000d0d,
187 0x53005353, 0xf000f0f0, 0x9c009c9c, 0x65006565,
188 0xea00eaea, 0xa300a3a3, 0xae00aeae, 0x9e009e9e,
189 0xec00ecec, 0x80008080, 0x2d002d2d, 0x6b006b6b,
190 0xa800a8a8, 0x2b002b2b, 0x36003636, 0xa600a6a6,
191 0xc500c5c5, 0x86008686, 0x4d004d4d, 0x33003333,
192 0xfd00fdfd, 0x66006666, 0x58005858, 0x96009696,
193 0x3a003a3a, 0x09000909, 0x95009595, 0x10001010,
194 0x78007878, 0xd800d8d8, 0x42004242, 0xcc00cccc,
195 0xef00efef, 0x26002626, 0xe500e5e5, 0x61006161,
196 0x1a001a1a, 0x3f003f3f, 0x3b003b3b, 0x82008282,
197 0xb600b6b6, 0xdb00dbdb, 0xd400d4d4, 0x98009898,
198 0xe800e8e8, 0x8b008b8b, 0x02000202, 0xeb00ebeb,
199 0x0a000a0a, 0x2c002c2c, 0x1d001d1d, 0xb000b0b0,
200 0x6f006f6f, 0x8d008d8d, 0x88008888, 0x0e000e0e,
201 0x19001919, 0x87008787, 0x4e004e4e, 0x0b000b0b,
202 0xa900a9a9, 0x0c000c0c, 0x79007979, 0x11001111,
203 0x7f007f7f, 0x22002222, 0xe700e7e7, 0x59005959,
204 0xe100e1e1, 0xda00dada, 0x3d003d3d, 0xc800c8c8,
205 0x12001212, 0x04000404, 0x74007474, 0x54005454,
206 0x30003030, 0x7e007e7e, 0xb400b4b4, 0x28002828,
207 0x55005555, 0x68006868, 0x50005050, 0xbe00bebe,
208 0xd000d0d0, 0xc400c4c4, 0x31003131, 0xcb00cbcb,
209 0x2a002a2a, 0xad00adad, 0x0f000f0f, 0xca00caca,
210 0x70007070, 0xff00ffff, 0x32003232, 0x69006969,
211 0x08000808, 0x62006262, 0x00000000, 0x24002424,
212 0xd100d1d1, 0xfb00fbfb, 0xba00baba, 0xed00eded,
213 0x45004545, 0x81008181, 0x73007373, 0x6d006d6d,
214 0x84008484, 0x9f009f9f, 0xee00eeee, 0x4a004a4a,
215 0xc300c3c3, 0x2e002e2e, 0xc100c1c1, 0x01000101,
216 0xe600e6e6, 0x25002525, 0x48004848, 0x99009999,
217 0xb900b9b9, 0xb300b3b3, 0x7b007b7b, 0xf900f9f9,
218 0xce00cece, 0xbf00bfbf, 0xdf00dfdf, 0x71007171,
219 0x29002929, 0xcd00cdcd, 0x6c006c6c, 0x13001313,
220 0x64006464, 0x9b009b9b, 0x63006363, 0x9d009d9d,
221 0xc000c0c0, 0x4b004b4b, 0xb700b7b7, 0xa500a5a5,
222 0x89008989, 0x5f005f5f, 0xb100b1b1, 0x17001717,
223 0xf400f4f4, 0xbc00bcbc, 0xd300d3d3, 0x46004646,
224 0xcf00cfcf, 0x37003737, 0x5e005e5e, 0x47004747,
225 0x94009494, 0xfa00fafa, 0xfc00fcfc, 0x5b005b5b,
226 0x97009797, 0xfe00fefe, 0x5a005a5a, 0xac00acac,
227 0x3c003c3c, 0x4c004c4c, 0x03000303, 0x35003535,
228 0xf300f3f3, 0x23002323, 0xb800b8b8, 0x5d005d5d,
229 0x6a006a6a, 0x92009292, 0xd500d5d5, 0x21002121,
230 0x44004444, 0x51005151, 0xc600c6c6, 0x7d007d7d,
231 0x39003939, 0x83008383, 0xdc00dcdc, 0xaa00aaaa,
232 0x7c007c7c, 0x77007777, 0x56005656, 0x05000505,
233 0x1b001b1b, 0xa400a4a4, 0x15001515, 0x34003434,
234 0x1e001e1e, 0x1c001c1c, 0xf800f8f8, 0x52005252,
235 0x20002020, 0x14001414, 0xe900e9e9, 0xbd00bdbd,
236 0xdd00dddd, 0xe400e4e4, 0xa100a1a1, 0xe000e0e0,
237 0x8a008a8a, 0xf100f1f1, 0xd600d6d6, 0x7a007a7a,
238 0xbb00bbbb, 0xe300e3e3, 0x40004040, 0x4f004f4f,
239};
240
241static const u32 camellia_sp4404[256] = {
242 0x70700070, 0x2c2c002c, 0xb3b300b3, 0xc0c000c0,
243 0xe4e400e4, 0x57570057, 0xeaea00ea, 0xaeae00ae,
244 0x23230023, 0x6b6b006b, 0x45450045, 0xa5a500a5,
245 0xeded00ed, 0x4f4f004f, 0x1d1d001d, 0x92920092,
246 0x86860086, 0xafaf00af, 0x7c7c007c, 0x1f1f001f,
247 0x3e3e003e, 0xdcdc00dc, 0x5e5e005e, 0x0b0b000b,
248 0xa6a600a6, 0x39390039, 0xd5d500d5, 0x5d5d005d,
249 0xd9d900d9, 0x5a5a005a, 0x51510051, 0x6c6c006c,
250 0x8b8b008b, 0x9a9a009a, 0xfbfb00fb, 0xb0b000b0,
251 0x74740074, 0x2b2b002b, 0xf0f000f0, 0x84840084,
252 0xdfdf00df, 0xcbcb00cb, 0x34340034, 0x76760076,
253 0x6d6d006d, 0xa9a900a9, 0xd1d100d1, 0x04040004,
254 0x14140014, 0x3a3a003a, 0xdede00de, 0x11110011,
255 0x32320032, 0x9c9c009c, 0x53530053, 0xf2f200f2,
256 0xfefe00fe, 0xcfcf00cf, 0xc3c300c3, 0x7a7a007a,
257 0x24240024, 0xe8e800e8, 0x60600060, 0x69690069,
258 0xaaaa00aa, 0xa0a000a0, 0xa1a100a1, 0x62620062,
259 0x54540054, 0x1e1e001e, 0xe0e000e0, 0x64640064,
260 0x10100010, 0x00000000, 0xa3a300a3, 0x75750075,
261 0x8a8a008a, 0xe6e600e6, 0x09090009, 0xdddd00dd,
262 0x87870087, 0x83830083, 0xcdcd00cd, 0x90900090,
263 0x73730073, 0xf6f600f6, 0x9d9d009d, 0xbfbf00bf,
264 0x52520052, 0xd8d800d8, 0xc8c800c8, 0xc6c600c6,
265 0x81810081, 0x6f6f006f, 0x13130013, 0x63630063,
266 0xe9e900e9, 0xa7a700a7, 0x9f9f009f, 0xbcbc00bc,
267 0x29290029, 0xf9f900f9, 0x2f2f002f, 0xb4b400b4,
268 0x78780078, 0x06060006, 0xe7e700e7, 0x71710071,
269 0xd4d400d4, 0xabab00ab, 0x88880088, 0x8d8d008d,
270 0x72720072, 0xb9b900b9, 0xf8f800f8, 0xacac00ac,
271 0x36360036, 0x2a2a002a, 0x3c3c003c, 0xf1f100f1,
272 0x40400040, 0xd3d300d3, 0xbbbb00bb, 0x43430043,
273 0x15150015, 0xadad00ad, 0x77770077, 0x80800080,
274 0x82820082, 0xecec00ec, 0x27270027, 0xe5e500e5,
275 0x85850085, 0x35350035, 0x0c0c000c, 0x41410041,
276 0xefef00ef, 0x93930093, 0x19190019, 0x21210021,
277 0x0e0e000e, 0x4e4e004e, 0x65650065, 0xbdbd00bd,
278 0xb8b800b8, 0x8f8f008f, 0xebeb00eb, 0xcece00ce,
279 0x30300030, 0x5f5f005f, 0xc5c500c5, 0x1a1a001a,
280 0xe1e100e1, 0xcaca00ca, 0x47470047, 0x3d3d003d,
281 0x01010001, 0xd6d600d6, 0x56560056, 0x4d4d004d,
282 0x0d0d000d, 0x66660066, 0xcccc00cc, 0x2d2d002d,
283 0x12120012, 0x20200020, 0xb1b100b1, 0x99990099,
284 0x4c4c004c, 0xc2c200c2, 0x7e7e007e, 0x05050005,
285 0xb7b700b7, 0x31310031, 0x17170017, 0xd7d700d7,
286 0x58580058, 0x61610061, 0x1b1b001b, 0x1c1c001c,
287 0x0f0f000f, 0x16160016, 0x18180018, 0x22220022,
288 0x44440044, 0xb2b200b2, 0xb5b500b5, 0x91910091,
289 0x08080008, 0xa8a800a8, 0xfcfc00fc, 0x50500050,
290 0xd0d000d0, 0x7d7d007d, 0x89890089, 0x97970097,
291 0x5b5b005b, 0x95950095, 0xffff00ff, 0xd2d200d2,
292 0xc4c400c4, 0x48480048, 0xf7f700f7, 0xdbdb00db,
293 0x03030003, 0xdada00da, 0x3f3f003f, 0x94940094,
294 0x5c5c005c, 0x02020002, 0x4a4a004a, 0x33330033,
295 0x67670067, 0xf3f300f3, 0x7f7f007f, 0xe2e200e2,
296 0x9b9b009b, 0x26260026, 0x37370037, 0x3b3b003b,
297 0x96960096, 0x4b4b004b, 0xbebe00be, 0x2e2e002e,
298 0x79790079, 0x8c8c008c, 0x6e6e006e, 0x8e8e008e,
299 0xf5f500f5, 0xb6b600b6, 0xfdfd00fd, 0x59590059,
300 0x98980098, 0x6a6a006a, 0x46460046, 0xbaba00ba,
301 0x25250025, 0x42420042, 0xa2a200a2, 0xfafa00fa,
302 0x07070007, 0x55550055, 0xeeee00ee, 0x0a0a000a,
303 0x49490049, 0x68680068, 0x38380038, 0xa4a400a4,
304 0x28280028, 0x7b7b007b, 0xc9c900c9, 0xc1c100c1,
305 0xe3e300e3, 0xf4f400f4, 0xc7c700c7, 0x9e9e009e,
306};
307
308
309#define CAMELLIA_MIN_KEY_SIZE 16
310#define CAMELLIA_MAX_KEY_SIZE 32
311#define CAMELLIA_BLOCK_SIZE 16
312#define CAMELLIA_TABLE_BYTE_LEN 272
313
314/*
315 * NB: L and R below stand for 'left' and 'right' as in written numbers.
316 * That is, in (xxxL,xxxR) pair xxxL holds most significant digits,
317 * _not_ least significant ones!
318 */
319
320
321/* key constants */
322
323#define CAMELLIA_SIGMA1L (0xA09E667FL)
324#define CAMELLIA_SIGMA1R (0x3BCC908BL)
325#define CAMELLIA_SIGMA2L (0xB67AE858L)
326#define CAMELLIA_SIGMA2R (0x4CAA73B2L)
327#define CAMELLIA_SIGMA3L (0xC6EF372FL)
328#define CAMELLIA_SIGMA3R (0xE94F82BEL)
329#define CAMELLIA_SIGMA4L (0x54FF53A5L)
330#define CAMELLIA_SIGMA4R (0xF1D36F1CL)
331#define CAMELLIA_SIGMA5L (0x10E527FAL)
332#define CAMELLIA_SIGMA5R (0xDE682D1DL)
333#define CAMELLIA_SIGMA6L (0xB05688C2L)
334#define CAMELLIA_SIGMA6R (0xB3E6C1FDL)
335
336/*
337 * macros
338 */
339#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({ \
340 w0 = ll; \
341 ll = (ll << bits) + (lr >> (32 - bits)); \
342 lr = (lr << bits) + (rl >> (32 - bits)); \
343 rl = (rl << bits) + (rr >> (32 - bits)); \
344 rr = (rr << bits) + (w0 >> (32 - bits)); \
345})
346
347#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({ \
348 w0 = ll; \
349 w1 = lr; \
350 ll = (lr << (bits - 32)) + (rl >> (64 - bits)); \
351 lr = (rl << (bits - 32)) + (rr >> (64 - bits)); \
352 rl = (rr << (bits - 32)) + (w0 >> (64 - bits)); \
353 rr = (w0 << (bits - 32)) + (w1 >> (64 - bits)); \
354})
355
356#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({ \
357 il = xl ^ kl; \
358 ir = xr ^ kr; \
359 t0 = il >> 16; \
360 t1 = ir >> 16; \
361 yl = camellia_sp1110[(u8)(ir)] \
362 ^ camellia_sp0222[(u8)(t1 >> 8)] \
363 ^ camellia_sp3033[(u8)(t1)] \
364 ^ camellia_sp4404[(u8)(ir >> 8)]; \
365 yr = camellia_sp1110[(u8)(t0 >> 8)] \
366 ^ camellia_sp0222[(u8)(t0)] \
367 ^ camellia_sp3033[(u8)(il >> 8)] \
368 ^ camellia_sp4404[(u8)(il)]; \
369 yl ^= yr; \
370 yr = ror32(yr, 8); \
371 yr ^= yl; \
372})
373
374#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
375#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
376
377static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
378{
379 u32 dw, tl, tr;
380 u32 kw4l, kw4r;
381
382 /* absorb kw2 to other subkeys */
383 /* round 2 */
384 subL[3] ^= subL[1]; subR[3] ^= subR[1];
385 /* round 4 */
386 subL[5] ^= subL[1]; subR[5] ^= subR[1];
387 /* round 6 */
388 subL[7] ^= subL[1]; subR[7] ^= subR[1];
389 subL[1] ^= subR[1] & ~subR[9];
390 dw = subL[1] & subL[9];
391 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */
392 /* round 8 */
393 subL[11] ^= subL[1]; subR[11] ^= subR[1];
394 /* round 10 */
395 subL[13] ^= subL[1]; subR[13] ^= subR[1];
396 /* round 12 */
397 subL[15] ^= subL[1]; subR[15] ^= subR[1];
398 subL[1] ^= subR[1] & ~subR[17];
399 dw = subL[1] & subL[17];
400 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */
401 /* round 14 */
402 subL[19] ^= subL[1]; subR[19] ^= subR[1];
403 /* round 16 */
404 subL[21] ^= subL[1]; subR[21] ^= subR[1];
405 /* round 18 */
406 subL[23] ^= subL[1]; subR[23] ^= subR[1];
407 if (max == 24) {
408 /* kw3 */
409 subL[24] ^= subL[1]; subR[24] ^= subR[1];
410
411 /* absorb kw4 to other subkeys */
412 kw4l = subL[25]; kw4r = subR[25];
413 } else {
414 subL[1] ^= subR[1] & ~subR[25];
415 dw = subL[1] & subL[25];
416 subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */
417 /* round 20 */
418 subL[27] ^= subL[1]; subR[27] ^= subR[1];
419 /* round 22 */
420 subL[29] ^= subL[1]; subR[29] ^= subR[1];
421 /* round 24 */
422 subL[31] ^= subL[1]; subR[31] ^= subR[1];
423 /* kw3 */
424 subL[32] ^= subL[1]; subR[32] ^= subR[1];
425
426 /* absorb kw4 to other subkeys */
427 kw4l = subL[33]; kw4r = subR[33];
428 /* round 23 */
429 subL[30] ^= kw4l; subR[30] ^= kw4r;
430 /* round 21 */
431 subL[28] ^= kw4l; subR[28] ^= kw4r;
432 /* round 19 */
433 subL[26] ^= kw4l; subR[26] ^= kw4r;
434 kw4l ^= kw4r & ~subR[24];
435 dw = kw4l & subL[24];
436 kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */
437 }
438 /* round 17 */
439 subL[22] ^= kw4l; subR[22] ^= kw4r;
440 /* round 15 */
441 subL[20] ^= kw4l; subR[20] ^= kw4r;
442 /* round 13 */
443 subL[18] ^= kw4l; subR[18] ^= kw4r;
444 kw4l ^= kw4r & ~subR[16];
445 dw = kw4l & subL[16];
446 kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */
447 /* round 11 */
448 subL[14] ^= kw4l; subR[14] ^= kw4r;
449 /* round 9 */
450 subL[12] ^= kw4l; subR[12] ^= kw4r;
451 /* round 7 */
452 subL[10] ^= kw4l; subR[10] ^= kw4r;
453 kw4l ^= kw4r & ~subR[8];
454 dw = kw4l & subL[8];
455 kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */
456 /* round 5 */
457 subL[6] ^= kw4l; subR[6] ^= kw4r;
458 /* round 3 */
459 subL[4] ^= kw4l; subR[4] ^= kw4r;
460 /* round 1 */
461 subL[2] ^= kw4l; subR[2] ^= kw4r;
462 /* kw1 */
463 subL[0] ^= kw4l; subR[0] ^= kw4r;
464
465 /* key XOR is end of F-function */
466 SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */
467 SUBKEY_R(0) = subR[0] ^ subR[2];
468 SUBKEY_L(2) = subL[3]; /* round 1 */
469 SUBKEY_R(2) = subR[3];
470 SUBKEY_L(3) = subL[2] ^ subL[4]; /* round 2 */
471 SUBKEY_R(3) = subR[2] ^ subR[4];
472 SUBKEY_L(4) = subL[3] ^ subL[5]; /* round 3 */
473 SUBKEY_R(4) = subR[3] ^ subR[5];
474 SUBKEY_L(5) = subL[4] ^ subL[6]; /* round 4 */
475 SUBKEY_R(5) = subR[4] ^ subR[6];
476 SUBKEY_L(6) = subL[5] ^ subL[7]; /* round 5 */
477 SUBKEY_R(6) = subR[5] ^ subR[7];
478 tl = subL[10] ^ (subR[10] & ~subR[8]);
479 dw = tl & subL[8]; /* FL(kl1) */
480 tr = subR[10] ^ rol32(dw, 1);
481 SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
482 SUBKEY_R(7) = subR[6] ^ tr;
483 SUBKEY_L(8) = subL[8]; /* FL(kl1) */
484 SUBKEY_R(8) = subR[8];
485 SUBKEY_L(9) = subL[9]; /* FLinv(kl2) */
486 SUBKEY_R(9) = subR[9];
487 tl = subL[7] ^ (subR[7] & ~subR[9]);
488 dw = tl & subL[9]; /* FLinv(kl2) */
489 tr = subR[7] ^ rol32(dw, 1);
490 SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
491 SUBKEY_R(10) = tr ^ subR[11];
492 SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
493 SUBKEY_R(11) = subR[10] ^ subR[12];
494 SUBKEY_L(12) = subL[11] ^ subL[13]; /* round 9 */
495 SUBKEY_R(12) = subR[11] ^ subR[13];
496 SUBKEY_L(13) = subL[12] ^ subL[14]; /* round 10 */
497 SUBKEY_R(13) = subR[12] ^ subR[14];
498 SUBKEY_L(14) = subL[13] ^ subL[15]; /* round 11 */
499 SUBKEY_R(14) = subR[13] ^ subR[15];
500 tl = subL[18] ^ (subR[18] & ~subR[16]);
501 dw = tl & subL[16]; /* FL(kl3) */
502 tr = subR[18] ^ rol32(dw, 1);
503 SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
504 SUBKEY_R(15) = subR[14] ^ tr;
505 SUBKEY_L(16) = subL[16]; /* FL(kl3) */
506 SUBKEY_R(16) = subR[16];
507 SUBKEY_L(17) = subL[17]; /* FLinv(kl4) */
508 SUBKEY_R(17) = subR[17];
509 tl = subL[15] ^ (subR[15] & ~subR[17]);
510 dw = tl & subL[17]; /* FLinv(kl4) */
511 tr = subR[15] ^ rol32(dw, 1);
512 SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
513 SUBKEY_R(18) = tr ^ subR[19];
514 SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
515 SUBKEY_R(19) = subR[18] ^ subR[20];
516 SUBKEY_L(20) = subL[19] ^ subL[21]; /* round 15 */
517 SUBKEY_R(20) = subR[19] ^ subR[21];
518 SUBKEY_L(21) = subL[20] ^ subL[22]; /* round 16 */
519 SUBKEY_R(21) = subR[20] ^ subR[22];
520 SUBKEY_L(22) = subL[21] ^ subL[23]; /* round 17 */
521 SUBKEY_R(22) = subR[21] ^ subR[23];
522 if (max == 24) {
523 SUBKEY_L(23) = subL[22]; /* round 18 */
524 SUBKEY_R(23) = subR[22];
525 SUBKEY_L(24) = subL[24] ^ subL[23]; /* kw3 */
526 SUBKEY_R(24) = subR[24] ^ subR[23];
527 } else {
528 tl = subL[26] ^ (subR[26] & ~subR[24]);
529 dw = tl & subL[24]; /* FL(kl5) */
530 tr = subR[26] ^ rol32(dw, 1);
531 SUBKEY_L(23) = subL[22] ^ tl; /* round 18 */
532 SUBKEY_R(23) = subR[22] ^ tr;
533 SUBKEY_L(24) = subL[24]; /* FL(kl5) */
534 SUBKEY_R(24) = subR[24];
535 SUBKEY_L(25) = subL[25]; /* FLinv(kl6) */
536 SUBKEY_R(25) = subR[25];
537 tl = subL[23] ^ (subR[23] & ~subR[25]);
538 dw = tl & subL[25]; /* FLinv(kl6) */
539 tr = subR[23] ^ rol32(dw, 1);
540 SUBKEY_L(26) = tl ^ subL[27]; /* round 19 */
541 SUBKEY_R(26) = tr ^ subR[27];
542 SUBKEY_L(27) = subL[26] ^ subL[28]; /* round 20 */
543 SUBKEY_R(27) = subR[26] ^ subR[28];
544 SUBKEY_L(28) = subL[27] ^ subL[29]; /* round 21 */
545 SUBKEY_R(28) = subR[27] ^ subR[29];
546 SUBKEY_L(29) = subL[28] ^ subL[30]; /* round 22 */
547 SUBKEY_R(29) = subR[28] ^ subR[30];
548 SUBKEY_L(30) = subL[29] ^ subL[31]; /* round 23 */
549 SUBKEY_R(30) = subR[29] ^ subR[31];
550 SUBKEY_L(31) = subL[30]; /* round 24 */
551 SUBKEY_R(31) = subR[30];
552 SUBKEY_L(32) = subL[32] ^ subL[31]; /* kw3 */
553 SUBKEY_R(32) = subR[32] ^ subR[31];
554 }
555}
556
557static void camellia_setup128(const unsigned char *key, u32 *subkey)
558{
559 u32 kll, klr, krl, krr;
560 u32 il, ir, t0, t1, w0, w1;
561 u32 subL[26];
562 u32 subR[26];
563
564 /**
565 * k == kll || klr || krl || krr (|| is concatenation)
566 */
567 kll = get_unaligned_be32(key);
568 klr = get_unaligned_be32(key + 4);
569 krl = get_unaligned_be32(key + 8);
570 krr = get_unaligned_be32(key + 12);
571
572 /* generate KL dependent subkeys */
573 /* kw1 */
574 subL[0] = kll; subR[0] = klr;
575 /* kw2 */
576 subL[1] = krl; subR[1] = krr;
577 /* rotation left shift 15bit */
578 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
579 /* k3 */
580 subL[4] = kll; subR[4] = klr;
581 /* k4 */
582 subL[5] = krl; subR[5] = krr;
583 /* rotation left shift 15+30bit */
584 ROLDQ(kll, klr, krl, krr, w0, w1, 30);
585 /* k7 */
586 subL[10] = kll; subR[10] = klr;
587 /* k8 */
588 subL[11] = krl; subR[11] = krr;
589 /* rotation left shift 15+30+15bit */
590 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
591 /* k10 */
592 subL[13] = krl; subR[13] = krr;
593 /* rotation left shift 15+30+15+17 bit */
594 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
595 /* kl3 */
596 subL[16] = kll; subR[16] = klr;
597 /* kl4 */
598 subL[17] = krl; subR[17] = krr;
599 /* rotation left shift 15+30+15+17+17 bit */
600 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
601 /* k13 */
602 subL[18] = kll; subR[18] = klr;
603 /* k14 */
604 subL[19] = krl; subR[19] = krr;
605 /* rotation left shift 15+30+15+17+17+17 bit */
606 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
607 /* k17 */
608 subL[22] = kll; subR[22] = klr;
609 /* k18 */
610 subL[23] = krl; subR[23] = krr;
611
612 /* generate KA */
613 kll = subL[0]; klr = subR[0];
614 krl = subL[1]; krr = subR[1];
615 CAMELLIA_F(kll, klr,
616 CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
617 w0, w1, il, ir, t0, t1);
618 krl ^= w0; krr ^= w1;
619 CAMELLIA_F(krl, krr,
620 CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
621 kll, klr, il, ir, t0, t1);
622 /* current status == (kll, klr, w0, w1) */
623 CAMELLIA_F(kll, klr,
624 CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
625 krl, krr, il, ir, t0, t1);
626 krl ^= w0; krr ^= w1;
627 CAMELLIA_F(krl, krr,
628 CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
629 w0, w1, il, ir, t0, t1);
630 kll ^= w0; klr ^= w1;
631
632 /* generate KA dependent subkeys */
633 /* k1, k2 */
634 subL[2] = kll; subR[2] = klr;
635 subL[3] = krl; subR[3] = krr;
636 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
637 /* k5,k6 */
638 subL[6] = kll; subR[6] = klr;
639 subL[7] = krl; subR[7] = krr;
640 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
641 /* kl1, kl2 */
642 subL[8] = kll; subR[8] = klr;
643 subL[9] = krl; subR[9] = krr;
644 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
645 /* k9 */
646 subL[12] = kll; subR[12] = klr;
647 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
648 /* k11, k12 */
649 subL[14] = kll; subR[14] = klr;
650 subL[15] = krl; subR[15] = krr;
651 ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
652 /* k15, k16 */
653 subL[20] = kll; subR[20] = klr;
654 subL[21] = krl; subR[21] = krr;
655 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
656 /* kw3, kw4 */
657 subL[24] = kll; subR[24] = klr;
658 subL[25] = krl; subR[25] = krr;
659
660 camellia_setup_tail(subkey, subL, subR, 24);
661}
662
663static void camellia_setup256(const unsigned char *key, u32 *subkey)
664{
665 u32 kll, klr, krl, krr; /* left half of key */
666 u32 krll, krlr, krrl, krrr; /* right half of key */
667 u32 il, ir, t0, t1, w0, w1; /* temporary variables */
668 u32 subL[34];
669 u32 subR[34];
670
671 /**
672 * key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
673 * (|| is concatenation)
674 */
675 kll = get_unaligned_be32(key);
676 klr = get_unaligned_be32(key + 4);
677 krl = get_unaligned_be32(key + 8);
678 krr = get_unaligned_be32(key + 12);
679 krll = get_unaligned_be32(key + 16);
680 krlr = get_unaligned_be32(key + 20);
681 krrl = get_unaligned_be32(key + 24);
682 krrr = get_unaligned_be32(key + 28);
683
684 /* generate KL dependent subkeys */
685 /* kw1 */
686 subL[0] = kll; subR[0] = klr;
687 /* kw2 */
688 subL[1] = krl; subR[1] = krr;
689 ROLDQo32(kll, klr, krl, krr, w0, w1, 45);
690 /* k9 */
691 subL[12] = kll; subR[12] = klr;
692 /* k10 */
693 subL[13] = krl; subR[13] = krr;
694 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
695 /* kl3 */
696 subL[16] = kll; subR[16] = klr;
697 /* kl4 */
698 subL[17] = krl; subR[17] = krr;
699 ROLDQ(kll, klr, krl, krr, w0, w1, 17);
700 /* k17 */
701 subL[22] = kll; subR[22] = klr;
702 /* k18 */
703 subL[23] = krl; subR[23] = krr;
704 ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
705 /* k23 */
706 subL[30] = kll; subR[30] = klr;
707 /* k24 */
708 subL[31] = krl; subR[31] = krr;
709
710 /* generate KR dependent subkeys */
711 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
712 /* k3 */
713 subL[4] = krll; subR[4] = krlr;
714 /* k4 */
715 subL[5] = krrl; subR[5] = krrr;
716 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
717 /* kl1 */
718 subL[8] = krll; subR[8] = krlr;
719 /* kl2 */
720 subL[9] = krrl; subR[9] = krrr;
721 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
722 /* k13 */
723 subL[18] = krll; subR[18] = krlr;
724 /* k14 */
725 subL[19] = krrl; subR[19] = krrr;
726 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
727 /* k19 */
728 subL[26] = krll; subR[26] = krlr;
729 /* k20 */
730 subL[27] = krrl; subR[27] = krrr;
731 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
732
733 /* generate KA */
734 kll = subL[0] ^ krll; klr = subR[0] ^ krlr;
735 krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;
736 CAMELLIA_F(kll, klr,
737 CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
738 w0, w1, il, ir, t0, t1);
739 krl ^= w0; krr ^= w1;
740 CAMELLIA_F(krl, krr,
741 CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
742 kll, klr, il, ir, t0, t1);
743 kll ^= krll; klr ^= krlr;
744 CAMELLIA_F(kll, klr,
745 CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
746 krl, krr, il, ir, t0, t1);
747 krl ^= w0 ^ krrl; krr ^= w1 ^ krrr;
748 CAMELLIA_F(krl, krr,
749 CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
750 w0, w1, il, ir, t0, t1);
751 kll ^= w0; klr ^= w1;
752
753 /* generate KB */
754 krll ^= kll; krlr ^= klr;
755 krrl ^= krl; krrr ^= krr;
756 CAMELLIA_F(krll, krlr,
757 CAMELLIA_SIGMA5L, CAMELLIA_SIGMA5R,
758 w0, w1, il, ir, t0, t1);
759 krrl ^= w0; krrr ^= w1;
760 CAMELLIA_F(krrl, krrr,
761 CAMELLIA_SIGMA6L, CAMELLIA_SIGMA6R,
762 w0, w1, il, ir, t0, t1);
763 krll ^= w0; krlr ^= w1;
764
765 /* generate KA dependent subkeys */
766 ROLDQ(kll, klr, krl, krr, w0, w1, 15);
767 /* k5 */
768 subL[6] = kll; subR[6] = klr;
769 /* k6 */
770 subL[7] = krl; subR[7] = krr;
771 ROLDQ(kll, klr, krl, krr, w0, w1, 30);
772 /* k11 */
773 subL[14] = kll; subR[14] = klr;
774 /* k12 */
775 subL[15] = krl; subR[15] = krr;
776 /* rotation left shift 32bit */
777 /* kl5 */
778 subL[24] = klr; subR[24] = krl;
779 /* kl6 */
780 subL[25] = krr; subR[25] = kll;
781 /* rotation left shift 49 from k11,k12 -> k21,k22 */
782 ROLDQo32(kll, klr, krl, krr, w0, w1, 49);
783 /* k21 */
784 subL[28] = kll; subR[28] = klr;
785 /* k22 */
786 subL[29] = krl; subR[29] = krr;
787
788 /* generate KB dependent subkeys */
789 /* k1 */
790 subL[2] = krll; subR[2] = krlr;
791 /* k2 */
792 subL[3] = krrl; subR[3] = krrr;
793 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
794 /* k7 */
795 subL[10] = krll; subR[10] = krlr;
796 /* k8 */
797 subL[11] = krrl; subR[11] = krrr;
798 ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
799 /* k15 */
800 subL[20] = krll; subR[20] = krlr;
801 /* k16 */
802 subL[21] = krrl; subR[21] = krrr;
803 ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 51);
804 /* kw3 */
805 subL[32] = krll; subR[32] = krlr;
806 /* kw4 */
807 subL[33] = krrl; subR[33] = krrr;
808
809 camellia_setup_tail(subkey, subL, subR, 32);
810}
811
812static void camellia_setup192(const unsigned char *key, u32 *subkey)
813{
814 unsigned char kk[32];
815 u32 krll, krlr, krrl, krrr;
816
817 memcpy(kk, key, 24);
818 memcpy((unsigned char *)&krll, key+16, 4);
819 memcpy((unsigned char *)&krlr, key+20, 4);
820 krrl = ~krll;
821 krrr = ~krlr;
822 memcpy(kk+24, (unsigned char *)&krrl, 4);
823 memcpy(kk+28, (unsigned char *)&krrr, 4);
824 camellia_setup256(kk, subkey);
825}
826
827
828/*
829 * Encrypt/decrypt
830 */
831#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \
832 t0 = kll; \
833 t2 = krr; \
834 t0 &= ll; \
835 t2 |= rr; \
836 rl ^= t2; \
837 lr ^= rol32(t0, 1); \
838 t3 = krl; \
839 t1 = klr; \
840 t3 &= rl; \
841 t1 |= lr; \
842 ll ^= t1; \
843 rr ^= rol32(t3, 1); \
844})
845
846#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({ \
847 yl ^= kl; \
848 yr ^= kr; \
849 ir = camellia_sp1110[(u8)xr]; \
850 il = camellia_sp1110[(u8)(xl >> 24)]; \
851 ir ^= camellia_sp0222[(u8)(xr >> 24)]; \
852 il ^= camellia_sp0222[(u8)(xl >> 16)]; \
853 ir ^= camellia_sp3033[(u8)(xr >> 16)]; \
854 il ^= camellia_sp3033[(u8)(xl >> 8)]; \
855 ir ^= camellia_sp4404[(u8)(xr >> 8)]; \
856 il ^= camellia_sp4404[(u8)xl]; \
857 ir ^= il; \
858 yl ^= ir; \
859 yr ^= ror32(il, 8) ^ ir; \
860})
861
862/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
863static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
864{
865 u32 il, ir, t0, t1; /* temporary variables */
866
867 /* pre whitening but absorb kw2 */
868 io[0] ^= SUBKEY_L(0);
869 io[1] ^= SUBKEY_R(0);
870
871 /* main iteration */
872#define ROUNDS(i) ({ \
873 CAMELLIA_ROUNDSM(io[0], io[1], \
874 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
875 io[2], io[3], il, ir); \
876 CAMELLIA_ROUNDSM(io[2], io[3], \
877 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
878 io[0], io[1], il, ir); \
879 CAMELLIA_ROUNDSM(io[0], io[1], \
880 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
881 io[2], io[3], il, ir); \
882 CAMELLIA_ROUNDSM(io[2], io[3], \
883 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
884 io[0], io[1], il, ir); \
885 CAMELLIA_ROUNDSM(io[0], io[1], \
886 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
887 io[2], io[3], il, ir); \
888 CAMELLIA_ROUNDSM(io[2], io[3], \
889 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
890 io[0], io[1], il, ir); \
891})
892#define FLS(i) ({ \
893 CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
894 SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
895 SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
896 t0, t1, il, ir); \
897})
898
899 ROUNDS(0);
900 FLS(8);
901 ROUNDS(8);
902 FLS(16);
903 ROUNDS(16);
904 if (max == 32) {
905 FLS(24);
906 ROUNDS(24);
907 }
908
909#undef ROUNDS
910#undef FLS
911
912 /* post whitening but kw4 */
913 io[2] ^= SUBKEY_L(max);
914 io[3] ^= SUBKEY_R(max);
915 /* NB: io[0],[1] should be swapped with [2],[3] by caller! */
916}
917
918static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
919{
920 u32 il, ir, t0, t1; /* temporary variables */
921
922 /* pre whitening but absorb kw2 */
923 io[0] ^= SUBKEY_L(i);
924 io[1] ^= SUBKEY_R(i);
925
926 /* main iteration */
927#define ROUNDS(i) ({ \
928 CAMELLIA_ROUNDSM(io[0], io[1], \
929 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
930 io[2], io[3], il, ir); \
931 CAMELLIA_ROUNDSM(io[2], io[3], \
932 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
933 io[0], io[1], il, ir); \
934 CAMELLIA_ROUNDSM(io[0], io[1], \
935 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
936 io[2], io[3], il, ir); \
937 CAMELLIA_ROUNDSM(io[2], io[3], \
938 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
939 io[0], io[1], il, ir); \
940 CAMELLIA_ROUNDSM(io[0], io[1], \
941 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
942 io[2], io[3], il, ir); \
943 CAMELLIA_ROUNDSM(io[2], io[3], \
944 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
945 io[0], io[1], il, ir); \
946})
947#define FLS(i) ({ \
948 CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
949 SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
950 SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
951 t0, t1, il, ir); \
952})
953
954 if (i == 32) {
955 ROUNDS(24);
956 FLS(24);
957 }
958 ROUNDS(16);
959 FLS(16);
960 ROUNDS(8);
961 FLS(8);
962 ROUNDS(0);
963
964#undef ROUNDS
965#undef FLS
966
967 /* post whitening but kw4 */
968 io[2] ^= SUBKEY_L(0);
969 io[3] ^= SUBKEY_R(0);
970 /* NB: 0,1 should be swapped with 2,3 by caller! */
971}
972
973
974struct camellia_ctx {
975 int key_length;
976 u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];
977};
978
979static int
980camellia_set_key(struct crypto_tfm *tfm, const u8 *in_key,
981 unsigned int key_len)
982{
983 struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
984 const unsigned char *key = (const unsigned char *)in_key;
985 u32 *flags = &tfm->crt_flags;
986
987 if (key_len != 16 && key_len != 24 && key_len != 32) {
988 *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
989 return -EINVAL;
990 }
991
992 cctx->key_length = key_len;
993
994 switch (key_len) {
995 case 16:
996 camellia_setup128(key, cctx->key_table);
997 break;
998 case 24:
999 camellia_setup192(key, cctx->key_table);
1000 break;
1001 case 32:
1002 camellia_setup256(key, cctx->key_table);
1003 break;
1004 }
1005
1006 return 0;
1007}
1008
1009static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
1010{
1011 const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1012 const __be32 *src = (const __be32 *)in;
1013 __be32 *dst = (__be32 *)out;
1014 unsigned int max;
1015
1016 u32 tmp[4];
1017
1018 tmp[0] = be32_to_cpu(src[0]);
1019 tmp[1] = be32_to_cpu(src[1]);
1020 tmp[2] = be32_to_cpu(src[2]);
1021 tmp[3] = be32_to_cpu(src[3]);
1022
1023 if (cctx->key_length == 16)
1024 max = 24;
1025 else
1026 max = 32; /* for key lengths of 24 and 32 */
1027
1028 camellia_do_encrypt(cctx->key_table, tmp, max);
1029
1030 /* do_encrypt returns 0,1 swapped with 2,3 */
1031 dst[0] = cpu_to_be32(tmp[2]);
1032 dst[1] = cpu_to_be32(tmp[3]);
1033 dst[2] = cpu_to_be32(tmp[0]);
1034 dst[3] = cpu_to_be32(tmp[1]);
1035}
1036
1037static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
1038{
1039 const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1040 const __be32 *src = (const __be32 *)in;
1041 __be32 *dst = (__be32 *)out;
1042 unsigned int max;
1043
1044 u32 tmp[4];
1045
1046 tmp[0] = be32_to_cpu(src[0]);
1047 tmp[1] = be32_to_cpu(src[1]);
1048 tmp[2] = be32_to_cpu(src[2]);
1049 tmp[3] = be32_to_cpu(src[3]);
1050
1051 if (cctx->key_length == 16)
1052 max = 24;
1053 else
1054 max = 32; /* for key lengths of 24 and 32 */
1055
1056 camellia_do_decrypt(cctx->key_table, tmp, max);
1057
1058 /* do_decrypt returns 0,1 swapped with 2,3 */
1059 dst[0] = cpu_to_be32(tmp[2]);
1060 dst[1] = cpu_to_be32(tmp[3]);
1061 dst[2] = cpu_to_be32(tmp[0]);
1062 dst[3] = cpu_to_be32(tmp[1]);
1063}
1064
1065static struct crypto_alg camellia_alg = {
1066 .cra_name = "camellia",
1067 .cra_driver_name = "camellia-generic",
1068 .cra_priority = 100,
1069 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
1070 .cra_blocksize = CAMELLIA_BLOCK_SIZE,
1071 .cra_ctxsize = sizeof(struct camellia_ctx),
1072 .cra_alignmask = 3,
1073 .cra_module = THIS_MODULE,
1074 .cra_u = {
1075 .cipher = {
1076 .cia_min_keysize = CAMELLIA_MIN_KEY_SIZE,
1077 .cia_max_keysize = CAMELLIA_MAX_KEY_SIZE,
1078 .cia_setkey = camellia_set_key,
1079 .cia_encrypt = camellia_encrypt,
1080 .cia_decrypt = camellia_decrypt
1081 }
1082 }
1083};
1084
1085static int __init camellia_init(void)
1086{
1087 return crypto_register_alg(&camellia_alg);
1088}
1089
1090static void __exit camellia_fini(void)
1091{
1092 crypto_unregister_alg(&camellia_alg);
1093}
1094
1095module_init(camellia_init);
1096module_exit(camellia_fini);
1097
1098MODULE_DESCRIPTION("Camellia Cipher Algorithm");
1099MODULE_LICENSE("GPL");
1100MODULE_ALIAS_CRYPTO("camellia");
1101MODULE_ALIAS_CRYPTO("camellia-generic");