camellia_generic.c 34.9 KB
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/*
 * Copyright (C) 2006
 * NTT (Nippon Telegraph and Telephone Corporation).
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * 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/>.
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 */

/*
 * Algorithm Specification
 *  http://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html
 */

/*
 *
 * NOTE --- NOTE --- NOTE --- NOTE
 * This implementation assumes that all memory addresses passed
 * as parameters are four-byte aligned.
 *
 */

#include <linux/crypto.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
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#include <linux/bitops.h>
#include <asm/unaligned.h>
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static const u32 camellia_sp1110[256] = {
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104
	0x70707000, 0x82828200, 0x2c2c2c00, 0xececec00,
	0xb3b3b300, 0x27272700, 0xc0c0c000, 0xe5e5e500,
	0xe4e4e400, 0x85858500, 0x57575700, 0x35353500,
	0xeaeaea00, 0x0c0c0c00, 0xaeaeae00, 0x41414100,
	0x23232300, 0xefefef00, 0x6b6b6b00, 0x93939300,
	0x45454500, 0x19191900, 0xa5a5a500, 0x21212100,
	0xededed00, 0x0e0e0e00, 0x4f4f4f00, 0x4e4e4e00,
	0x1d1d1d00, 0x65656500, 0x92929200, 0xbdbdbd00,
	0x86868600, 0xb8b8b800, 0xafafaf00, 0x8f8f8f00,
	0x7c7c7c00, 0xebebeb00, 0x1f1f1f00, 0xcecece00,
	0x3e3e3e00, 0x30303000, 0xdcdcdc00, 0x5f5f5f00,
	0x5e5e5e00, 0xc5c5c500, 0x0b0b0b00, 0x1a1a1a00,
	0xa6a6a600, 0xe1e1e100, 0x39393900, 0xcacaca00,
	0xd5d5d500, 0x47474700, 0x5d5d5d00, 0x3d3d3d00,
	0xd9d9d900, 0x01010100, 0x5a5a5a00, 0xd6d6d600,
	0x51515100, 0x56565600, 0x6c6c6c00, 0x4d4d4d00,
	0x8b8b8b00, 0x0d0d0d00, 0x9a9a9a00, 0x66666600,
	0xfbfbfb00, 0xcccccc00, 0xb0b0b000, 0x2d2d2d00,
	0x74747400, 0x12121200, 0x2b2b2b00, 0x20202000,
	0xf0f0f000, 0xb1b1b100, 0x84848400, 0x99999900,
	0xdfdfdf00, 0x4c4c4c00, 0xcbcbcb00, 0xc2c2c200,
	0x34343400, 0x7e7e7e00, 0x76767600, 0x05050500,
	0x6d6d6d00, 0xb7b7b700, 0xa9a9a900, 0x31313100,
	0xd1d1d100, 0x17171700, 0x04040400, 0xd7d7d700,
	0x14141400, 0x58585800, 0x3a3a3a00, 0x61616100,
	0xdedede00, 0x1b1b1b00, 0x11111100, 0x1c1c1c00,
	0x32323200, 0x0f0f0f00, 0x9c9c9c00, 0x16161600,
	0x53535300, 0x18181800, 0xf2f2f200, 0x22222200,
	0xfefefe00, 0x44444400, 0xcfcfcf00, 0xb2b2b200,
	0xc3c3c300, 0xb5b5b500, 0x7a7a7a00, 0x91919100,
	0x24242400, 0x08080800, 0xe8e8e800, 0xa8a8a800,
	0x60606000, 0xfcfcfc00, 0x69696900, 0x50505000,
	0xaaaaaa00, 0xd0d0d000, 0xa0a0a000, 0x7d7d7d00,
	0xa1a1a100, 0x89898900, 0x62626200, 0x97979700,
	0x54545400, 0x5b5b5b00, 0x1e1e1e00, 0x95959500,
	0xe0e0e000, 0xffffff00, 0x64646400, 0xd2d2d200,
	0x10101000, 0xc4c4c400, 0x00000000, 0x48484800,
	0xa3a3a300, 0xf7f7f700, 0x75757500, 0xdbdbdb00,
	0x8a8a8a00, 0x03030300, 0xe6e6e600, 0xdadada00,
	0x09090900, 0x3f3f3f00, 0xdddddd00, 0x94949400,
	0x87878700, 0x5c5c5c00, 0x83838300, 0x02020200,
	0xcdcdcd00, 0x4a4a4a00, 0x90909000, 0x33333300,
	0x73737300, 0x67676700, 0xf6f6f600, 0xf3f3f300,
	0x9d9d9d00, 0x7f7f7f00, 0xbfbfbf00, 0xe2e2e200,
	0x52525200, 0x9b9b9b00, 0xd8d8d800, 0x26262600,
	0xc8c8c800, 0x37373700, 0xc6c6c600, 0x3b3b3b00,
	0x81818100, 0x96969600, 0x6f6f6f00, 0x4b4b4b00,
	0x13131300, 0xbebebe00, 0x63636300, 0x2e2e2e00,
	0xe9e9e900, 0x79797900, 0xa7a7a700, 0x8c8c8c00,
	0x9f9f9f00, 0x6e6e6e00, 0xbcbcbc00, 0x8e8e8e00,
	0x29292900, 0xf5f5f500, 0xf9f9f900, 0xb6b6b600,
	0x2f2f2f00, 0xfdfdfd00, 0xb4b4b400, 0x59595900,
	0x78787800, 0x98989800, 0x06060600, 0x6a6a6a00,
	0xe7e7e700, 0x46464600, 0x71717100, 0xbababa00,
	0xd4d4d400, 0x25252500, 0xababab00, 0x42424200,
	0x88888800, 0xa2a2a200, 0x8d8d8d00, 0xfafafa00,
	0x72727200, 0x07070700, 0xb9b9b900, 0x55555500,
	0xf8f8f800, 0xeeeeee00, 0xacacac00, 0x0a0a0a00,
	0x36363600, 0x49494900, 0x2a2a2a00, 0x68686800,
	0x3c3c3c00, 0x38383800, 0xf1f1f100, 0xa4a4a400,
	0x40404000, 0x28282800, 0xd3d3d300, 0x7b7b7b00,
	0xbbbbbb00, 0xc9c9c900, 0x43434300, 0xc1c1c100,
	0x15151500, 0xe3e3e300, 0xadadad00, 0xf4f4f400,
	0x77777700, 0xc7c7c700, 0x80808000, 0x9e9e9e00,
105 106 107
};

static const u32 camellia_sp0222[256] = {
108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171
	0x00e0e0e0, 0x00050505, 0x00585858, 0x00d9d9d9,
	0x00676767, 0x004e4e4e, 0x00818181, 0x00cbcbcb,
	0x00c9c9c9, 0x000b0b0b, 0x00aeaeae, 0x006a6a6a,
	0x00d5d5d5, 0x00181818, 0x005d5d5d, 0x00828282,
	0x00464646, 0x00dfdfdf, 0x00d6d6d6, 0x00272727,
	0x008a8a8a, 0x00323232, 0x004b4b4b, 0x00424242,
	0x00dbdbdb, 0x001c1c1c, 0x009e9e9e, 0x009c9c9c,
	0x003a3a3a, 0x00cacaca, 0x00252525, 0x007b7b7b,
	0x000d0d0d, 0x00717171, 0x005f5f5f, 0x001f1f1f,
	0x00f8f8f8, 0x00d7d7d7, 0x003e3e3e, 0x009d9d9d,
	0x007c7c7c, 0x00606060, 0x00b9b9b9, 0x00bebebe,
	0x00bcbcbc, 0x008b8b8b, 0x00161616, 0x00343434,
	0x004d4d4d, 0x00c3c3c3, 0x00727272, 0x00959595,
	0x00ababab, 0x008e8e8e, 0x00bababa, 0x007a7a7a,
	0x00b3b3b3, 0x00020202, 0x00b4b4b4, 0x00adadad,
	0x00a2a2a2, 0x00acacac, 0x00d8d8d8, 0x009a9a9a,
	0x00171717, 0x001a1a1a, 0x00353535, 0x00cccccc,
	0x00f7f7f7, 0x00999999, 0x00616161, 0x005a5a5a,
	0x00e8e8e8, 0x00242424, 0x00565656, 0x00404040,
	0x00e1e1e1, 0x00636363, 0x00090909, 0x00333333,
	0x00bfbfbf, 0x00989898, 0x00979797, 0x00858585,
	0x00686868, 0x00fcfcfc, 0x00ececec, 0x000a0a0a,
	0x00dadada, 0x006f6f6f, 0x00535353, 0x00626262,
	0x00a3a3a3, 0x002e2e2e, 0x00080808, 0x00afafaf,
	0x00282828, 0x00b0b0b0, 0x00747474, 0x00c2c2c2,
	0x00bdbdbd, 0x00363636, 0x00222222, 0x00383838,
	0x00646464, 0x001e1e1e, 0x00393939, 0x002c2c2c,
	0x00a6a6a6, 0x00303030, 0x00e5e5e5, 0x00444444,
	0x00fdfdfd, 0x00888888, 0x009f9f9f, 0x00656565,
	0x00878787, 0x006b6b6b, 0x00f4f4f4, 0x00232323,
	0x00484848, 0x00101010, 0x00d1d1d1, 0x00515151,
	0x00c0c0c0, 0x00f9f9f9, 0x00d2d2d2, 0x00a0a0a0,
	0x00555555, 0x00a1a1a1, 0x00414141, 0x00fafafa,
	0x00434343, 0x00131313, 0x00c4c4c4, 0x002f2f2f,
	0x00a8a8a8, 0x00b6b6b6, 0x003c3c3c, 0x002b2b2b,
	0x00c1c1c1, 0x00ffffff, 0x00c8c8c8, 0x00a5a5a5,
	0x00202020, 0x00898989, 0x00000000, 0x00909090,
	0x00474747, 0x00efefef, 0x00eaeaea, 0x00b7b7b7,
	0x00151515, 0x00060606, 0x00cdcdcd, 0x00b5b5b5,
	0x00121212, 0x007e7e7e, 0x00bbbbbb, 0x00292929,
	0x000f0f0f, 0x00b8b8b8, 0x00070707, 0x00040404,
	0x009b9b9b, 0x00949494, 0x00212121, 0x00666666,
	0x00e6e6e6, 0x00cecece, 0x00ededed, 0x00e7e7e7,
	0x003b3b3b, 0x00fefefe, 0x007f7f7f, 0x00c5c5c5,
	0x00a4a4a4, 0x00373737, 0x00b1b1b1, 0x004c4c4c,
	0x00919191, 0x006e6e6e, 0x008d8d8d, 0x00767676,
	0x00030303, 0x002d2d2d, 0x00dedede, 0x00969696,
	0x00262626, 0x007d7d7d, 0x00c6c6c6, 0x005c5c5c,
	0x00d3d3d3, 0x00f2f2f2, 0x004f4f4f, 0x00191919,
	0x003f3f3f, 0x00dcdcdc, 0x00797979, 0x001d1d1d,
	0x00525252, 0x00ebebeb, 0x00f3f3f3, 0x006d6d6d,
	0x005e5e5e, 0x00fbfbfb, 0x00696969, 0x00b2b2b2,
	0x00f0f0f0, 0x00313131, 0x000c0c0c, 0x00d4d4d4,
	0x00cfcfcf, 0x008c8c8c, 0x00e2e2e2, 0x00757575,
	0x00a9a9a9, 0x004a4a4a, 0x00575757, 0x00848484,
	0x00111111, 0x00454545, 0x001b1b1b, 0x00f5f5f5,
	0x00e4e4e4, 0x000e0e0e, 0x00737373, 0x00aaaaaa,
	0x00f1f1f1, 0x00dddddd, 0x00595959, 0x00141414,
	0x006c6c6c, 0x00929292, 0x00545454, 0x00d0d0d0,
	0x00787878, 0x00707070, 0x00e3e3e3, 0x00494949,
	0x00808080, 0x00505050, 0x00a7a7a7, 0x00f6f6f6,
	0x00777777, 0x00939393, 0x00868686, 0x00838383,
	0x002a2a2a, 0x00c7c7c7, 0x005b5b5b, 0x00e9e9e9,
	0x00eeeeee, 0x008f8f8f, 0x00010101, 0x003d3d3d,
172 173 174
};

static const u32 camellia_sp3033[256] = {
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	0x38003838, 0x41004141, 0x16001616, 0x76007676,
	0xd900d9d9, 0x93009393, 0x60006060, 0xf200f2f2,
	0x72007272, 0xc200c2c2, 0xab00abab, 0x9a009a9a,
	0x75007575, 0x06000606, 0x57005757, 0xa000a0a0,
	0x91009191, 0xf700f7f7, 0xb500b5b5, 0xc900c9c9,
	0xa200a2a2, 0x8c008c8c, 0xd200d2d2, 0x90009090,
	0xf600f6f6, 0x07000707, 0xa700a7a7, 0x27002727,
	0x8e008e8e, 0xb200b2b2, 0x49004949, 0xde00dede,
	0x43004343, 0x5c005c5c, 0xd700d7d7, 0xc700c7c7,
	0x3e003e3e, 0xf500f5f5, 0x8f008f8f, 0x67006767,
	0x1f001f1f, 0x18001818, 0x6e006e6e, 0xaf00afaf,
	0x2f002f2f, 0xe200e2e2, 0x85008585, 0x0d000d0d,
	0x53005353, 0xf000f0f0, 0x9c009c9c, 0x65006565,
	0xea00eaea, 0xa300a3a3, 0xae00aeae, 0x9e009e9e,
	0xec00ecec, 0x80008080, 0x2d002d2d, 0x6b006b6b,
	0xa800a8a8, 0x2b002b2b, 0x36003636, 0xa600a6a6,
	0xc500c5c5, 0x86008686, 0x4d004d4d, 0x33003333,
	0xfd00fdfd, 0x66006666, 0x58005858, 0x96009696,
	0x3a003a3a, 0x09000909, 0x95009595, 0x10001010,
	0x78007878, 0xd800d8d8, 0x42004242, 0xcc00cccc,
	0xef00efef, 0x26002626, 0xe500e5e5, 0x61006161,
	0x1a001a1a, 0x3f003f3f, 0x3b003b3b, 0x82008282,
	0xb600b6b6, 0xdb00dbdb, 0xd400d4d4, 0x98009898,
	0xe800e8e8, 0x8b008b8b, 0x02000202, 0xeb00ebeb,
	0x0a000a0a, 0x2c002c2c, 0x1d001d1d, 0xb000b0b0,
	0x6f006f6f, 0x8d008d8d, 0x88008888, 0x0e000e0e,
	0x19001919, 0x87008787, 0x4e004e4e, 0x0b000b0b,
	0xa900a9a9, 0x0c000c0c, 0x79007979, 0x11001111,
	0x7f007f7f, 0x22002222, 0xe700e7e7, 0x59005959,
	0xe100e1e1, 0xda00dada, 0x3d003d3d, 0xc800c8c8,
	0x12001212, 0x04000404, 0x74007474, 0x54005454,
	0x30003030, 0x7e007e7e, 0xb400b4b4, 0x28002828,
	0x55005555, 0x68006868, 0x50005050, 0xbe00bebe,
	0xd000d0d0, 0xc400c4c4, 0x31003131, 0xcb00cbcb,
	0x2a002a2a, 0xad00adad, 0x0f000f0f, 0xca00caca,
	0x70007070, 0xff00ffff, 0x32003232, 0x69006969,
	0x08000808, 0x62006262, 0x00000000, 0x24002424,
	0xd100d1d1, 0xfb00fbfb, 0xba00baba, 0xed00eded,
	0x45004545, 0x81008181, 0x73007373, 0x6d006d6d,
	0x84008484, 0x9f009f9f, 0xee00eeee, 0x4a004a4a,
	0xc300c3c3, 0x2e002e2e, 0xc100c1c1, 0x01000101,
	0xe600e6e6, 0x25002525, 0x48004848, 0x99009999,
	0xb900b9b9, 0xb300b3b3, 0x7b007b7b, 0xf900f9f9,
	0xce00cece, 0xbf00bfbf, 0xdf00dfdf, 0x71007171,
	0x29002929, 0xcd00cdcd, 0x6c006c6c, 0x13001313,
	0x64006464, 0x9b009b9b, 0x63006363, 0x9d009d9d,
	0xc000c0c0, 0x4b004b4b, 0xb700b7b7, 0xa500a5a5,
	0x89008989, 0x5f005f5f, 0xb100b1b1, 0x17001717,
	0xf400f4f4, 0xbc00bcbc, 0xd300d3d3, 0x46004646,
	0xcf00cfcf, 0x37003737, 0x5e005e5e, 0x47004747,
	0x94009494, 0xfa00fafa, 0xfc00fcfc, 0x5b005b5b,
	0x97009797, 0xfe00fefe, 0x5a005a5a, 0xac00acac,
	0x3c003c3c, 0x4c004c4c, 0x03000303, 0x35003535,
	0xf300f3f3, 0x23002323, 0xb800b8b8, 0x5d005d5d,
	0x6a006a6a, 0x92009292, 0xd500d5d5, 0x21002121,
	0x44004444, 0x51005151, 0xc600c6c6, 0x7d007d7d,
	0x39003939, 0x83008383, 0xdc00dcdc, 0xaa00aaaa,
	0x7c007c7c, 0x77007777, 0x56005656, 0x05000505,
	0x1b001b1b, 0xa400a4a4, 0x15001515, 0x34003434,
	0x1e001e1e, 0x1c001c1c, 0xf800f8f8, 0x52005252,
	0x20002020, 0x14001414, 0xe900e9e9, 0xbd00bdbd,
	0xdd00dddd, 0xe400e4e4, 0xa100a1a1, 0xe000e0e0,
	0x8a008a8a, 0xf100f1f1, 0xd600d6d6, 0x7a007a7a,
	0xbb00bbbb, 0xe300e3e3, 0x40004040, 0x4f004f4f,
239 240 241
};

static const u32 camellia_sp4404[256] = {
242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305
	0x70700070, 0x2c2c002c, 0xb3b300b3, 0xc0c000c0,
	0xe4e400e4, 0x57570057, 0xeaea00ea, 0xaeae00ae,
	0x23230023, 0x6b6b006b, 0x45450045, 0xa5a500a5,
	0xeded00ed, 0x4f4f004f, 0x1d1d001d, 0x92920092,
	0x86860086, 0xafaf00af, 0x7c7c007c, 0x1f1f001f,
	0x3e3e003e, 0xdcdc00dc, 0x5e5e005e, 0x0b0b000b,
	0xa6a600a6, 0x39390039, 0xd5d500d5, 0x5d5d005d,
	0xd9d900d9, 0x5a5a005a, 0x51510051, 0x6c6c006c,
	0x8b8b008b, 0x9a9a009a, 0xfbfb00fb, 0xb0b000b0,
	0x74740074, 0x2b2b002b, 0xf0f000f0, 0x84840084,
	0xdfdf00df, 0xcbcb00cb, 0x34340034, 0x76760076,
	0x6d6d006d, 0xa9a900a9, 0xd1d100d1, 0x04040004,
	0x14140014, 0x3a3a003a, 0xdede00de, 0x11110011,
	0x32320032, 0x9c9c009c, 0x53530053, 0xf2f200f2,
	0xfefe00fe, 0xcfcf00cf, 0xc3c300c3, 0x7a7a007a,
	0x24240024, 0xe8e800e8, 0x60600060, 0x69690069,
	0xaaaa00aa, 0xa0a000a0, 0xa1a100a1, 0x62620062,
	0x54540054, 0x1e1e001e, 0xe0e000e0, 0x64640064,
	0x10100010, 0x00000000, 0xa3a300a3, 0x75750075,
	0x8a8a008a, 0xe6e600e6, 0x09090009, 0xdddd00dd,
	0x87870087, 0x83830083, 0xcdcd00cd, 0x90900090,
	0x73730073, 0xf6f600f6, 0x9d9d009d, 0xbfbf00bf,
	0x52520052, 0xd8d800d8, 0xc8c800c8, 0xc6c600c6,
	0x81810081, 0x6f6f006f, 0x13130013, 0x63630063,
	0xe9e900e9, 0xa7a700a7, 0x9f9f009f, 0xbcbc00bc,
	0x29290029, 0xf9f900f9, 0x2f2f002f, 0xb4b400b4,
	0x78780078, 0x06060006, 0xe7e700e7, 0x71710071,
	0xd4d400d4, 0xabab00ab, 0x88880088, 0x8d8d008d,
	0x72720072, 0xb9b900b9, 0xf8f800f8, 0xacac00ac,
	0x36360036, 0x2a2a002a, 0x3c3c003c, 0xf1f100f1,
	0x40400040, 0xd3d300d3, 0xbbbb00bb, 0x43430043,
	0x15150015, 0xadad00ad, 0x77770077, 0x80800080,
	0x82820082, 0xecec00ec, 0x27270027, 0xe5e500e5,
	0x85850085, 0x35350035, 0x0c0c000c, 0x41410041,
	0xefef00ef, 0x93930093, 0x19190019, 0x21210021,
	0x0e0e000e, 0x4e4e004e, 0x65650065, 0xbdbd00bd,
	0xb8b800b8, 0x8f8f008f, 0xebeb00eb, 0xcece00ce,
	0x30300030, 0x5f5f005f, 0xc5c500c5, 0x1a1a001a,
	0xe1e100e1, 0xcaca00ca, 0x47470047, 0x3d3d003d,
	0x01010001, 0xd6d600d6, 0x56560056, 0x4d4d004d,
	0x0d0d000d, 0x66660066, 0xcccc00cc, 0x2d2d002d,
	0x12120012, 0x20200020, 0xb1b100b1, 0x99990099,
	0x4c4c004c, 0xc2c200c2, 0x7e7e007e, 0x05050005,
	0xb7b700b7, 0x31310031, 0x17170017, 0xd7d700d7,
	0x58580058, 0x61610061, 0x1b1b001b, 0x1c1c001c,
	0x0f0f000f, 0x16160016, 0x18180018, 0x22220022,
	0x44440044, 0xb2b200b2, 0xb5b500b5, 0x91910091,
	0x08080008, 0xa8a800a8, 0xfcfc00fc, 0x50500050,
	0xd0d000d0, 0x7d7d007d, 0x89890089, 0x97970097,
	0x5b5b005b, 0x95950095, 0xffff00ff, 0xd2d200d2,
	0xc4c400c4, 0x48480048, 0xf7f700f7, 0xdbdb00db,
	0x03030003, 0xdada00da, 0x3f3f003f, 0x94940094,
	0x5c5c005c, 0x02020002, 0x4a4a004a, 0x33330033,
	0x67670067, 0xf3f300f3, 0x7f7f007f, 0xe2e200e2,
	0x9b9b009b, 0x26260026, 0x37370037, 0x3b3b003b,
	0x96960096, 0x4b4b004b, 0xbebe00be, 0x2e2e002e,
	0x79790079, 0x8c8c008c, 0x6e6e006e, 0x8e8e008e,
	0xf5f500f5, 0xb6b600b6, 0xfdfd00fd, 0x59590059,
	0x98980098, 0x6a6a006a, 0x46460046, 0xbaba00ba,
	0x25250025, 0x42420042, 0xa2a200a2, 0xfafa00fa,
	0x07070007, 0x55550055, 0xeeee00ee, 0x0a0a000a,
	0x49490049, 0x68680068, 0x38380038, 0xa4a400a4,
	0x28280028, 0x7b7b007b, 0xc9c900c9, 0xc1c100c1,
	0xe3e300e3, 0xf4f400f4, 0xc7c700c7, 0x9e9e009e,
306 307 308
};


309 310 311 312 313
#define CAMELLIA_MIN_KEY_SIZE        16
#define CAMELLIA_MAX_KEY_SIZE        32
#define CAMELLIA_BLOCK_SIZE          16
#define CAMELLIA_TABLE_BYTE_LEN     272

314 315 316 317 318 319
/*
 * NB: L and R below stand for 'left' and 'right' as in written numbers.
 * That is, in (xxxL,xxxR) pair xxxL holds most significant digits,
 * _not_ least significant ones!
 */

320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338

/* key constants */

#define CAMELLIA_SIGMA1L (0xA09E667FL)
#define CAMELLIA_SIGMA1R (0x3BCC908BL)
#define CAMELLIA_SIGMA2L (0xB67AE858L)
#define CAMELLIA_SIGMA2R (0x4CAA73B2L)
#define CAMELLIA_SIGMA3L (0xC6EF372FL)
#define CAMELLIA_SIGMA3R (0xE94F82BEL)
#define CAMELLIA_SIGMA4L (0x54FF53A5L)
#define CAMELLIA_SIGMA4R (0xF1D36F1CL)
#define CAMELLIA_SIGMA5L (0x10E527FAL)
#define CAMELLIA_SIGMA5R (0xDE682D1DL)
#define CAMELLIA_SIGMA6L (0xB05688C2L)
#define CAMELLIA_SIGMA6R (0xB3E6C1FDL)

/*
 *  macros
 */
339
#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({		\
340 341 342 343 344
	w0 = ll;					\
	ll = (ll << bits) + (lr >> (32 - bits));	\
	lr = (lr << bits) + (rl >> (32 - bits));	\
	rl = (rl << bits) + (rr >> (32 - bits));	\
	rr = (rr << bits) + (w0 >> (32 - bits));	\
345
})
346

347
#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({	\
348 349 350 351 352 353
	w0 = ll;					\
	w1 = lr;					\
	ll = (lr << (bits - 32)) + (rl >> (64 - bits));	\
	lr = (rl << (bits - 32)) + (rr >> (64 - bits));	\
	rl = (rr << (bits - 32)) + (w0 >> (64 - bits));	\
	rr = (w0 << (bits - 32)) + (w1 >> (64 - bits));	\
354
})
355

356
#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({	\
357 358 359 360
	il = xl ^ kl;						\
	ir = xr ^ kr;						\
	t0 = il >> 16;						\
	t1 = ir >> 16;						\
361 362 363
	yl = camellia_sp1110[(u8)(ir)]				\
	   ^ camellia_sp0222[(u8)(t1 >> 8)]			\
	   ^ camellia_sp3033[(u8)(t1)]				\
364
	   ^ camellia_sp4404[(u8)(ir >> 8)];			\
365 366
	yr = camellia_sp1110[(u8)(t0 >> 8)]			\
	   ^ 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

374 375
#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
376

377
static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
378
{
379
	u32 dw, tl, tr;
380
	u32 kw4l, kw4r;
381

382 383 384 385 386 387 388 389
	/* absorb kw2 to other subkeys */
	/* round 2 */
	subL[3] ^= subL[1]; subR[3] ^= subR[1];
	/* round 4 */
	subL[5] ^= subL[1]; subR[5] ^= subR[1];
	/* round 6 */
	subL[7] ^= subL[1]; subR[7] ^= subR[1];
	subL[1] ^= subR[1] & ~subR[9];
390 391
	dw = subL[1] & subL[9];
	subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */
392 393 394 395 396 397 398
	/* round 8 */
	subL[11] ^= subL[1]; subR[11] ^= subR[1];
	/* round 10 */
	subL[13] ^= subL[1]; subR[13] ^= subR[1];
	/* round 12 */
	subL[15] ^= subL[1]; subR[15] ^= subR[1];
	subL[1] ^= subR[1] & ~subR[17];
399 400
	dw = subL[1] & subL[17];
	subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */
401 402 403 404 405 406 407 408 409 410 411 412 413 414
	/* round 14 */
	subL[19] ^= subL[1]; subR[19] ^= subR[1];
	/* round 16 */
	subL[21] ^= subL[1]; subR[21] ^= subR[1];
	/* round 18 */
	subL[23] ^= subL[1]; subR[23] ^= subR[1];
	if (max == 24) {
		/* kw3 */
		subL[24] ^= subL[1]; subR[24] ^= subR[1];

	/* absorb kw4 to other subkeys */
		kw4l = subL[25]; kw4r = subR[25];
	} else {
		subL[1] ^= subR[1] & ~subR[25];
415 416
		dw = subL[1] & subL[25];
		subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */
417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434
		/* round 20 */
		subL[27] ^= subL[1]; subR[27] ^= subR[1];
		/* round 22 */
		subL[29] ^= subL[1]; subR[29] ^= subR[1];
		/* round 24 */
		subL[31] ^= subL[1]; subR[31] ^= subR[1];
		/* kw3 */
		subL[32] ^= subL[1]; subR[32] ^= subR[1];

	/* absorb kw4 to other subkeys */
		kw4l = subL[33]; kw4r = subR[33];
		/* round 23 */
		subL[30] ^= kw4l; subR[30] ^= kw4r;
		/* round 21 */
		subL[28] ^= kw4l; subR[28] ^= kw4r;
		/* round 19 */
		subL[26] ^= kw4l; subR[26] ^= kw4r;
		kw4l ^= kw4r & ~subR[24];
435 436
		dw = kw4l & subL[24];
		kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */
437 438 439 440 441 442 443 444
	}
	/* round 17 */
	subL[22] ^= kw4l; subR[22] ^= kw4r;
	/* round 15 */
	subL[20] ^= kw4l; subR[20] ^= kw4r;
	/* round 13 */
	subL[18] ^= kw4l; subR[18] ^= kw4r;
	kw4l ^= kw4r & ~subR[16];
445 446
	dw = kw4l & subL[16];
	kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */
447 448 449 450 451 452 453
	/* round 11 */
	subL[14] ^= kw4l; subR[14] ^= kw4r;
	/* round 9 */
	subL[12] ^= kw4l; subR[12] ^= kw4r;
	/* round 7 */
	subL[10] ^= kw4l; subR[10] ^= kw4r;
	kw4l ^= kw4r & ~subR[8];
454 455
	dw = kw4l & subL[8];
	kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */
456 457 458 459 460 461 462 463 464
	/* round 5 */
	subL[6] ^= kw4l; subR[6] ^= kw4r;
	/* round 3 */
	subL[4] ^= kw4l; subR[4] ^= kw4r;
	/* round 1 */
	subL[2] ^= kw4l; subR[2] ^= kw4r;
	/* kw1 */
	subL[0] ^= kw4l; subR[0] ^= kw4r;

465 466 467 468 469 470 471 472 473 474 475 476 477 478
	/* key XOR is end of F-function */
	SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */
	SUBKEY_R(0) = subR[0] ^ subR[2];
	SUBKEY_L(2) = subL[3];       /* round 1 */
	SUBKEY_R(2) = subR[3];
	SUBKEY_L(3) = subL[2] ^ subL[4]; /* round 2 */
	SUBKEY_R(3) = subR[2] ^ subR[4];
	SUBKEY_L(4) = subL[3] ^ subL[5]; /* round 3 */
	SUBKEY_R(4) = subR[3] ^ subR[5];
	SUBKEY_L(5) = subL[4] ^ subL[6]; /* round 4 */
	SUBKEY_R(5) = subR[4] ^ subR[6];
	SUBKEY_L(6) = subL[5] ^ subL[7]; /* round 5 */
	SUBKEY_R(6) = subR[5] ^ subR[7];
	tl = subL[10] ^ (subR[10] & ~subR[8]);
479 480
	dw = tl & subL[8];  /* FL(kl1) */
	tr = subR[10] ^ rol32(dw, 1);
481 482 483 484 485 486 487
	SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
	SUBKEY_R(7) = subR[6] ^ tr;
	SUBKEY_L(8) = subL[8];       /* FL(kl1) */
	SUBKEY_R(8) = subR[8];
	SUBKEY_L(9) = subL[9];       /* FLinv(kl2) */
	SUBKEY_R(9) = subR[9];
	tl = subL[7] ^ (subR[7] & ~subR[9]);
488 489
	dw = tl & subL[9];  /* FLinv(kl2) */
	tr = subR[7] ^ rol32(dw, 1);
490 491 492 493 494 495 496 497 498 499 500
	SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
	SUBKEY_R(10) = tr ^ subR[11];
	SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
	SUBKEY_R(11) = subR[10] ^ subR[12];
	SUBKEY_L(12) = subL[11] ^ subL[13]; /* round 9 */
	SUBKEY_R(12) = subR[11] ^ subR[13];
	SUBKEY_L(13) = subL[12] ^ subL[14]; /* round 10 */
	SUBKEY_R(13) = subR[12] ^ subR[14];
	SUBKEY_L(14) = subL[13] ^ subL[15]; /* round 11 */
	SUBKEY_R(14) = subR[13] ^ subR[15];
	tl = subL[18] ^ (subR[18] & ~subR[16]);
501 502
	dw = tl & subL[16]; /* FL(kl3) */
	tr = subR[18] ^ rol32(dw, 1);
503 504 505 506 507 508 509
	SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
	SUBKEY_R(15) = subR[14] ^ tr;
	SUBKEY_L(16) = subL[16];     /* FL(kl3) */
	SUBKEY_R(16) = subR[16];
	SUBKEY_L(17) = subL[17];     /* FLinv(kl4) */
	SUBKEY_R(17) = subR[17];
	tl = subL[15] ^ (subR[15] & ~subR[17]);
510 511
	dw = tl & subL[17]; /* FLinv(kl4) */
	tr = subR[15] ^ rol32(dw, 1);
512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528
	SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
	SUBKEY_R(18) = tr ^ subR[19];
	SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
	SUBKEY_R(19) = subR[18] ^ subR[20];
	SUBKEY_L(20) = subL[19] ^ subL[21]; /* round 15 */
	SUBKEY_R(20) = subR[19] ^ subR[21];
	SUBKEY_L(21) = subL[20] ^ subL[22]; /* round 16 */
	SUBKEY_R(21) = subR[20] ^ subR[22];
	SUBKEY_L(22) = subL[21] ^ subL[23]; /* round 17 */
	SUBKEY_R(22) = subR[21] ^ subR[23];
	if (max == 24) {
		SUBKEY_L(23) = subL[22];     /* round 18 */
		SUBKEY_R(23) = subR[22];
		SUBKEY_L(24) = subL[24] ^ subL[23]; /* kw3 */
		SUBKEY_R(24) = subR[24] ^ subR[23];
	} else {
		tl = subL[26] ^ (subR[26] & ~subR[24]);
529 530
		dw = tl & subL[24]; /* FL(kl5) */
		tr = subR[26] ^ rol32(dw, 1);
531 532 533 534 535 536 537
		SUBKEY_L(23) = subL[22] ^ tl; /* round 18 */
		SUBKEY_R(23) = subR[22] ^ tr;
		SUBKEY_L(24) = subL[24];     /* FL(kl5) */
		SUBKEY_R(24) = subR[24];
		SUBKEY_L(25) = subL[25];     /* FLinv(kl6) */
		SUBKEY_R(25) = subR[25];
		tl = subL[23] ^ (subR[23] & ~subR[25]);
538 539
		dw = tl & subL[25]; /* FLinv(kl6) */
		tr = subR[23] ^ rol32(dw, 1);
540 541 542 543 544 545 546 547 548 549 550 551 552 553 554
		SUBKEY_L(26) = tl ^ subL[27]; /* round 19 */
		SUBKEY_R(26) = tr ^ subR[27];
		SUBKEY_L(27) = subL[26] ^ subL[28]; /* round 20 */
		SUBKEY_R(27) = subR[26] ^ subR[28];
		SUBKEY_L(28) = subL[27] ^ subL[29]; /* round 21 */
		SUBKEY_R(28) = subR[27] ^ subR[29];
		SUBKEY_L(29) = subL[28] ^ subL[30]; /* round 22 */
		SUBKEY_R(29) = subR[28] ^ subR[30];
		SUBKEY_L(30) = subL[29] ^ subL[31]; /* round 23 */
		SUBKEY_R(30) = subR[29] ^ subR[31];
		SUBKEY_L(31) = subL[30];     /* round 24 */
		SUBKEY_R(31) = subR[30];
		SUBKEY_L(32) = subL[32] ^ subL[31]; /* kw3 */
		SUBKEY_R(32) = subR[32] ^ subR[31];
	}
555 556
}

557 558 559 560 561 562 563 564
static void camellia_setup128(const unsigned char *key, u32 *subkey)
{
	u32 kll, klr, krl, krr;
	u32 il, ir, t0, t1, w0, w1;
	u32 subL[26];
	u32 subR[26];

	/**
565
	 *  k == kll || klr || krl || krr (|| is concatenation)
566
	 */
567 568 569 570
	kll = get_unaligned_be32(key);
	klr = get_unaligned_be32(key + 4);
	krl = get_unaligned_be32(key + 8);
	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 */
613 614
	kll = subL[0]; klr = subR[0];
	krl = subL[1]; krr = subR[1];
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633
	CAMELLIA_F(kll, klr,
		   CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
		   w0, w1, il, ir, t0, t1);
	krl ^= w0; krr ^= w1;
	CAMELLIA_F(krl, krr,
		   CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
		   kll, klr, il, ir, t0, t1);
	/* current status == (kll, klr, w0, w1) */
	CAMELLIA_F(kll, klr,
		   CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
		   krl, krr, il, ir, t0, t1);
	krl ^= w0; krr ^= w1;
	CAMELLIA_F(krl, krr,
		   CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
		   w0, w1, il, ir, t0, t1);
	kll ^= w0; klr ^= w1;

	/* generate KA dependent subkeys */
	/* k1, k2 */
634 635
	subL[2] = kll; subR[2] = klr;
	subL[3] = krl; subR[3] = krr;
636
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
637
	/* k5,k6 */
638 639
	subL[6] = kll; subR[6] = klr;
	subL[7] = krl; subR[7] = krr;
640
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
641
	/* kl1, kl2 */
642 643
	subL[8] = kll; subR[8] = klr;
	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 */
649 650
	subL[14] = kll; subR[14] = klr;
	subL[15] = krl; subR[15] = krr;
651
	ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
652
	/* k15, k16 */
653 654
	subL[20] = kll; subR[20] = klr;
	subL[21] = krl; subR[21] = krr;
655
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
656
	/* kw3, kw4 */
657 658
	subL[24] = kll; subR[24] = klr;
	subL[25] = krl; subR[25] = krr;
659

660
	camellia_setup_tail(subkey, subL, subR, 24);
661 662 663 664
}

static void camellia_setup256(const unsigned char *key, u32 *subkey)
{
665 666
	u32 kll, klr, krl, krr;        /* left half of key */
	u32 krll, krlr, krrl, krrr;    /* right half of key */
667 668 669 670 671 672
	u32 il, ir, t0, t1, w0, w1;    /* temporary variables */
	u32 subL[34];
	u32 subR[34];

	/**
	 *  key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
673
	 *  (|| is concatenation)
674
	 */
675 676 677 678 679 680 681 682
	kll = get_unaligned_be32(key);
	klr = get_unaligned_be32(key + 4);
	krl = get_unaligned_be32(key + 8);
	krr = get_unaligned_be32(key + 12);
	krll = get_unaligned_be32(key + 16);
	krlr = get_unaligned_be32(key + 20);
	krrl = get_unaligned_be32(key + 24);
	krrr = get_unaligned_be32(key + 28);
683 684 685

	/* generate KL dependent subkeys */
	/* 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 */
734 735
	kll = subL[0] ^ krll; klr = subR[0] ^ krlr;
	krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765
	CAMELLIA_F(kll, klr,
		   CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
		   w0, w1, il, ir, t0, t1);
	krl ^= w0; krr ^= w1;
	CAMELLIA_F(krl, krr,
		   CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
		   kll, klr, il, ir, t0, t1);
	kll ^= krll; klr ^= krlr;
	CAMELLIA_F(kll, klr,
		   CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
		   krl, krr, il, ir, t0, t1);
	krl ^= w0 ^ krrl; krr ^= w1 ^ krrr;
	CAMELLIA_F(krl, krr,
		   CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
		   w0, w1, il, ir, t0, t1);
	kll ^= w0; klr ^= w1;

	/* generate KB */
	krll ^= kll; krlr ^= klr;
	krrl ^= krl; krrr ^= krr;
	CAMELLIA_F(krll, krlr,
		   CAMELLIA_SIGMA5L, CAMELLIA_SIGMA5R,
		   w0, w1, il, ir, t0, t1);
	krrl ^= w0; krrr ^= w1;
	CAMELLIA_F(krrl, krrr,
		   CAMELLIA_SIGMA6L, CAMELLIA_SIGMA6R,
		   w0, w1, il, ir, t0, t1);
	krll ^= w0; krlr ^= w1;

	/* 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;
776 777
	/* rotation left shift 32bit */
	/* 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;
787 788 789

	/* generate KB dependent subkeys */
	/* 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);
810 811 812 813 814
}

static void camellia_setup192(const unsigned char *key, u32 *subkey)
{
	unsigned char kk[32];
815
	u32 krll, krlr, krrl, krrr;
816 817

	memcpy(kk, key, 24);
818 819
	memcpy((unsigned char *)&krll, key+16, 4);
	memcpy((unsigned char *)&krlr, key+20, 4);
820 821 822 823 824 825 826 827
	krrl = ~krll;
	krrr = ~krlr;
	memcpy(kk+24, (unsigned char *)&krrl, 4);
	memcpy(kk+28, (unsigned char *)&krrr, 4);
	camellia_setup256(kk, subkey);
}


828 829 830
/*
 * Encrypt/decrypt
 */
831
#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \
832 833 834 835 836
	t0 = kll;							\
	t2 = krr;							\
	t0 &= ll;							\
	t2 |= rr;							\
	rl ^= t2;							\
837
	lr ^= rol32(t0, 1);						\
838 839 840 841 842
	t3 = krl;							\
	t1 = klr;							\
	t3 &= rl;							\
	t1 |= lr;							\
	ll ^= t1;							\
843
	rr ^= rol32(t3, 1);						\
844
})
845

846
#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({		\
847 848
	yl ^= kl;							\
	yr ^= kr;							\
849
	ir =  camellia_sp1110[(u8)xr];					\
850 851
	il =  camellia_sp1110[(u8)(xl >> 24)];				\
	ir ^= camellia_sp0222[(u8)(xr >> 24)];				\
852 853 854 855 856
	il ^= camellia_sp0222[(u8)(xl >> 16)];				\
	ir ^= camellia_sp3033[(u8)(xr >> 16)];				\
	il ^= camellia_sp3033[(u8)(xl >> 8)];				\
	ir ^= camellia_sp4404[(u8)(xr >> 8)];				\
	il ^= camellia_sp4404[(u8)xl];					\
857
	ir ^= il;							\
858
	yl ^= ir;							\
859 860
	yr ^= ror32(il, 8) ^ ir;					\
})
861

862 863
/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
static 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 */
868 869
	io[0] ^= SUBKEY_L(0);
	io[1] ^= SUBKEY_R(0);
870

871
	/* main iteration */
872
#define ROUNDS(i) ({ \
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
			 io[0], io[1], il, ir); \
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
			 io[0], io[1], il, ir); \
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
			 io[0], io[1], il, ir); \
891 892
})
#define FLS(i) ({ \
893 894 895 896
	CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
		     SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
		     SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
		     t0, t1, il, ir); \
897
})
898 899 900 901 902 903 904 905 906 907

	ROUNDS(0);
	FLS(8);
	ROUNDS(8);
	FLS(16);
	ROUNDS(16);
	if (max == 32) {
		FLS(24);
		ROUNDS(24);
	}
908

909 910
#undef ROUNDS
#undef FLS
911 912

	/* post whitening but kw4 */
913 914 915
	io[2] ^= SUBKEY_L(max);
	io[3] ^= SUBKEY_R(max);
	/* NB: io[0],[1] should be swapped with [2],[3] by caller! */
916 917
}

918
static 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 */
923 924
	io[0] ^= SUBKEY_L(i);
	io[1] ^= SUBKEY_R(i);
925 926

	/* main iteration */
927
#define ROUNDS(i) ({ \
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 6), SUBKEY_R(i + 6), \
			 io[0], io[1], il, ir); \
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 5), SUBKEY_R(i + 5), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 4), SUBKEY_R(i + 4), \
			 io[0], io[1], il, ir); \
	CAMELLIA_ROUNDSM(io[0], io[1], \
			 SUBKEY_L(i + 3), SUBKEY_R(i + 3), \
			 io[2], io[3], il, ir); \
	CAMELLIA_ROUNDSM(io[2], io[3], \
			 SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
			 io[0], io[1], il, ir); \
946 947
})
#define FLS(i) ({ \
948 949 950 951
	CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
		     SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
		     SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
		     t0, t1, il, ir); \
952
})
953 954 955 956 957 958 959 960 961 962

	if (i == 32) {
		ROUNDS(24);
		FLS(24);
	}
	ROUNDS(16);
	FLS(16);
	ROUNDS(8);
	FLS(8);
	ROUNDS(0);
963

964 965
#undef ROUNDS
#undef FLS
966 967

	/* post whitening but kw4 */
968 969 970
	io[2] ^= SUBKEY_L(0);
	io[3] ^= SUBKEY_R(0);
	/* NB: 0,1 should be swapped with 2,3 by caller! */
971 972 973
}


974 975
struct camellia_ctx {
	int key_length;
976
	u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];
977 978
};

979 980 981 982 983 984 985 986 987 988 989 990 991 992 993
static int
camellia_set_key(struct crypto_tfm *tfm, const u8 *in_key,
		 unsigned int key_len)
{
	struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
	const unsigned char *key = (const unsigned char *)in_key;
	u32 *flags = &tfm->crt_flags;

	if (key_len != 16 && key_len != 24 && key_len != 32) {
		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
		return -EINVAL;
	}

	cctx->key_length = key_len;

994
	switch (key_len) {
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
	case 16:
		camellia_setup128(key, cctx->key_table);
		break;
	case 24:
		camellia_setup192(key, cctx->key_table);
		break;
	case 32:
		camellia_setup256(key, cctx->key_table);
		break;
	}

	return 0;
}

static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
	const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
	const __be32 *src = (const __be32 *)in;
	__be32 *dst = (__be32 *)out;
1014
	unsigned int max;
1015

1016
	u32 tmp[4];
1017

1018 1019 1020 1021
	tmp[0] = be32_to_cpu(src[0]);
	tmp[1] = be32_to_cpu(src[1]);
	tmp[2] = be32_to_cpu(src[2]);
	tmp[3] = be32_to_cpu(src[3]);
1022

1023 1024 1025 1026 1027 1028
	if (cctx->key_length == 16)
		max = 24;
	else
		max = 32; /* for key lengths of 24 and 32 */

	camellia_do_encrypt(cctx->key_table, tmp, max);
1029

1030 1031 1032 1033 1034
	/* do_encrypt returns 0,1 swapped with 2,3 */
	dst[0] = cpu_to_be32(tmp[2]);
	dst[1] = cpu_to_be32(tmp[3]);
	dst[2] = cpu_to_be32(tmp[0]);
	dst[3] = cpu_to_be32(tmp[1]);
1035 1036 1037 1038 1039 1040 1041
}

static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
	const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
	const __be32 *src = (const __be32 *)in;
	__be32 *dst = (__be32 *)out;
1042
	unsigned int max;
1043

1044
	u32 tmp[4];
1045

1046 1047 1048 1049
	tmp[0] = be32_to_cpu(src[0]);
	tmp[1] = be32_to_cpu(src[1]);
	tmp[2] = be32_to_cpu(src[2]);
	tmp[3] = be32_to_cpu(src[3]);
1050

1051 1052 1053 1054 1055 1056
	if (cctx->key_length == 16)
		max = 24;
	else
		max = 32; /* for key lengths of 24 and 32 */

	camellia_do_decrypt(cctx->key_table, tmp, max);
1057

1058 1059 1060 1061 1062
	/* do_decrypt returns 0,1 swapped with 2,3 */
	dst[0] = cpu_to_be32(tmp[2]);
	dst[1] = cpu_to_be32(tmp[3]);
	dst[2] = cpu_to_be32(tmp[0]);
	dst[3] = cpu_to_be32(tmp[1]);
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
}

static struct crypto_alg camellia_alg = {
	.cra_name		=	"camellia",
	.cra_driver_name	=	"camellia-generic",
	.cra_priority		=	100,
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	CAMELLIA_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof(struct camellia_ctx),
	.cra_alignmask		=	3,
	.cra_module		=	THIS_MODULE,
	.cra_u			=	{
		.cipher = {
			.cia_min_keysize	=	CAMELLIA_MIN_KEY_SIZE,
			.cia_max_keysize	=	CAMELLIA_MAX_KEY_SIZE,
			.cia_setkey		=	camellia_set_key,
			.cia_encrypt		=	camellia_encrypt,
			.cia_decrypt		=	camellia_decrypt
		}
	}
};

static int __init camellia_init(void)
{
	return crypto_register_alg(&camellia_alg);
}

static void __exit camellia_fini(void)
{
	crypto_unregister_alg(&camellia_alg);
}

module_init(camellia_init);
module_exit(camellia_fini);

MODULE_DESCRIPTION("Camellia Cipher Algorithm");
MODULE_LICENSE("GPL");
1100
MODULE_ALIAS_CRYPTO("camellia");
1101
MODULE_ALIAS_CRYPTO("camellia-generic");