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
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/*
 * 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>
40 41

static const u32 camellia_sp1110[256] = {
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 99 100 101 102 103 104 105
	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,
106 107 108
};

static const u32 camellia_sp0222[256] = {
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
	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,
173 174 175
};

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,
240 241 242
};

static const u32 camellia_sp4404[256] = {
243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
	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,
307 308 309
};


310 311 312 313 314
#define CAMELLIA_MIN_KEY_SIZE        16
#define CAMELLIA_MAX_KEY_SIZE        32
#define CAMELLIA_BLOCK_SIZE          16
#define CAMELLIA_TABLE_BYTE_LEN     272

315 316 317 318 319 320
/*
 * 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!
 */

321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339

/* 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
 */
340
#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({		\
341 342 343 344 345
	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));	\
346
})
347

348
#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({	\
349 350 351 352 353 354
	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));	\
355
})
356

357
#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({	\
358 359 360 361
	il = xl ^ kl;						\
	ir = xr ^ kr;						\
	t0 = il >> 16;						\
	t1 = ir >> 16;						\
362 363 364
	yl = camellia_sp1110[(u8)(ir)]				\
	   ^ camellia_sp0222[(u8)(t1 >> 8)]			\
	   ^ camellia_sp3033[(u8)(t1)]				\
365
	   ^ camellia_sp4404[(u8)(ir >> 8)];			\
366 367
	yr = camellia_sp1110[(u8)(t0 >> 8)]			\
	   ^ camellia_sp0222[(u8)(t0)]				\
368
	   ^ camellia_sp3033[(u8)(il >> 8)]			\
369
	   ^ camellia_sp4404[(u8)(il)];				\
370
	yl ^= yr;						\
371
	yr = ror32(yr, 8);					\
372
	yr ^= yl;						\
373
})
374

375 376
#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
377

378
static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
379
{
380
	u32 dw, tl, tr;
381
	u32 kw4l, kw4r;
382

383 384 385 386 387 388 389 390
	/* 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];
391 392
	dw = subL[1] & subL[9];
	subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */
393 394 395 396 397 398 399
	/* 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];
400 401
	dw = subL[1] & subL[17];
	subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */
402 403 404 405 406 407 408 409 410 411 412 413 414 415
	/* 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];
416 417
		dw = subL[1] & subL[25];
		subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435
		/* 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];
436 437
		dw = kw4l & subL[24];
		kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */
438 439 440 441 442 443 444 445
	}
	/* 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];
446 447
	dw = kw4l & subL[16];
	kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */
448 449 450 451 452 453 454
	/* 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];
455 456
	dw = kw4l & subL[8];
	kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */
457 458 459 460 461 462 463 464 465
	/* 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;

466 467 468 469 470 471 472 473 474 475 476 477 478 479
	/* 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]);
480 481
	dw = tl & subL[8];  /* FL(kl1) */
	tr = subR[10] ^ rol32(dw, 1);
482 483 484 485 486 487 488
	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]);
489 490
	dw = tl & subL[9];  /* FLinv(kl2) */
	tr = subR[7] ^ rol32(dw, 1);
491 492 493 494 495 496 497 498 499 500 501
	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]);
502 503
	dw = tl & subL[16]; /* FL(kl3) */
	tr = subR[18] ^ rol32(dw, 1);
504 505 506 507 508 509 510
	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]);
511 512
	dw = tl & subL[17]; /* FLinv(kl4) */
	tr = subR[15] ^ rol32(dw, 1);
513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529
	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]);
530 531
		dw = tl & subL[24]; /* FL(kl5) */
		tr = subR[26] ^ rol32(dw, 1);
532 533 534 535 536 537 538
		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]);
539 540
		dw = tl & subL[25]; /* FLinv(kl6) */
		tr = subR[23] ^ rol32(dw, 1);
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
		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];
	}
556 557
}

558 559 560 561 562 563 564 565
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];

	/**
566
	 *  k == kll || klr || krl || krr (|| is concatenation)
567
	 */
568 569 570 571
	kll = get_unaligned_be32(key);
	klr = get_unaligned_be32(key + 4);
	krl = get_unaligned_be32(key + 8);
	krr = get_unaligned_be32(key + 12);
572

573
	/* generate KL dependent subkeys */
574
	/* kw1 */
575
	subL[0] = kll; subR[0] = klr;
576
	/* kw2 */
577
	subL[1] = krl; subR[1] = krr;
578
	/* rotation left shift 15bit */
579
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
580
	/* k3 */
581
	subL[4] = kll; subR[4] = klr;
582
	/* k4 */
583
	subL[5] = krl; subR[5] = krr;
584
	/* rotation left shift 15+30bit */
585
	ROLDQ(kll, klr, krl, krr, w0, w1, 30);
586
	/* k7 */
587
	subL[10] = kll; subR[10] = klr;
588
	/* k8 */
589
	subL[11] = krl; subR[11] = krr;
590
	/* rotation left shift 15+30+15bit */
591
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
592
	/* k10 */
593
	subL[13] = krl; subR[13] = krr;
594
	/* rotation left shift 15+30+15+17 bit */
595
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
596
	/* kl3 */
597
	subL[16] = kll; subR[16] = klr;
598
	/* kl4 */
599
	subL[17] = krl; subR[17] = krr;
600
	/* rotation left shift 15+30+15+17+17 bit */
601
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
602
	/* k13 */
603
	subL[18] = kll; subR[18] = klr;
604
	/* k14 */
605
	subL[19] = krl; subR[19] = krr;
606
	/* rotation left shift 15+30+15+17+17+17 bit */
607
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
608
	/* k17 */
609
	subL[22] = kll; subR[22] = klr;
610
	/* k18 */
611
	subL[23] = krl; subR[23] = krr;
612 613

	/* generate KA */
614 615
	kll = subL[0]; klr = subR[0];
	krl = subL[1]; krr = subR[1];
616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634
	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 */
635 636
	subL[2] = kll; subR[2] = klr;
	subL[3] = krl; subR[3] = krr;
637
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
638
	/* k5,k6 */
639 640
	subL[6] = kll; subR[6] = klr;
	subL[7] = krl; subR[7] = krr;
641
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
642
	/* kl1, kl2 */
643 644
	subL[8] = kll; subR[8] = klr;
	subL[9] = krl; subR[9] = krr;
645
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
646
	/* k9 */
647
	subL[12] = kll; subR[12] = klr;
648
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
649
	/* k11, k12 */
650 651
	subL[14] = kll; subR[14] = klr;
	subL[15] = krl; subR[15] = krr;
652
	ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
653
	/* k15, k16 */
654 655
	subL[20] = kll; subR[20] = klr;
	subL[21] = krl; subR[21] = krr;
656
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
657
	/* kw3, kw4 */
658 659
	subL[24] = kll; subR[24] = klr;
	subL[25] = krl; subR[25] = krr;
660

661
	camellia_setup_tail(subkey, subL, subR, 24);
662 663 664 665
}

static void camellia_setup256(const unsigned char *key, u32 *subkey)
{
666 667
	u32 kll, klr, krl, krr;        /* left half of key */
	u32 krll, krlr, krrl, krrr;    /* right half of key */
668 669 670 671 672 673
	u32 il, ir, t0, t1, w0, w1;    /* temporary variables */
	u32 subL[34];
	u32 subR[34];

	/**
	 *  key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
674
	 *  (|| is concatenation)
675
	 */
676 677 678 679 680 681 682 683
	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);
684 685 686

	/* generate KL dependent subkeys */
	/* kw1 */
687
	subL[0] = kll; subR[0] = klr;
688
	/* kw2 */
689
	subL[1] = krl; subR[1] = krr;
690
	ROLDQo32(kll, klr, krl, krr, w0, w1, 45);
691
	/* k9 */
692
	subL[12] = kll; subR[12] = klr;
693
	/* k10 */
694
	subL[13] = krl; subR[13] = krr;
695
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
696
	/* kl3 */
697
	subL[16] = kll; subR[16] = klr;
698
	/* kl4 */
699
	subL[17] = krl; subR[17] = krr;
700
	ROLDQ(kll, klr, krl, krr, w0, w1, 17);
701
	/* k17 */
702
	subL[22] = kll; subR[22] = klr;
703
	/* k18 */
704
	subL[23] = krl; subR[23] = krr;
705
	ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
706
	/* k23 */
707
	subL[30] = kll; subR[30] = klr;
708
	/* k24 */
709
	subL[31] = krl; subR[31] = krr;
710 711

	/* generate KR dependent subkeys */
712
	ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
713
	/* k3 */
714
	subL[4] = krll; subR[4] = krlr;
715
	/* k4 */
716
	subL[5] = krrl; subR[5] = krrr;
717
	ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
718
	/* kl1 */
719
	subL[8] = krll; subR[8] = krlr;
720
	/* kl2 */
721
	subL[9] = krrl; subR[9] = krrr;
722
	ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
723
	/* k13 */
724
	subL[18] = krll; subR[18] = krlr;
725
	/* k14 */
726
	subL[19] = krrl; subR[19] = krrr;
727
	ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
728
	/* k19 */
729
	subL[26] = krll; subR[26] = krlr;
730
	/* k20 */
731
	subL[27] = krrl; subR[27] = krrr;
732
	ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
733 734

	/* generate KA */
735 736
	kll = subL[0] ^ krll; klr = subR[0] ^ krlr;
	krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;
737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766
	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 */
767
	ROLDQ(kll, klr, krl, krr, w0, w1, 15);
768
	/* k5 */
769
	subL[6] = kll; subR[6] = klr;
770
	/* k6 */
771
	subL[7] = krl; subR[7] = krr;
772
	ROLDQ(kll, klr, krl, krr, w0, w1, 30);
773
	/* k11 */
774
	subL[14] = kll; subR[14] = klr;
775
	/* k12 */
776
	subL[15] = krl; subR[15] = krr;
777 778
	/* rotation left shift 32bit */
	/* kl5 */
779
	subL[24] = klr; subR[24] = krl;
780
	/* kl6 */
781
	subL[25] = krr; subR[25] = kll;
782
	/* rotation left shift 49 from k11,k12 -> k21,k22 */
783
	ROLDQo32(kll, klr, krl, krr, w0, w1, 49);
784
	/* k21 */
785
	subL[28] = kll; subR[28] = klr;
786
	/* k22 */
787
	subL[29] = krl; subR[29] = krr;
788 789 790

	/* generate KB dependent subkeys */
	/* k1 */
791
	subL[2] = krll; subR[2] = krlr;
792
	/* k2 */
793
	subL[3] = krrl; subR[3] = krrr;
794
	ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
795
	/* k7 */
796
	subL[10] = krll; subR[10] = krlr;
797
	/* k8 */
798
	subL[11] = krrl; subR[11] = krrr;
799
	ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
800
	/* k15 */
801
	subL[20] = krll; subR[20] = krlr;
802
	/* k16 */
803
	subL[21] = krrl; subR[21] = krrr;
804
	ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 51);
805
	/* kw3 */
806
	subL[32] = krll; subR[32] = krlr;
807
	/* kw4 */
808
	subL[33] = krrl; subR[33] = krrr;
809

810
	camellia_setup_tail(subkey, subL, subR, 32);
811 812 813 814 815
}

static void camellia_setup192(const unsigned char *key, u32 *subkey)
{
	unsigned char kk[32];
816
	u32 krll, krlr, krrl, krrr;
817 818

	memcpy(kk, key, 24);
819 820
	memcpy((unsigned char *)&krll, key+16, 4);
	memcpy((unsigned char *)&krlr, key+20, 4);
821 822 823 824 825 826 827 828
	krrl = ~krll;
	krrr = ~krlr;
	memcpy(kk+24, (unsigned char *)&krrl, 4);
	memcpy(kk+28, (unsigned char *)&krrr, 4);
	camellia_setup256(kk, subkey);
}


829 830 831
/*
 * Encrypt/decrypt
 */
832
#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \
833 834 835 836 837
	t0 = kll;							\
	t2 = krr;							\
	t0 &= ll;							\
	t2 |= rr;							\
	rl ^= t2;							\
838
	lr ^= rol32(t0, 1);						\
839 840 841 842 843
	t3 = krl;							\
	t1 = klr;							\
	t3 &= rl;							\
	t1 |= lr;							\
	ll ^= t1;							\
844
	rr ^= rol32(t3, 1);						\
845
})
846

847
#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({		\
848 849
	yl ^= kl;							\
	yr ^= kr;							\
850
	ir =  camellia_sp1110[(u8)xr];					\
851 852
	il =  camellia_sp1110[(u8)(xl >> 24)];				\
	ir ^= camellia_sp0222[(u8)(xr >> 24)];				\
853 854 855 856 857
	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];					\
858
	ir ^= il;							\
859
	yl ^= ir;							\
860 861
	yr ^= ror32(il, 8) ^ ir;					\
})
862

863 864
/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
865
{
866
	u32 il, ir, t0, t1;            /* temporary variables */
867

868
	/* pre whitening but absorb kw2 */
869 870
	io[0] ^= SUBKEY_L(0);
	io[1] ^= SUBKEY_R(0);
871

872
	/* main iteration */
873
#define ROUNDS(i) ({ \
874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
	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); \
892 893
})
#define FLS(i) ({ \
894 895 896 897
	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); \
898
})
899 900 901 902 903 904 905 906 907 908

	ROUNDS(0);
	FLS(8);
	ROUNDS(8);
	FLS(16);
	ROUNDS(16);
	if (max == 32) {
		FLS(24);
		ROUNDS(24);
	}
909

910 911
#undef ROUNDS
#undef FLS
912 913

	/* post whitening but kw4 */
914 915 916
	io[2] ^= SUBKEY_L(max);
	io[3] ^= SUBKEY_R(max);
	/* NB: io[0],[1] should be swapped with [2],[3] by caller! */
917 918
}

919
static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
920
{
921
	u32 il, ir, t0, t1;            /* temporary variables */
922

923
	/* pre whitening but absorb kw2 */
924 925
	io[0] ^= SUBKEY_L(i);
	io[1] ^= SUBKEY_R(i);
926 927

	/* main iteration */
928
#define ROUNDS(i) ({ \
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
	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); \
947 948
})
#define FLS(i) ({ \
949 950 951 952
	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); \
953
})
954 955 956 957 958 959 960 961 962 963

	if (i == 32) {
		ROUNDS(24);
		FLS(24);
	}
	ROUNDS(16);
	FLS(16);
	ROUNDS(8);
	FLS(8);
	ROUNDS(0);
964

965 966
#undef ROUNDS
#undef FLS
967 968

	/* post whitening but kw4 */
969 970 971
	io[2] ^= SUBKEY_L(0);
	io[3] ^= SUBKEY_R(0);
	/* NB: 0,1 should be swapped with 2,3 by caller! */
972 973 974
}


975 976
struct camellia_ctx {
	int key_length;
977
	u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];
978 979
};

980 981 982 983 984 985 986 987 988 989 990 991 992 993 994
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;

995
	switch (key_len) {
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
	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;
1015
	unsigned int max;
1016

1017
	u32 tmp[4];
1018

1019 1020 1021 1022
	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]);
1023

1024 1025 1026 1027 1028 1029
	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);
1030

1031 1032 1033 1034 1035
	/* 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]);
1036 1037 1038 1039 1040 1041 1042
}

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;
1043
	unsigned int max;
1044

1045
	u32 tmp[4];
1046

1047 1048 1049 1050
	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]);
1051

1052 1053 1054 1055 1056 1057
	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);
1058

1059 1060 1061 1062 1063
	/* 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]);
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 1100
}

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");
1101
MODULE_ALIAS_CRYPTO("camellia");
1102
MODULE_ALIAS_CRYPTO("camellia-generic");