git.oblomov.eu Git - linux-2.6/blob - crypto/camellia.c

   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, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18  */
  19
  20 /*
  21  * Algorithm Specification
  22  *  http://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html
  23  */
  24
  25 /*
  26  *
  27  * NOTE --- NOTE --- NOTE --- NOTE
  28  * This implementation assumes that all memory addresses passed
  29  * as parameters are four-byte aligned.
  30  *
  31  */
  32
  33 #include <linux/crypto.h>
  34 #include <linux/errno.h>
  35 #include <linux/init.h>
  36 #include <linux/kernel.h>
  37 #include <linux/module.h>
  38
  39 static const u32 camellia_sp1110[256] = {
  40         0x70707000,0x82828200,0x2c2c2c00,0xececec00,
  41         0xb3b3b300,0x27272700,0xc0c0c000,0xe5e5e500,
  42         0xe4e4e400,0x85858500,0x57575700,0x35353500,
  43         0xeaeaea00,0x0c0c0c00,0xaeaeae00,0x41414100,
  44         0x23232300,0xefefef00,0x6b6b6b00,0x93939300,
  45         0x45454500,0x19191900,0xa5a5a500,0x21212100,
  46         0xededed00,0x0e0e0e00,0x4f4f4f00,0x4e4e4e00,
  47         0x1d1d1d00,0x65656500,0x92929200,0xbdbdbd00,
  48         0x86868600,0xb8b8b800,0xafafaf00,0x8f8f8f00,
  49         0x7c7c7c00,0xebebeb00,0x1f1f1f00,0xcecece00,
  50         0x3e3e3e00,0x30303000,0xdcdcdc00,0x5f5f5f00,
  51         0x5e5e5e00,0xc5c5c500,0x0b0b0b00,0x1a1a1a00,
  52         0xa6a6a600,0xe1e1e100,0x39393900,0xcacaca00,
  53         0xd5d5d500,0x47474700,0x5d5d5d00,0x3d3d3d00,
  54         0xd9d9d900,0x01010100,0x5a5a5a00,0xd6d6d600,
  55         0x51515100,0x56565600,0x6c6c6c00,0x4d4d4d00,
  56         0x8b8b8b00,0x0d0d0d00,0x9a9a9a00,0x66666600,
  57         0xfbfbfb00,0xcccccc00,0xb0b0b000,0x2d2d2d00,
  58         0x74747400,0x12121200,0x2b2b2b00,0x20202000,
  59         0xf0f0f000,0xb1b1b100,0x84848400,0x99999900,
  60         0xdfdfdf00,0x4c4c4c00,0xcbcbcb00,0xc2c2c200,
  61         0x34343400,0x7e7e7e00,0x76767600,0x05050500,
  62         0x6d6d6d00,0xb7b7b700,0xa9a9a900,0x31313100,
  63         0xd1d1d100,0x17171700,0x04040400,0xd7d7d700,
  64         0x14141400,0x58585800,0x3a3a3a00,0x61616100,
  65         0xdedede00,0x1b1b1b00,0x11111100,0x1c1c1c00,
  66         0x32323200,0x0f0f0f00,0x9c9c9c00,0x16161600,
  67         0x53535300,0x18181800,0xf2f2f200,0x22222200,
  68         0xfefefe00,0x44444400,0xcfcfcf00,0xb2b2b200,
  69         0xc3c3c300,0xb5b5b500,0x7a7a7a00,0x91919100,
  70         0x24242400,0x08080800,0xe8e8e800,0xa8a8a800,
  71         0x60606000,0xfcfcfc00,0x69696900,0x50505000,
  72         0xaaaaaa00,0xd0d0d000,0xa0a0a000,0x7d7d7d00,
  73         0xa1a1a100,0x89898900,0x62626200,0x97979700,
  74         0x54545400,0x5b5b5b00,0x1e1e1e00,0x95959500,
  75         0xe0e0e000,0xffffff00,0x64646400,0xd2d2d200,
  76         0x10101000,0xc4c4c400,0x00000000,0x48484800,
  77         0xa3a3a300,0xf7f7f700,0x75757500,0xdbdbdb00,
  78         0x8a8a8a00,0x03030300,0xe6e6e600,0xdadada00,
  79         0x09090900,0x3f3f3f00,0xdddddd00,0x94949400,
  80         0x87878700,0x5c5c5c00,0x83838300,0x02020200,
  81         0xcdcdcd00,0x4a4a4a00,0x90909000,0x33333300,
  82         0x73737300,0x67676700,0xf6f6f600,0xf3f3f300,
  83         0x9d9d9d00,0x7f7f7f00,0xbfbfbf00,0xe2e2e200,
  84         0x52525200,0x9b9b9b00,0xd8d8d800,0x26262600,
  85         0xc8c8c800,0x37373700,0xc6c6c600,0x3b3b3b00,
  86         0x81818100,0x96969600,0x6f6f6f00,0x4b4b4b00,
  87         0x13131300,0xbebebe00,0x63636300,0x2e2e2e00,
  88         0xe9e9e900,0x79797900,0xa7a7a700,0x8c8c8c00,
  89         0x9f9f9f00,0x6e6e6e00,0xbcbcbc00,0x8e8e8e00,
  90         0x29292900,0xf5f5f500,0xf9f9f900,0xb6b6b600,
  91         0x2f2f2f00,0xfdfdfd00,0xb4b4b400,0x59595900,
  92         0x78787800,0x98989800,0x06060600,0x6a6a6a00,
  93         0xe7e7e700,0x46464600,0x71717100,0xbababa00,
  94         0xd4d4d400,0x25252500,0xababab00,0x42424200,
  95         0x88888800,0xa2a2a200,0x8d8d8d00,0xfafafa00,
  96         0x72727200,0x07070700,0xb9b9b900,0x55555500,
  97         0xf8f8f800,0xeeeeee00,0xacacac00,0x0a0a0a00,
  98         0x36363600,0x49494900,0x2a2a2a00,0x68686800,
  99         0x3c3c3c00,0x38383800,0xf1f1f100,0xa4a4a400,
 100         0x40404000,0x28282800,0xd3d3d300,0x7b7b7b00,
 101         0xbbbbbb00,0xc9c9c900,0x43434300,0xc1c1c100,
 102         0x15151500,0xe3e3e300,0xadadad00,0xf4f4f400,
 103         0x77777700,0xc7c7c700,0x80808000,0x9e9e9e00,
 104 };
 105
 106 static const u32 camellia_sp0222[256] = {
 107         0x00e0e0e0,0x00050505,0x00585858,0x00d9d9d9,
 108         0x00676767,0x004e4e4e,0x00818181,0x00cbcbcb,
 109         0x00c9c9c9,0x000b0b0b,0x00aeaeae,0x006a6a6a,
 110         0x00d5d5d5,0x00181818,0x005d5d5d,0x00828282,
 111         0x00464646,0x00dfdfdf,0x00d6d6d6,0x00272727,
 112         0x008a8a8a,0x00323232,0x004b4b4b,0x00424242,
 113         0x00dbdbdb,0x001c1c1c,0x009e9e9e,0x009c9c9c,
 114         0x003a3a3a,0x00cacaca,0x00252525,0x007b7b7b,
 115         0x000d0d0d,0x00717171,0x005f5f5f,0x001f1f1f,
 116         0x00f8f8f8,0x00d7d7d7,0x003e3e3e,0x009d9d9d,
 117         0x007c7c7c,0x00606060,0x00b9b9b9,0x00bebebe,
 118         0x00bcbcbc,0x008b8b8b,0x00161616,0x00343434,
 119         0x004d4d4d,0x00c3c3c3,0x00727272,0x00959595,
 120         0x00ababab,0x008e8e8e,0x00bababa,0x007a7a7a,
 121         0x00b3b3b3,0x00020202,0x00b4b4b4,0x00adadad,
 122         0x00a2a2a2,0x00acacac,0x00d8d8d8,0x009a9a9a,
 123         0x00171717,0x001a1a1a,0x00353535,0x00cccccc,
 124         0x00f7f7f7,0x00999999,0x00616161,0x005a5a5a,
 125         0x00e8e8e8,0x00242424,0x00565656,0x00404040,
 126         0x00e1e1e1,0x00636363,0x00090909,0x00333333,
 127         0x00bfbfbf,0x00989898,0x00979797,0x00858585,
 128         0x00686868,0x00fcfcfc,0x00ececec,0x000a0a0a,
 129         0x00dadada,0x006f6f6f,0x00535353,0x00626262,
 130         0x00a3a3a3,0x002e2e2e,0x00080808,0x00afafaf,
 131         0x00282828,0x00b0b0b0,0x00747474,0x00c2c2c2,
 132         0x00bdbdbd,0x00363636,0x00222222,0x00383838,
 133         0x00646464,0x001e1e1e,0x00393939,0x002c2c2c,
 134         0x00a6a6a6,0x00303030,0x00e5e5e5,0x00444444,
 135         0x00fdfdfd,0x00888888,0x009f9f9f,0x00656565,
 136         0x00878787,0x006b6b6b,0x00f4f4f4,0x00232323,
 137         0x00484848,0x00101010,0x00d1d1d1,0x00515151,
 138         0x00c0c0c0,0x00f9f9f9,0x00d2d2d2,0x00a0a0a0,
 139         0x00555555,0x00a1a1a1,0x00414141,0x00fafafa,
 140         0x00434343,0x00131313,0x00c4c4c4,0x002f2f2f,
 141         0x00a8a8a8,0x00b6b6b6,0x003c3c3c,0x002b2b2b,
 142         0x00c1c1c1,0x00ffffff,0x00c8c8c8,0x00a5a5a5,
 143         0x00202020,0x00898989,0x00000000,0x00909090,
 144         0x00474747,0x00efefef,0x00eaeaea,0x00b7b7b7,
 145         0x00151515,0x00060606,0x00cdcdcd,0x00b5b5b5,
 146         0x00121212,0x007e7e7e,0x00bbbbbb,0x00292929,
 147         0x000f0f0f,0x00b8b8b8,0x00070707,0x00040404,
 148         0x009b9b9b,0x00949494,0x00212121,0x00666666,
 149         0x00e6e6e6,0x00cecece,0x00ededed,0x00e7e7e7,
 150         0x003b3b3b,0x00fefefe,0x007f7f7f,0x00c5c5c5,
 151         0x00a4a4a4,0x00373737,0x00b1b1b1,0x004c4c4c,
 152         0x00919191,0x006e6e6e,0x008d8d8d,0x00767676,
 153         0x00030303,0x002d2d2d,0x00dedede,0x00969696,
 154         0x00262626,0x007d7d7d,0x00c6c6c6,0x005c5c5c,
 155         0x00d3d3d3,0x00f2f2f2,0x004f4f4f,0x00191919,
 156         0x003f3f3f,0x00dcdcdc,0x00797979,0x001d1d1d,
 157         0x00525252,0x00ebebeb,0x00f3f3f3,0x006d6d6d,
 158         0x005e5e5e,0x00fbfbfb,0x00696969,0x00b2b2b2,
 159         0x00f0f0f0,0x00313131,0x000c0c0c,0x00d4d4d4,
 160         0x00cfcfcf,0x008c8c8c,0x00e2e2e2,0x00757575,
 161         0x00a9a9a9,0x004a4a4a,0x00575757,0x00848484,
 162         0x00111111,0x00454545,0x001b1b1b,0x00f5f5f5,
 163         0x00e4e4e4,0x000e0e0e,0x00737373,0x00aaaaaa,
 164         0x00f1f1f1,0x00dddddd,0x00595959,0x00141414,
 165         0x006c6c6c,0x00929292,0x00545454,0x00d0d0d0,
 166         0x00787878,0x00707070,0x00e3e3e3,0x00494949,
 167         0x00808080,0x00505050,0x00a7a7a7,0x00f6f6f6,
 168         0x00777777,0x00939393,0x00868686,0x00838383,
 169         0x002a2a2a,0x00c7c7c7,0x005b5b5b,0x00e9e9e9,
 170         0x00eeeeee,0x008f8f8f,0x00010101,0x003d3d3d,
 171 };
 172
 173 static const u32 camellia_sp3033[256] = {
 174         0x38003838,0x41004141,0x16001616,0x76007676,
 175         0xd900d9d9,0x93009393,0x60006060,0xf200f2f2,
 176         0x72007272,0xc200c2c2,0xab00abab,0x9a009a9a,
 177         0x75007575,0x06000606,0x57005757,0xa000a0a0,
 178         0x91009191,0xf700f7f7,0xb500b5b5,0xc900c9c9,
 179         0xa200a2a2,0x8c008c8c,0xd200d2d2,0x90009090,
 180         0xf600f6f6,0x07000707,0xa700a7a7,0x27002727,
 181         0x8e008e8e,0xb200b2b2,0x49004949,0xde00dede,
 182         0x43004343,0x5c005c5c,0xd700d7d7,0xc700c7c7,
 183         0x3e003e3e,0xf500f5f5,0x8f008f8f,0x67006767,
 184         0x1f001f1f,0x18001818,0x6e006e6e,0xaf00afaf,
 185         0x2f002f2f,0xe200e2e2,0x85008585,0x0d000d0d,
 186         0x53005353,0xf000f0f0,0x9c009c9c,0x65006565,
 187         0xea00eaea,0xa300a3a3,0xae00aeae,0x9e009e9e,
 188         0xec00ecec,0x80008080,0x2d002d2d,0x6b006b6b,
 189         0xa800a8a8,0x2b002b2b,0x36003636,0xa600a6a6,
 190         0xc500c5c5,0x86008686,0x4d004d4d,0x33003333,
 191         0xfd00fdfd,0x66006666,0x58005858,0x96009696,
 192         0x3a003a3a,0x09000909,0x95009595,0x10001010,
 193         0x78007878,0xd800d8d8,0x42004242,0xcc00cccc,
 194         0xef00efef,0x26002626,0xe500e5e5,0x61006161,
 195         0x1a001a1a,0x3f003f3f,0x3b003b3b,0x82008282,
 196         0xb600b6b6,0xdb00dbdb,0xd400d4d4,0x98009898,
 197         0xe800e8e8,0x8b008b8b,0x02000202,0xeb00ebeb,
 198         0x0a000a0a,0x2c002c2c,0x1d001d1d,0xb000b0b0,
 199         0x6f006f6f,0x8d008d8d,0x88008888,0x0e000e0e,
 200         0x19001919,0x87008787,0x4e004e4e,0x0b000b0b,
 201         0xa900a9a9,0x0c000c0c,0x79007979,0x11001111,
 202         0x7f007f7f,0x22002222,0xe700e7e7,0x59005959,
 203         0xe100e1e1,0xda00dada,0x3d003d3d,0xc800c8c8,
 204         0x12001212,0x04000404,0x74007474,0x54005454,
 205         0x30003030,0x7e007e7e,0xb400b4b4,0x28002828,
 206         0x55005555,0x68006868,0x50005050,0xbe00bebe,
 207         0xd000d0d0,0xc400c4c4,0x31003131,0xcb00cbcb,
 208         0x2a002a2a,0xad00adad,0x0f000f0f,0xca00caca,
 209         0x70007070,0xff00ffff,0x32003232,0x69006969,
 210         0x08000808,0x62006262,0x00000000,0x24002424,
 211         0xd100d1d1,0xfb00fbfb,0xba00baba,0xed00eded,
 212         0x45004545,0x81008181,0x73007373,0x6d006d6d,
 213         0x84008484,0x9f009f9f,0xee00eeee,0x4a004a4a,
 214         0xc300c3c3,0x2e002e2e,0xc100c1c1,0x01000101,
 215         0xe600e6e6,0x25002525,0x48004848,0x99009999,
 216         0xb900b9b9,0xb300b3b3,0x7b007b7b,0xf900f9f9,
 217         0xce00cece,0xbf00bfbf,0xdf00dfdf,0x71007171,
 218         0x29002929,0xcd00cdcd,0x6c006c6c,0x13001313,
 219         0x64006464,0x9b009b9b,0x63006363,0x9d009d9d,
 220         0xc000c0c0,0x4b004b4b,0xb700b7b7,0xa500a5a5,
 221         0x89008989,0x5f005f5f,0xb100b1b1,0x17001717,
 222         0xf400f4f4,0xbc00bcbc,0xd300d3d3,0x46004646,
 223         0xcf00cfcf,0x37003737,0x5e005e5e,0x47004747,
 224         0x94009494,0xfa00fafa,0xfc00fcfc,0x5b005b5b,
 225         0x97009797,0xfe00fefe,0x5a005a5a,0xac00acac,
 226         0x3c003c3c,0x4c004c4c,0x03000303,0x35003535,
 227         0xf300f3f3,0x23002323,0xb800b8b8,0x5d005d5d,
 228         0x6a006a6a,0x92009292,0xd500d5d5,0x21002121,
 229         0x44004444,0x51005151,0xc600c6c6,0x7d007d7d,
 230         0x39003939,0x83008383,0xdc00dcdc,0xaa00aaaa,
 231         0x7c007c7c,0x77007777,0x56005656,0x05000505,
 232         0x1b001b1b,0xa400a4a4,0x15001515,0x34003434,
 233         0x1e001e1e,0x1c001c1c,0xf800f8f8,0x52005252,
 234         0x20002020,0x14001414,0xe900e9e9,0xbd00bdbd,
 235         0xdd00dddd,0xe400e4e4,0xa100a1a1,0xe000e0e0,
 236         0x8a008a8a,0xf100f1f1,0xd600d6d6,0x7a007a7a,
 237         0xbb00bbbb,0xe300e3e3,0x40004040,0x4f004f4f,
 238 };
 239
 240 static const u32 camellia_sp4404[256] = {
 241         0x70700070,0x2c2c002c,0xb3b300b3,0xc0c000c0,
 242         0xe4e400e4,0x57570057,0xeaea00ea,0xaeae00ae,
 243         0x23230023,0x6b6b006b,0x45450045,0xa5a500a5,
 244         0xeded00ed,0x4f4f004f,0x1d1d001d,0x92920092,
 245         0x86860086,0xafaf00af,0x7c7c007c,0x1f1f001f,
 246         0x3e3e003e,0xdcdc00dc,0x5e5e005e,0x0b0b000b,
 247         0xa6a600a6,0x39390039,0xd5d500d5,0x5d5d005d,
 248         0xd9d900d9,0x5a5a005a,0x51510051,0x6c6c006c,
 249         0x8b8b008b,0x9a9a009a,0xfbfb00fb,0xb0b000b0,
 250         0x74740074,0x2b2b002b,0xf0f000f0,0x84840084,
 251         0xdfdf00df,0xcbcb00cb,0x34340034,0x76760076,
 252         0x6d6d006d,0xa9a900a9,0xd1d100d1,0x04040004,
 253         0x14140014,0x3a3a003a,0xdede00de,0x11110011,
 254         0x32320032,0x9c9c009c,0x53530053,0xf2f200f2,
 255         0xfefe00fe,0xcfcf00cf,0xc3c300c3,0x7a7a007a,
 256         0x24240024,0xe8e800e8,0x60600060,0x69690069,
 257         0xaaaa00aa,0xa0a000a0,0xa1a100a1,0x62620062,
 258         0x54540054,0x1e1e001e,0xe0e000e0,0x64640064,
 259         0x10100010,0x00000000,0xa3a300a3,0x75750075,
 260         0x8a8a008a,0xe6e600e6,0x09090009,0xdddd00dd,
 261         0x87870087,0x83830083,0xcdcd00cd,0x90900090,
 262         0x73730073,0xf6f600f6,0x9d9d009d,0xbfbf00bf,
 263         0x52520052,0xd8d800d8,0xc8c800c8,0xc6c600c6,
 264         0x81810081,0x6f6f006f,0x13130013,0x63630063,
 265         0xe9e900e9,0xa7a700a7,0x9f9f009f,0xbcbc00bc,
 266         0x29290029,0xf9f900f9,0x2f2f002f,0xb4b400b4,
 267         0x78780078,0x06060006,0xe7e700e7,0x71710071,
 268         0xd4d400d4,0xabab00ab,0x88880088,0x8d8d008d,
 269         0x72720072,0xb9b900b9,0xf8f800f8,0xacac00ac,
 270         0x36360036,0x2a2a002a,0x3c3c003c,0xf1f100f1,
 271         0x40400040,0xd3d300d3,0xbbbb00bb,0x43430043,
 272         0x15150015,0xadad00ad,0x77770077,0x80800080,
 273         0x82820082,0xecec00ec,0x27270027,0xe5e500e5,
 274         0x85850085,0x35350035,0x0c0c000c,0x41410041,
 275         0xefef00ef,0x93930093,0x19190019,0x21210021,
 276         0x0e0e000e,0x4e4e004e,0x65650065,0xbdbd00bd,
 277         0xb8b800b8,0x8f8f008f,0xebeb00eb,0xcece00ce,
 278         0x30300030,0x5f5f005f,0xc5c500c5,0x1a1a001a,
 279         0xe1e100e1,0xcaca00ca,0x47470047,0x3d3d003d,
 280         0x01010001,0xd6d600d6,0x56560056,0x4d4d004d,
 281         0x0d0d000d,0x66660066,0xcccc00cc,0x2d2d002d,
 282         0x12120012,0x20200020,0xb1b100b1,0x99990099,
 283         0x4c4c004c,0xc2c200c2,0x7e7e007e,0x05050005,
 284         0xb7b700b7,0x31310031,0x17170017,0xd7d700d7,
 285         0x58580058,0x61610061,0x1b1b001b,0x1c1c001c,
 286         0x0f0f000f,0x16160016,0x18180018,0x22220022,
 287         0x44440044,0xb2b200b2,0xb5b500b5,0x91910091,
 288         0x08080008,0xa8a800a8,0xfcfc00fc,0x50500050,
 289         0xd0d000d0,0x7d7d007d,0x89890089,0x97970097,
 290         0x5b5b005b,0x95950095,0xffff00ff,0xd2d200d2,
 291         0xc4c400c4,0x48480048,0xf7f700f7,0xdbdb00db,
 292         0x03030003,0xdada00da,0x3f3f003f,0x94940094,
 293         0x5c5c005c,0x02020002,0x4a4a004a,0x33330033,
 294         0x67670067,0xf3f300f3,0x7f7f007f,0xe2e200e2,
 295         0x9b9b009b,0x26260026,0x37370037,0x3b3b003b,
 296         0x96960096,0x4b4b004b,0xbebe00be,0x2e2e002e,
 297         0x79790079,0x8c8c008c,0x6e6e006e,0x8e8e008e,
 298         0xf5f500f5,0xb6b600b6,0xfdfd00fd,0x59590059,
 299         0x98980098,0x6a6a006a,0x46460046,0xbaba00ba,
 300         0x25250025,0x42420042,0xa2a200a2,0xfafa00fa,
 301         0x07070007,0x55550055,0xeeee00ee,0x0a0a000a,
 302         0x49490049,0x68680068,0x38380038,0xa4a400a4,
 303         0x28280028,0x7b7b007b,0xc9c900c9,0xc1c100c1,
 304         0xe3e300e3,0xf4f400f4,0xc7c700c7,0x9e9e009e,
 305 };
 306
 307
 308 #define CAMELLIA_MIN_KEY_SIZE        16
 309 #define CAMELLIA_MAX_KEY_SIZE        32
 310 #define CAMELLIA_BLOCK_SIZE          16
 311 #define CAMELLIA_TABLE_BYTE_LEN     272
 312
 313 /*
 314  * NB: L and R below stand for 'left' and 'right' as in written numbers.
 315  * That is, in (xxxL,xxxR) pair xxxL holds most significant digits,
 316  * _not_ least significant ones!
 317  */
 318
 319
 320 /* key constants */
 321
 322 #define CAMELLIA_SIGMA1L (0xA09E667FL)
 323 #define CAMELLIA_SIGMA1R (0x3BCC908BL)
 324 #define CAMELLIA_SIGMA2L (0xB67AE858L)
 325 #define CAMELLIA_SIGMA2R (0x4CAA73B2L)
 326 #define CAMELLIA_SIGMA3L (0xC6EF372FL)
 327 #define CAMELLIA_SIGMA3R (0xE94F82BEL)
 328 #define CAMELLIA_SIGMA4L (0x54FF53A5L)
 329 #define CAMELLIA_SIGMA4R (0xF1D36F1CL)
 330 #define CAMELLIA_SIGMA5L (0x10E527FAL)
 331 #define CAMELLIA_SIGMA5R (0xDE682D1DL)
 332 #define CAMELLIA_SIGMA6L (0xB05688C2L)
 333 #define CAMELLIA_SIGMA6R (0xB3E6C1FDL)
 334
 335 /*
 336  *  macros
 337  */
 338 #define GETU32(v, pt) \
 339     do { \
 340         /* latest breed of gcc is clever enough to use move */ \
 341         memcpy(&(v), (pt), 4); \
 342         (v) = be32_to_cpu(v); \
 343     } while(0)
 344
 345 /* rotation right shift 1byte */
 346 #define ROR8(x) (((x) >> 8) + ((x) << 24))
 347 /* rotation left shift 1bit */
 348 #define ROL1(x) (((x) << 1) + ((x) >> 31))
 349 /* rotation left shift 1byte */
 350 #define ROL8(x) (((x) << 8) + ((x) >> 24))
 351
 352 #define ROLDQ(ll, lr, rl, rr, w0, w1, bits)             \
 353     do {                                                \
 354         w0 = ll;                                        \
 355         ll = (ll << bits) + (lr >> (32 - bits));        \
 356         lr = (lr << bits) + (rl >> (32 - bits));        \
 357         rl = (rl << bits) + (rr >> (32 - bits));        \
 358         rr = (rr << bits) + (w0 >> (32 - bits));        \
 359     } while(0)
 360
 361 #define ROLDQo32(ll, lr, rl, rr, w0, w1, bits)          \
 362     do {                                                \
 363         w0 = ll;                                        \
 364         w1 = lr;                                        \
 365         ll = (lr << (bits - 32)) + (rl >> (64 - bits)); \
 366         lr = (rl << (bits - 32)) + (rr >> (64 - bits)); \
 367         rl = (rr << (bits - 32)) + (w0 >> (64 - bits)); \
 368         rr = (w0 << (bits - 32)) + (w1 >> (64 - bits)); \
 369     } while(0)
 370
 371 #define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1)      \
 372     do {                                                        \
 373         il = xl ^ kl;                                           \
 374         ir = xr ^ kr;                                           \
 375         t0 = il >> 16;                                          \
 376         t1 = ir >> 16;                                          \
 377         yl = camellia_sp1110[(u8)(ir     )]                     \
 378            ^ camellia_sp0222[    (t1 >> 8)]                     \
 379            ^ camellia_sp3033[(u8)(t1     )]                     \
 380            ^ camellia_sp4404[(u8)(ir >> 8)];                    \
 381         yr = camellia_sp1110[    (t0 >> 8)]                     \
 382            ^ camellia_sp0222[(u8)(t0     )]                     \
 383            ^ camellia_sp3033[(u8)(il >> 8)]                     \
 384            ^ camellia_sp4404[(u8)(il     )];                    \
 385         yl ^= yr;                                               \
 386         yr = ROR8(yr);                                          \
 387         yr ^= yl;                                               \
 388     } while(0)
 389
 390 #define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
 391 #define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
 392
 393 static void camellia_setup_tail(u32 *subkey, int max)
 394 {
 395         u32 dw;
 396         int i = 2;
 397         do {
 398                 dw = SUBKEY_L(i + 0) ^ SUBKEY_R(i + 0); dw = ROL8(dw);/* round 1 */
 399                 SUBKEY_R(i + 0) = SUBKEY_L(i + 0) ^ dw; SUBKEY_L(i + 0) = dw;
 400                 dw = SUBKEY_L(i + 1) ^ SUBKEY_R(i + 1); dw = ROL8(dw);/* round 2 */
 401                 SUBKEY_R(i + 1) = SUBKEY_L(i + 1) ^ dw; SUBKEY_L(i + 1) = dw;
 402                 dw = SUBKEY_L(i + 2) ^ SUBKEY_R(i + 2); dw = ROL8(dw);/* round 3 */
 403                 SUBKEY_R(i + 2) = SUBKEY_L(i + 2) ^ dw; SUBKEY_L(i + 2) = dw;
 404                 dw = SUBKEY_L(i + 3) ^ SUBKEY_R(i + 3); dw = ROL8(dw);/* round 4 */
 405                 SUBKEY_R(i + 3) = SUBKEY_L(i + 3) ^ dw; SUBKEY_L(i + 3) = dw;
 406                 dw = SUBKEY_L(i + 4) ^ SUBKEY_R(i + 4); dw = ROL8(dw);/* round 5 */
 407                 SUBKEY_R(i + 4) = SUBKEY_L(i + 4) ^ dw; SUBKEY_L(i + 4) = dw;
 408                 dw = SUBKEY_L(i + 5) ^ SUBKEY_R(i + 5); dw = ROL8(dw);/* round 6 */
 409                 SUBKEY_R(i + 5) = SUBKEY_L(i + 5) ^ dw; SUBKEY_L(i + 5) = dw;
 410                 i += 8;
 411         } while (i < max);
 412 }
 413
 414 static void camellia_setup128(const unsigned char *key, u32 *subkey)
 415 {
 416         u32 kll, klr, krl, krr;
 417         u32 il, ir, t0, t1, w0, w1;
 418         u32 kw4l, kw4r, dw, tl, tr;
 419         u32 subL[26];
 420         u32 subR[26];
 421
 422         /**
 423          *  k == kll || klr || krl || krr (|| is concatination)
 424          */
 425         GETU32(kll, key     );
 426         GETU32(klr, key +  4);
 427         GETU32(krl, key +  8);
 428         GETU32(krr, key + 12);
 429
 430         /**
 431          * generate KL dependent subkeys
 432          */
 433         /* kw1 */
 434         subL[0] = kll; subR[0] = klr;
 435         /* kw2 */
 436         subL[1] = krl; subR[1] = krr;
 437         /* rotation left shift 15bit */
 438         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 439         /* k3 */
 440         subL[4] = kll; subR[4] = klr;
 441         /* k4 */
 442         subL[5] = krl; subR[5] = krr;
 443         /* rotation left shift 15+30bit */
 444         ROLDQ(kll, klr, krl, krr, w0, w1, 30);
 445         /* k7 */
 446         subL[10] = kll; subR[10] = klr;
 447         /* k8 */
 448         subL[11] = krl; subR[11] = krr;
 449         /* rotation left shift 15+30+15bit */
 450         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 451         /* k10 */
 452         subL[13] = krl; subR[13] = krr;
 453         /* rotation left shift 15+30+15+17 bit */
 454         ROLDQ(kll, klr, krl, krr, w0, w1, 17);
 455         /* kl3 */
 456         subL[16] = kll; subR[16] = klr;
 457         /* kl4 */
 458         subL[17] = krl; subR[17] = krr;
 459         /* rotation left shift 15+30+15+17+17 bit */
 460         ROLDQ(kll, klr, krl, krr, w0, w1, 17);
 461         /* k13 */
 462         subL[18] = kll; subR[18] = klr;
 463         /* k14 */
 464         subL[19] = krl; subR[19] = krr;
 465         /* rotation left shift 15+30+15+17+17+17 bit */
 466         ROLDQ(kll, klr, krl, krr, w0, w1, 17);
 467         /* k17 */
 468         subL[22] = kll; subR[22] = klr;
 469         /* k18 */
 470         subL[23] = krl; subR[23] = krr;
 471
 472         /* generate KA */
 473         kll = subL[0]; klr = subR[0];
 474         krl = subL[1]; krr = subR[1];
 475         CAMELLIA_F(kll, klr,
 476                    CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
 477                    w0, w1, il, ir, t0, t1);
 478         krl ^= w0; krr ^= w1;
 479         CAMELLIA_F(krl, krr,
 480                    CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
 481                    kll, klr, il, ir, t0, t1);
 482         /* current status == (kll, klr, w0, w1) */
 483         CAMELLIA_F(kll, klr,
 484                    CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
 485                    krl, krr, il, ir, t0, t1);
 486         krl ^= w0; krr ^= w1;
 487         CAMELLIA_F(krl, krr,
 488                    CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
 489                    w0, w1, il, ir, t0, t1);
 490         kll ^= w0; klr ^= w1;
 491
 492         /* generate KA dependent subkeys */
 493         /* k1, k2 */
 494         subL[2] = kll; subR[2] = klr;
 495         subL[3] = krl; subR[3] = krr;
 496         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 497         /* k5,k6 */
 498         subL[6] = kll; subR[6] = klr;
 499         subL[7] = krl; subR[7] = krr;
 500         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 501         /* kl1, kl2 */
 502         subL[8] = kll; subR[8] = klr;
 503         subL[9] = krl; subR[9] = krr;
 504         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 505         /* k9 */
 506         subL[12] = kll; subR[12] = klr;
 507         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 508         /* k11, k12 */
 509         subL[14] = kll; subR[14] = klr;
 510         subL[15] = krl; subR[15] = krr;
 511         ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
 512         /* k15, k16 */
 513         subL[20] = kll; subR[20] = klr;
 514         subL[21] = krl; subR[21] = krr;
 515         ROLDQ(kll, klr, krl, krr, w0, w1, 17);
 516         /* kw3, kw4 */
 517         subL[24] = kll; subR[24] = klr;
 518         subL[25] = krl; subR[25] = krr;
 519
 520         /* absorb kw2 to other subkeys */
 521         /* round 2 */
 522         subL[3] ^= subL[1]; subR[3] ^= subR[1];
 523         /* round 4 */
 524         subL[5] ^= subL[1]; subR[5] ^= subR[1];
 525         /* round 6 */
 526         subL[7] ^= subL[1]; subR[7] ^= subR[1];
 527         subL[1] ^= subR[1] & ~subR[9];
 528         dw = subL[1] & subL[9],
 529                 subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */
 530         /* round 8 */
 531         subL[11] ^= subL[1]; subR[11] ^= subR[1];
 532         /* round 10 */
 533         subL[13] ^= subL[1]; subR[13] ^= subR[1];
 534         /* round 12 */
 535         subL[15] ^= subL[1]; subR[15] ^= subR[1];
 536         subL[1] ^= subR[1] & ~subR[17];
 537         dw = subL[1] & subL[17],
 538                 subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */
 539         /* round 14 */
 540         subL[19] ^= subL[1]; subR[19] ^= subR[1];
 541         /* round 16 */
 542         subL[21] ^= subL[1]; subR[21] ^= subR[1];
 543         /* round 18 */
 544         subL[23] ^= subL[1]; subR[23] ^= subR[1];
 545         /* kw3 */
 546         subL[24] ^= subL[1]; subR[24] ^= subR[1];
 547
 548         /* absorb kw4 to other subkeys */
 549         kw4l = subL[25]; kw4r = subR[25];
 550         /* round 17 */
 551         subL[22] ^= kw4l; subR[22] ^= kw4r;
 552         /* round 15 */
 553         subL[20] ^= kw4l; subR[20] ^= kw4r;
 554         /* round 13 */
 555         subL[18] ^= kw4l; subR[18] ^= kw4r;
 556         kw4l ^= kw4r & ~subR[16];
 557         dw = kw4l & subL[16],
 558                 kw4r ^= ROL1(dw); /* modified for FL(kl3) */
 559         /* round 11 */
 560         subL[14] ^= kw4l; subR[14] ^= kw4r;
 561         /* round 9 */
 562         subL[12] ^= kw4l; subR[12] ^= kw4r;
 563         /* round 7 */
 564         subL[10] ^= kw4l; subR[10] ^= kw4r;
 565         kw4l ^= kw4r & ~subR[8];
 566         dw = kw4l & subL[8],
 567                 kw4r ^= ROL1(dw); /* modified for FL(kl1) */
 568         /* round 5 */
 569         subL[6] ^= kw4l; subR[6] ^= kw4r;
 570         /* round 3 */
 571         subL[4] ^= kw4l; subR[4] ^= kw4r;
 572         /* round 1 */
 573         subL[2] ^= kw4l; subR[2] ^= kw4r;
 574         /* kw1 */
 575         subL[0] ^= kw4l; subR[0] ^= kw4r;
 576
 577         /* key XOR is end of F-function */
 578         SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */
 579         SUBKEY_R(0) = subR[0] ^ subR[2];
 580         SUBKEY_L(2) = subL[3];       /* round 1 */
 581         SUBKEY_R(2) = subR[3];
 582         SUBKEY_L(3) = subL[2] ^ subL[4]; /* round 2 */
 583         SUBKEY_R(3) = subR[2] ^ subR[4];
 584         SUBKEY_L(4) = subL[3] ^ subL[5]; /* round 3 */
 585         SUBKEY_R(4) = subR[3] ^ subR[5];
 586         SUBKEY_L(5) = subL[4] ^ subL[6]; /* round 4 */
 587         SUBKEY_R(5) = subR[4] ^ subR[6];
 588         SUBKEY_L(6) = subL[5] ^ subL[7]; /* round 5 */
 589         SUBKEY_R(6) = subR[5] ^ subR[7];
 590         tl = subL[10] ^ (subR[10] & ~subR[8]);
 591         dw = tl & subL[8],  /* FL(kl1) */
 592                 tr = subR[10] ^ ROL1(dw);
 593         SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
 594         SUBKEY_R(7) = subR[6] ^ tr;
 595         SUBKEY_L(8) = subL[8];       /* FL(kl1) */
 596         SUBKEY_R(8) = subR[8];
 597         SUBKEY_L(9) = subL[9];       /* FLinv(kl2) */
 598         SUBKEY_R(9) = subR[9];
 599         tl = subL[7] ^ (subR[7] & ~subR[9]);
 600         dw = tl & subL[9],  /* FLinv(kl2) */
 601                 tr = subR[7] ^ ROL1(dw);
 602         SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
 603         SUBKEY_R(10) = tr ^ subR[11];
 604         SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
 605         SUBKEY_R(11) = subR[10] ^ subR[12];
 606         SUBKEY_L(12) = subL[11] ^ subL[13]; /* round 9 */
 607         SUBKEY_R(12) = subR[11] ^ subR[13];
 608         SUBKEY_L(13) = subL[12] ^ subL[14]; /* round 10 */
 609         SUBKEY_R(13) = subR[12] ^ subR[14];
 610         SUBKEY_L(14) = subL[13] ^ subL[15]; /* round 11 */
 611         SUBKEY_R(14) = subR[13] ^ subR[15];
 612         tl = subL[18] ^ (subR[18] & ~subR[16]);
 613         dw = tl & subL[16], /* FL(kl3) */
 614                 tr = subR[18] ^ ROL1(dw);
 615         SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
 616         SUBKEY_R(15) = subR[14] ^ tr;
 617         SUBKEY_L(16) = subL[16];     /* FL(kl3) */
 618         SUBKEY_R(16) = subR[16];
 619         SUBKEY_L(17) = subL[17];     /* FLinv(kl4) */
 620         SUBKEY_R(17) = subR[17];
 621         tl = subL[15] ^ (subR[15] & ~subR[17]);
 622         dw = tl & subL[17], /* FLinv(kl4) */
 623                 tr = subR[15] ^ ROL1(dw);
 624         SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
 625         SUBKEY_R(18) = tr ^ subR[19];
 626         SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
 627         SUBKEY_R(19) = subR[18] ^ subR[20];
 628         SUBKEY_L(20) = subL[19] ^ subL[21]; /* round 15 */
 629         SUBKEY_R(20) = subR[19] ^ subR[21];
 630         SUBKEY_L(21) = subL[20] ^ subL[22]; /* round 16 */
 631         SUBKEY_R(21) = subR[20] ^ subR[22];
 632         SUBKEY_L(22) = subL[21] ^ subL[23]; /* round 17 */
 633         SUBKEY_R(22) = subR[21] ^ subR[23];
 634         SUBKEY_L(23) = subL[22];     /* round 18 */
 635         SUBKEY_R(23) = subR[22];
 636         SUBKEY_L(24) = subL[24] ^ subL[23]; /* kw3 */
 637         SUBKEY_R(24) = subR[24] ^ subR[23];
 638
 639         /* apply the inverse of the last half of P-function */
 640         camellia_setup_tail(subkey, 24);
 641 }
 642
 643 static 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 kw4l, kw4r, dw, tl, tr;
 649         u32 subL[34];
 650         u32 subR[34];
 651
 652         /**
 653          *  key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
 654          *  (|| is concatination)
 655          */
 656         GETU32(kll,  key     );
 657         GETU32(klr,  key +  4);
 658         GETU32(krl,  key +  8);
 659         GETU32(krr,  key + 12);
 660         GETU32(krll, key + 16);
 661         GETU32(krlr, key + 20);
 662         GETU32(krrl, key + 24);
 663         GETU32(krrr, key + 28);
 664
 665         /* generate KL dependent subkeys */
 666         /* kw1 */
 667         subL[0] = kll; subR[0] = klr;
 668         /* kw2 */
 669         subL[1] = krl; subR[1] = krr;
 670         ROLDQo32(kll, klr, krl, krr, w0, w1, 45);
 671         /* k9 */
 672         subL[12] = kll; subR[12] = klr;
 673         /* k10 */
 674         subL[13] = krl; subR[13] = krr;
 675         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 676         /* kl3 */
 677         subL[16] = kll; subR[16] = klr;
 678         /* kl4 */
 679         subL[17] = krl; subR[17] = krr;
 680         ROLDQ(kll, klr, krl, krr, w0, w1, 17);
 681         /* k17 */
 682         subL[22] = kll; subR[22] = klr;
 683         /* k18 */
 684         subL[23] = krl; subR[23] = krr;
 685         ROLDQo32(kll, klr, krl, krr, w0, w1, 34);
 686         /* k23 */
 687         subL[30] = kll; subR[30] = klr;
 688         /* k24 */
 689         subL[31] = krl; subR[31] = krr;
 690
 691         /* generate KR dependent subkeys */
 692         ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
 693         /* k3 */
 694         subL[4] = krll; subR[4] = krlr;
 695         /* k4 */
 696         subL[5] = krrl; subR[5] = krrr;
 697         ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);
 698         /* kl1 */
 699         subL[8] = krll; subR[8] = krlr;
 700         /* kl2 */
 701         subL[9] = krrl; subR[9] = krrr;
 702         ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
 703         /* k13 */
 704         subL[18] = krll; subR[18] = krlr;
 705         /* k14 */
 706         subL[19] = krrl; subR[19] = krrr;
 707         ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
 708         /* k19 */
 709         subL[26] = krll; subR[26] = krlr;
 710         /* k20 */
 711         subL[27] = krrl; subR[27] = krrr;
 712         ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);
 713
 714         /* generate KA */
 715         kll = subL[0] ^ krll; klr = subR[0] ^ krlr;
 716         krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;
 717         CAMELLIA_F(kll, klr,
 718                    CAMELLIA_SIGMA1L, CAMELLIA_SIGMA1R,
 719                    w0, w1, il, ir, t0, t1);
 720         krl ^= w0; krr ^= w1;
 721         CAMELLIA_F(krl, krr,
 722                    CAMELLIA_SIGMA2L, CAMELLIA_SIGMA2R,
 723                    kll, klr, il, ir, t0, t1);
 724         kll ^= krll; klr ^= krlr;
 725         CAMELLIA_F(kll, klr,
 726                    CAMELLIA_SIGMA3L, CAMELLIA_SIGMA3R,
 727                    krl, krr, il, ir, t0, t1);
 728         krl ^= w0 ^ krrl; krr ^= w1 ^ krrr;
 729         CAMELLIA_F(krl, krr,
 730                    CAMELLIA_SIGMA4L, CAMELLIA_SIGMA4R,
 731                    w0, w1, il, ir, t0, t1);
 732         kll ^= w0; klr ^= w1;
 733
 734         /* generate KB */
 735         krll ^= kll; krlr ^= klr;
 736         krrl ^= krl; krrr ^= krr;
 737         CAMELLIA_F(krll, krlr,
 738                    CAMELLIA_SIGMA5L, CAMELLIA_SIGMA5R,
 739                    w0, w1, il, ir, t0, t1);
 740         krrl ^= w0; krrr ^= w1;
 741         CAMELLIA_F(krrl, krrr,
 742                    CAMELLIA_SIGMA6L, CAMELLIA_SIGMA6R,
 743                    w0, w1, il, ir, t0, t1);
 744         krll ^= w0; krlr ^= w1;
 745
 746         /* generate KA dependent subkeys */
 747         ROLDQ(kll, klr, krl, krr, w0, w1, 15);
 748         /* k5 */
 749         subL[6] = kll; subR[6] = klr;
 750         /* k6 */
 751         subL[7] = krl; subR[7] = krr;
 752         ROLDQ(kll, klr, krl, krr, w0, w1, 30);
 753         /* k11 */
 754         subL[14] = kll; subR[14] = klr;
 755         /* k12 */
 756         subL[15] = krl; subR[15] = krr;
 757         /* rotation left shift 32bit */
 758         /* kl5 */
 759         subL[24] = klr; subR[24] = krl;
 760         /* kl6 */
 761         subL[25] = krr; subR[25] = kll;
 762         /* rotation left shift 49 from k11,k12 -> k21,k22 */
 763         ROLDQo32(kll, klr, krl, krr, w0, w1, 49);
 764         /* k21 */
 765         subL[28] = kll; subR[28] = klr;
 766         /* k22 */
 767         subL[29] = krl; subR[29] = krr;
 768
 769         /* generate KB dependent subkeys */
 770         /* k1 */
 771         subL[2] = krll; subR[2] = krlr;
 772         /* k2 */
 773         subL[3] = krrl; subR[3] = krrr;
 774         ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
 775         /* k7 */
 776         subL[10] = krll; subR[10] = krlr;
 777         /* k8 */
 778         subL[11] = krrl; subR[11] = krrr;
 779         ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);
 780         /* k15 */
 781         subL[20] = krll; subR[20] = krlr;
 782         /* k16 */
 783         subL[21] = krrl; subR[21] = krrr;
 784         ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 51);
 785         /* kw3 */
 786         subL[32] = krll; subR[32] = krlr;
 787         /* kw4 */
 788         subL[33] = krrl; subR[33] = krrr;
 789
 790         /* absorb kw2 to other subkeys */
 791         /* round 2 */
 792         subL[3] ^= subL[1]; subR[3] ^= subR[1];
 793         /* round 4 */
 794         subL[5] ^= subL[1]; subR[5] ^= subR[1];
 795         /* round 6 */
 796         subL[7] ^= subL[1]; subR[7] ^= subR[1];
 797         subL[1] ^= subR[1] & ~subR[9];
 798         dw = subL[1] & subL[9],
 799                 subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */
 800         /* round 8 */
 801         subL[11] ^= subL[1]; subR[11] ^= subR[1];
 802         /* round 10 */
 803         subL[13] ^= subL[1]; subR[13] ^= subR[1];
 804         /* round 12 */
 805         subL[15] ^= subL[1]; subR[15] ^= subR[1];
 806         subL[1] ^= subR[1] & ~subR[17];
 807         dw = subL[1] & subL[17],
 808                 subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */
 809         /* round 14 */
 810         subL[19] ^= subL[1]; subR[19] ^= subR[1];
 811         /* round 16 */
 812         subL[21] ^= subL[1]; subR[21] ^= subR[1];
 813         /* round 18 */
 814         subL[23] ^= subL[1]; subR[23] ^= subR[1];
 815         subL[1] ^= subR[1] & ~subR[25];
 816         dw = subL[1] & subL[25],
 817                 subR[1] ^= ROL1(dw); /* modified for FLinv(kl6) */
 818         /* round 20 */
 819         subL[27] ^= subL[1]; subR[27] ^= subR[1];
 820         /* round 22 */
 821         subL[29] ^= subL[1]; subR[29] ^= subR[1];
 822         /* round 24 */
 823         subL[31] ^= subL[1]; subR[31] ^= subR[1];
 824         /* kw3 */
 825         subL[32] ^= subL[1]; subR[32] ^= subR[1];
 826
 827         /* absorb kw4 to other subkeys */
 828         kw4l = subL[33]; kw4r = subR[33];
 829         /* round 23 */
 830         subL[30] ^= kw4l; subR[30] ^= kw4r;
 831         /* round 21 */
 832         subL[28] ^= kw4l; subR[28] ^= kw4r;
 833         /* round 19 */
 834         subL[26] ^= kw4l; subR[26] ^= kw4r;
 835         kw4l ^= kw4r & ~subR[24];
 836         dw = kw4l & subL[24],
 837                 kw4r ^= ROL1(dw); /* modified for FL(kl5) */
 838         /* round 17 */
 839         subL[22] ^= kw4l; subR[22] ^= kw4r;
 840         /* round 15 */
 841         subL[20] ^= kw4l; subR[20] ^= kw4r;
 842         /* round 13 */
 843         subL[18] ^= kw4l; subR[18] ^= kw4r;
 844         kw4l ^= kw4r & ~subR[16];
 845         dw = kw4l & subL[16],
 846                 kw4r ^= ROL1(dw); /* modified for FL(kl3) */
 847         /* round 11 */
 848         subL[14] ^= kw4l; subR[14] ^= kw4r;
 849         /* round 9 */
 850         subL[12] ^= kw4l; subR[12] ^= kw4r;
 851         /* round 7 */
 852         subL[10] ^= kw4l; subR[10] ^= kw4r;
 853         kw4l ^= kw4r & ~subR[8];
 854         dw = kw4l & subL[8],
 855                 kw4r ^= ROL1(dw); /* modified for FL(kl1) */
 856         /* round 5 */
 857         subL[6] ^= kw4l; subR[6] ^= kw4r;
 858         /* round 3 */
 859         subL[4] ^= kw4l; subR[4] ^= kw4r;
 860         /* round 1 */
 861         subL[2] ^= kw4l; subR[2] ^= kw4r;
 862         /* kw1 */
 863         subL[0] ^= kw4l; subR[0] ^= kw4r;
 864
 865         /* key XOR is end of F-function */
 866         SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */
 867         SUBKEY_R(0) = subR[0] ^ subR[2];
 868         SUBKEY_L(2) = subL[3];       /* round 1 */
 869         SUBKEY_R(2) = subR[3];
 870         SUBKEY_L(3) = subL[2] ^ subL[4]; /* round 2 */
 871         SUBKEY_R(3) = subR[2] ^ subR[4];
 872         SUBKEY_L(4) = subL[3] ^ subL[5]; /* round 3 */
 873         SUBKEY_R(4) = subR[3] ^ subR[5];
 874         SUBKEY_L(5) = subL[4] ^ subL[6]; /* round 4 */
 875         SUBKEY_R(5) = subR[4] ^ subR[6];
 876         SUBKEY_L(6) = subL[5] ^ subL[7]; /* round 5 */
 877         SUBKEY_R(6) = subR[5] ^ subR[7];
 878         tl = subL[10] ^ (subR[10] & ~subR[8]);
 879         dw = tl & subL[8],  /* FL(kl1) */
 880                 tr = subR[10] ^ ROL1(dw);
 881         SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
 882         SUBKEY_R(7) = subR[6] ^ tr;
 883         SUBKEY_L(8) = subL[8];       /* FL(kl1) */
 884         SUBKEY_R(8) = subR[8];
 885         SUBKEY_L(9) = subL[9];       /* FLinv(kl2) */
 886         SUBKEY_R(9) = subR[9];
 887         tl = subL[7] ^ (subR[7] & ~subR[9]);
 888         dw = tl & subL[9],  /* FLinv(kl2) */
 889                 tr = subR[7] ^ ROL1(dw);
 890         SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
 891         SUBKEY_R(10) = tr ^ subR[11];
 892         SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
 893         SUBKEY_R(11) = subR[10] ^ subR[12];
 894         SUBKEY_L(12) = subL[11] ^ subL[13]; /* round 9 */
 895         SUBKEY_R(12) = subR[11] ^ subR[13];
 896         SUBKEY_L(13) = subL[12] ^ subL[14]; /* round 10 */
 897         SUBKEY_R(13) = subR[12] ^ subR[14];
 898         SUBKEY_L(14) = subL[13] ^ subL[15]; /* round 11 */
 899         SUBKEY_R(14) = subR[13] ^ subR[15];
 900         tl = subL[18] ^ (subR[18] & ~subR[16]);
 901         dw = tl & subL[16], /* FL(kl3) */
 902                 tr = subR[18] ^ ROL1(dw);
 903         SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
 904         SUBKEY_R(15) = subR[14] ^ tr;
 905         SUBKEY_L(16) = subL[16];     /* FL(kl3) */
 906         SUBKEY_R(16) = subR[16];
 907         SUBKEY_L(17) = subL[17];     /* FLinv(kl4) */
 908         SUBKEY_R(17) = subR[17];
 909         tl = subL[15] ^ (subR[15] & ~subR[17]);
 910         dw = tl & subL[17], /* FLinv(kl4) */
 911                 tr = subR[15] ^ ROL1(dw);
 912         SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
 913         SUBKEY_R(18) = tr ^ subR[19];
 914         SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
 915         SUBKEY_R(19) = subR[18] ^ subR[20];
 916         SUBKEY_L(20) = subL[19] ^ subL[21]; /* round 15 */
 917         SUBKEY_R(20) = subR[19] ^ subR[21];
 918         SUBKEY_L(21) = subL[20] ^ subL[22]; /* round 16 */
 919         SUBKEY_R(21) = subR[20] ^ subR[22];
 920         SUBKEY_L(22) = subL[21] ^ subL[23]; /* round 17 */
 921         SUBKEY_R(22) = subR[21] ^ subR[23];
 922         tl = subL[26] ^ (subR[26] & ~subR[24]);
 923         dw = tl & subL[24], /* FL(kl5) */
 924                 tr = subR[26] ^ ROL1(dw);
 925         SUBKEY_L(23) = subL[22] ^ tl; /* round 18 */
 926         SUBKEY_R(23) = subR[22] ^ tr;
 927         SUBKEY_L(24) = subL[24];     /* FL(kl5) */
 928         SUBKEY_R(24) = subR[24];
 929         SUBKEY_L(25) = subL[25];     /* FLinv(kl6) */
 930         SUBKEY_R(25) = subR[25];
 931         tl = subL[23] ^ (subR[23] & ~subR[25]);
 932         dw = tl & subL[25], /* FLinv(kl6) */
 933                 tr = subR[23] ^ ROL1(dw);
 934         SUBKEY_L(26) = tl ^ subL[27]; /* round 19 */
 935         SUBKEY_R(26) = tr ^ subR[27];
 936         SUBKEY_L(27) = subL[26] ^ subL[28]; /* round 20 */
 937         SUBKEY_R(27) = subR[26] ^ subR[28];
 938         SUBKEY_L(28) = subL[27] ^ subL[29]; /* round 21 */
 939         SUBKEY_R(28) = subR[27] ^ subR[29];
 940         SUBKEY_L(29) = subL[28] ^ subL[30]; /* round 22 */
 941         SUBKEY_R(29) = subR[28] ^ subR[30];
 942         SUBKEY_L(30) = subL[29] ^ subL[31]; /* round 23 */
 943         SUBKEY_R(30) = subR[29] ^ subR[31];
 944         SUBKEY_L(31) = subL[30];     /* round 24 */
 945         SUBKEY_R(31) = subR[30];
 946         SUBKEY_L(32) = subL[32] ^ subL[31]; /* kw3 */
 947         SUBKEY_R(32) = subR[32] ^ subR[31];
 948
 949         /* apply the inverse of the last half of P-function */
 950         camellia_setup_tail(subkey, 32);
 951 }
 952
 953 static void camellia_setup192(const unsigned char *key, u32 *subkey)
 954 {
 955         unsigned char kk[32];
 956         u32 krll, krlr, krrl,krrr;
 957
 958         memcpy(kk, key, 24);
 959         memcpy((unsigned char *)&krll, key+16, 4);
 960         memcpy((unsigned char *)&krlr, key+20, 4);
 961         krrl = ~krll;
 962         krrr = ~krlr;
 963         memcpy(kk+24, (unsigned char *)&krrl, 4);
 964         memcpy(kk+28, (unsigned char *)&krrr, 4);
 965         camellia_setup256(kk, subkey);
 966 }
 967
 968
 969 /*
 970  * Encrypt/decrypt
 971  */
 972 #define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) \
 973     do {                                                                \
 974         t0 = kll;                                                       \
 975         t2 = krr;                                                       \
 976         t0 &= ll;                                                       \
 977         t2 |= rr;                                                       \
 978         rl ^= t2;                                                       \
 979         lr ^= ROL1(t0);                                                 \
 980         t3 = krl;                                                       \
 981         t1 = klr;                                                       \
 982         t3 &= rl;                                                       \
 983         t1 |= lr;                                                       \
 984         ll ^= t1;                                                       \
 985         rr ^= ROL1(t3);                                                 \
 986     } while(0)
 987
 988 #define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir)                \
 989     do {                                                                \
 990         ir =  camellia_sp1110[(u8)xr];                                  \
 991         il =  camellia_sp1110[    (xl >> 24)];                          \
 992         ir ^= camellia_sp0222[    (xr >> 24)];                          \
 993         il ^= camellia_sp0222[(u8)(xl >> 16)];                          \
 994         ir ^= camellia_sp3033[(u8)(xr >> 16)];                          \
 995         il ^= camellia_sp3033[(u8)(xl >> 8)];                           \
 996         ir ^= camellia_sp4404[(u8)(xr >> 8)];                           \
 997         il ^= camellia_sp4404[(u8)xl];                                  \
 998         il ^= kl;                                                       \
 999         ir ^= il ^ kr;                                                  \
1000         yl ^= ir;                                                       \
1001         yr ^= ROR8(il) ^ ir;                                            \
1002     } while(0)
1003
1004 /* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
1005 static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
1006 {
1007         u32 il,ir,t0,t1;               /* temporary variables */
1008
1009         /* pre whitening but absorb kw2 */
1010         io[0] ^= SUBKEY_L(0);
1011         io[1] ^= SUBKEY_R(0);
1012
1013         /* main iteration */
1014 #define ROUNDS(i) do { \
1015         CAMELLIA_ROUNDSM(io[0],io[1], \
1016                          SUBKEY_L(i + 2),SUBKEY_R(i + 2), \
1017                          io[2],io[3],il,ir); \
1018         CAMELLIA_ROUNDSM(io[2],io[3], \
1019                          SUBKEY_L(i + 3),SUBKEY_R(i + 3), \
1020                          io[0],io[1],il,ir); \
1021         CAMELLIA_ROUNDSM(io[0],io[1], \
1022                          SUBKEY_L(i + 4),SUBKEY_R(i + 4), \
1023                          io[2],io[3],il,ir); \
1024         CAMELLIA_ROUNDSM(io[2],io[3], \
1025                          SUBKEY_L(i + 5),SUBKEY_R(i + 5), \
1026                          io[0],io[1],il,ir); \
1027         CAMELLIA_ROUNDSM(io[0],io[1], \
1028                          SUBKEY_L(i + 6),SUBKEY_R(i + 6), \
1029                          io[2],io[3],il,ir); \
1030         CAMELLIA_ROUNDSM(io[2],io[3], \
1031                          SUBKEY_L(i + 7),SUBKEY_R(i + 7), \
1032                          io[0],io[1],il,ir); \
1033 } while (0)
1034 #define FLS(i) do { \
1035         CAMELLIA_FLS(io[0],io[1],io[2],io[3], \
1036                      SUBKEY_L(i + 0),SUBKEY_R(i + 0), \
1037                      SUBKEY_L(i + 1),SUBKEY_R(i + 1), \
1038                      t0,t1,il,ir); \
1039 } while (0)
1040
1041         ROUNDS(0);
1042         FLS(8);
1043         ROUNDS(8);
1044         FLS(16);
1045         ROUNDS(16);
1046         if (max == 32) {
1047                 FLS(24);
1048                 ROUNDS(24);
1049         }
1050
1051 #undef ROUNDS
1052 #undef FLS
1053
1054         /* post whitening but kw4 */
1055         io[2] ^= SUBKEY_L(max);
1056         io[3] ^= SUBKEY_R(max);
1057         /* NB: io[0],[1] should be swapped with [2],[3] by caller! */
1058 }
1059
1060 static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
1061 {
1062         u32 il,ir,t0,t1;               /* temporary variables */
1063
1064         /* pre whitening but absorb kw2 */
1065         io[0] ^= SUBKEY_L(i);
1066         io[1] ^= SUBKEY_R(i);
1067
1068         /* main iteration */
1069 #define ROUNDS(i) do { \
1070         CAMELLIA_ROUNDSM(io[0],io[1], \
1071                          SUBKEY_L(i + 7),SUBKEY_R(i + 7), \
1072                          io[2],io[3],il,ir); \
1073         CAMELLIA_ROUNDSM(io[2],io[3], \
1074                          SUBKEY_L(i + 6),SUBKEY_R(i + 6), \
1075                          io[0],io[1],il,ir); \
1076         CAMELLIA_ROUNDSM(io[0],io[1], \
1077                          SUBKEY_L(i + 5),SUBKEY_R(i + 5), \
1078                          io[2],io[3],il,ir); \
1079         CAMELLIA_ROUNDSM(io[2],io[3], \
1080                          SUBKEY_L(i + 4),SUBKEY_R(i + 4), \
1081                          io[0],io[1],il,ir); \
1082         CAMELLIA_ROUNDSM(io[0],io[1], \
1083                          SUBKEY_L(i + 3),SUBKEY_R(i + 3), \
1084                          io[2],io[3],il,ir); \
1085         CAMELLIA_ROUNDSM(io[2],io[3], \
1086                          SUBKEY_L(i + 2),SUBKEY_R(i + 2), \
1087                          io[0],io[1],il,ir); \
1088 } while (0)
1089 #define FLS(i) do { \
1090         CAMELLIA_FLS(io[0],io[1],io[2],io[3], \
1091                      SUBKEY_L(i + 1),SUBKEY_R(i + 1), \
1092                      SUBKEY_L(i + 0),SUBKEY_R(i + 0), \
1093                      t0,t1,il,ir); \
1094 } while (0)
1095
1096         if (i == 32) {
1097                 ROUNDS(24);
1098                 FLS(24);
1099         }
1100         ROUNDS(16);
1101         FLS(16);
1102         ROUNDS(8);
1103         FLS(8);
1104         ROUNDS(0);
1105
1106 #undef ROUNDS
1107 #undef FLS
1108
1109         /* post whitening but kw4 */
1110         io[2] ^= SUBKEY_L(0);
1111         io[3] ^= SUBKEY_R(0);
1112         /* NB: 0,1 should be swapped with 2,3 by caller! */
1113 }
1114
1115
1116 struct camellia_ctx {
1117         int key_length;
1118         u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];
1119 };
1120
1121 static int
1122 camellia_set_key(struct crypto_tfm *tfm, const u8 *in_key,
1123                  unsigned int key_len)
1124 {
1125         struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1126         const unsigned char *key = (const unsigned char *)in_key;
1127         u32 *flags = &tfm->crt_flags;
1128
1129         if (key_len != 16 && key_len != 24 && key_len != 32) {
1130                 *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
1131                 return -EINVAL;
1132         }
1133
1134         cctx->key_length = key_len;
1135
1136         switch (key_len) {
1137         case 16:
1138                 camellia_setup128(key, cctx->key_table);
1139                 break;
1140         case 24:
1141                 camellia_setup192(key, cctx->key_table);
1142                 break;
1143         case 32:
1144                 camellia_setup256(key, cctx->key_table);
1145                 break;
1146         }
1147
1148         return 0;
1149 }
1150
1151 static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
1152 {
1153         const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1154         const __be32 *src = (const __be32 *)in;
1155         __be32 *dst = (__be32 *)out;
1156
1157         u32 tmp[4];
1158
1159         tmp[0] = be32_to_cpu(src[0]);
1160         tmp[1] = be32_to_cpu(src[1]);
1161         tmp[2] = be32_to_cpu(src[2]);
1162         tmp[3] = be32_to_cpu(src[3]);
1163
1164         camellia_do_encrypt(cctx->key_table, tmp,
1165                 cctx->key_length == 16 ? 24 : 32 /* for key lengths of 24 and 32 */
1166         );
1167
1168         /* do_encrypt returns 0,1 swapped with 2,3 */
1169         dst[0] = cpu_to_be32(tmp[2]);
1170         dst[1] = cpu_to_be32(tmp[3]);
1171         dst[2] = cpu_to_be32(tmp[0]);
1172         dst[3] = cpu_to_be32(tmp[1]);
1173 }
1174
1175 static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
1176 {
1177         const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
1178         const __be32 *src = (const __be32 *)in;
1179         __be32 *dst = (__be32 *)out;
1180
1181         u32 tmp[4];
1182
1183         tmp[0] = be32_to_cpu(src[0]);
1184         tmp[1] = be32_to_cpu(src[1]);
1185         tmp[2] = be32_to_cpu(src[2]);
1186         tmp[3] = be32_to_cpu(src[3]);
1187
1188         camellia_do_decrypt(cctx->key_table, tmp,
1189                 cctx->key_length == 16 ? 24 : 32 /* for key lengths of 24 and 32 */
1190         );
1191
1192         /* do_decrypt returns 0,1 swapped with 2,3 */
1193         dst[0] = cpu_to_be32(tmp[2]);
1194         dst[1] = cpu_to_be32(tmp[3]);
1195         dst[2] = cpu_to_be32(tmp[0]);
1196         dst[3] = cpu_to_be32(tmp[1]);
1197 }
1198
1199 static struct crypto_alg camellia_alg = {
1200         .cra_name               =       "camellia",
1201         .cra_driver_name        =       "camellia-generic",
1202         .cra_priority           =       100,
1203         .cra_flags              =       CRYPTO_ALG_TYPE_CIPHER,
1204         .cra_blocksize          =       CAMELLIA_BLOCK_SIZE,
1205         .cra_ctxsize            =       sizeof(struct camellia_ctx),
1206         .cra_alignmask          =       3,
1207         .cra_module             =       THIS_MODULE,
1208         .cra_list               =       LIST_HEAD_INIT(camellia_alg.cra_list),
1209         .cra_u                  =       {
1210                 .cipher = {
1211                         .cia_min_keysize        =       CAMELLIA_MIN_KEY_SIZE,
1212                         .cia_max_keysize        =       CAMELLIA_MAX_KEY_SIZE,
1213                         .cia_setkey             =       camellia_set_key,
1214                         .cia_encrypt            =       camellia_encrypt,
1215                         .cia_decrypt            =       camellia_decrypt
1216                 }
1217         }
1218 };
1219
1220 static int __init camellia_init(void)
1221 {
1222         return crypto_register_alg(&camellia_alg);
1223 }
1224
1225 static void __exit camellia_fini(void)
1226 {
1227         crypto_unregister_alg(&camellia_alg);
1228 }
1229
1230 module_init(camellia_init);
1231 module_exit(camellia_fini);
1232
1233 MODULE_DESCRIPTION("Camellia Cipher Algorithm");
1234 MODULE_LICENSE("GPL");