linux/crypto/camellia_generic.c at multikernel-riscv · multikernel/linux · GitHub

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// SPDX-License-Identifier: GPL-2.0-or-later

* NTT (Nippon Telegraph and Telephone Corporation).

* Algorithm Specification

* https://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html

#include <crypto/algapi.h>

#include <linux/errno.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/bitops.h>

#include <linux/unaligned.h>

static const u32 camellia_sp1110[256] = {

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,

};

static const u32 camellia_sp0222[256] = {

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,

};

static const u32 camellia_sp3033[256] = {

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,

};

static const u32 camellia_sp4404[256] = {

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,

};

#define CAMELLIA_MIN_KEY_SIZE 16

#define CAMELLIA_MAX_KEY_SIZE 32

#define CAMELLIA_BLOCK_SIZE 16

#define CAMELLIA_TABLE_BYTE_LEN 272

* 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!

/* 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

#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({ \

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)); \

})

#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({ \

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)); \

})

#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({ \

il = xl ^ kl; \

ir = xr ^ kr; \

t0 = il >> 16; \

t1 = ir >> 16; \

yl = camellia_sp1110[(u8)(ir)] \

^ camellia_sp0222[(u8)(t1 >> 8)] \

^ camellia_sp3033[(u8)(t1)] \

^ camellia_sp4404[(u8)(ir >> 8)]; \

yr = camellia_sp1110[(u8)(t0 >> 8)] \

^ camellia_sp0222[(u8)(t0)] \

^ camellia_sp3033[(u8)(il >> 8)] \

^ camellia_sp4404[(u8)(il)]; \

yl ^= yr; \

yr = ror32(yr, 8); \

yr ^= yl; \

})

#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])

#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])

static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)

{

u32 dw, tl, tr;

u32 kw4l, kw4r;

/* 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];

dw = subL[1] & subL[9];

subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */

/* 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];

dw = subL[1] & subL[17];

subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */

/* 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];

dw = subL[1] & subL[25];

subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */

/* 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];

dw = kw4l & subL[24];

kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */

}

/* 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];

dw = kw4l & subL[16];

kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */

/* 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];

dw = kw4l & subL[8];

kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */

/* 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;

/* 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]);

dw = tl & subL[8]; /* FL(kl1) */

tr = subR[10] ^ rol32(dw, 1);

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]);

dw = tl & subL[9]; /* FLinv(kl2) */

tr = subR[7] ^ rol32(dw, 1);

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]);

dw = tl & subL[16]; /* FL(kl3) */

tr = subR[18] ^ rol32(dw, 1);

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]);

dw = tl & subL[17]; /* FLinv(kl4) */

tr = subR[15] ^ rol32(dw, 1);

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]);

dw = tl & subL[24]; /* FL(kl5) */

tr = subR[26] ^ rol32(dw, 1);

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]);

dw = tl & subL[25]; /* FLinv(kl6) */

tr = subR[23] ^ rol32(dw, 1);

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];

}

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];

/**

* k == kll || klr || krl || krr (|| is concatenation)

kll = get_unaligned_be32(key);

klr = get_unaligned_be32(key + 4);

krl = get_unaligned_be32(key + 8);

krr = get_unaligned_be32(key + 12);

/* generate KL dependent subkeys */

/* kw1 */

subL[0] = kll; subR[0] = klr;

/* kw2 */

subL[1] = krl; subR[1] = krr;

/* rotation left shift 15bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k3 */

subL[4] = kll; subR[4] = klr;

/* k4 */

subL[5] = krl; subR[5] = krr;

/* rotation left shift 15+30bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 30);

/* k7 */

subL[10] = kll; subR[10] = klr;

/* k8 */

subL[11] = krl; subR[11] = krr;

/* rotation left shift 15+30+15bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k10 */

subL[13] = krl; subR[13] = krr;

/* rotation left shift 15+30+15+17 bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 17);

/* kl3 */

subL[16] = kll; subR[16] = klr;

/* kl4 */

subL[17] = krl; subR[17] = krr;

/* rotation left shift 15+30+15+17+17 bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 17);

/* k13 */

subL[18] = kll; subR[18] = klr;

/* k14 */

subL[19] = krl; subR[19] = krr;

/* rotation left shift 15+30+15+17+17+17 bit */

ROLDQ(kll, klr, krl, krr, w0, w1, 17);

/* k17 */

subL[22] = kll; subR[22] = klr;

/* k18 */

subL[23] = krl; subR[23] = krr;

/* generate KA */

kll = subL[0]; klr = subR[0];

krl = subL[1]; krr = subR[1];

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 */

subL[2] = kll; subR[2] = klr;

subL[3] = krl; subR[3] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k5,k6 */

subL[6] = kll; subR[6] = klr;

subL[7] = krl; subR[7] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* kl1, kl2 */

subL[8] = kll; subR[8] = klr;

subL[9] = krl; subR[9] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k9 */

subL[12] = kll; subR[12] = klr;

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k11, k12 */

subL[14] = kll; subR[14] = klr;

subL[15] = krl; subR[15] = krr;

ROLDQo32(kll, klr, krl, krr, w0, w1, 34);

/* k15, k16 */

subL[20] = kll; subR[20] = klr;

subL[21] = krl; subR[21] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 17);

/* kw3, kw4 */

subL[24] = kll; subR[24] = klr;

subL[25] = krl; subR[25] = krr;

camellia_setup_tail(subkey, subL, subR, 24);

}

static void camellia_setup256(const unsigned char *key, u32 *subkey)

{

u32 kll, klr, krl, krr; /* left half of key */

u32 krll, krlr, krrl, krrr; /* right half of key */

u32 il, ir, t0, t1, w0, w1; /* temporary variables */

u32 subL[34];

u32 subR[34];

/**

* key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)

* (|| is concatenation)

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);

/* generate KL dependent subkeys */

/* kw1 */

subL[0] = kll; subR[0] = klr;

/* kw2 */

subL[1] = krl; subR[1] = krr;

ROLDQo32(kll, klr, krl, krr, w0, w1, 45);

/* k9 */

subL[12] = kll; subR[12] = klr;

/* k10 */

subL[13] = krl; subR[13] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* kl3 */

subL[16] = kll; subR[16] = klr;

/* kl4 */

subL[17] = krl; subR[17] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 17);

/* k17 */

subL[22] = kll; subR[22] = klr;

/* k18 */

subL[23] = krl; subR[23] = krr;

ROLDQo32(kll, klr, krl, krr, w0, w1, 34);

/* k23 */

subL[30] = kll; subR[30] = klr;

/* k24 */

subL[31] = krl; subR[31] = krr;

/* generate KR dependent subkeys */

ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);

/* k3 */

subL[4] = krll; subR[4] = krlr;

/* k4 */

subL[5] = krrl; subR[5] = krrr;

ROLDQ(krll, krlr, krrl, krrr, w0, w1, 15);

/* kl1 */

subL[8] = krll; subR[8] = krlr;

/* kl2 */

subL[9] = krrl; subR[9] = krrr;

ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);

/* k13 */

subL[18] = krll; subR[18] = krlr;

/* k14 */

subL[19] = krrl; subR[19] = krrr;

ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);

/* k19 */

subL[26] = krll; subR[26] = krlr;

/* k20 */

subL[27] = krrl; subR[27] = krrr;

ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 34);

/* generate KA */

kll = subL[0] ^ krll; klr = subR[0] ^ krlr;

krl = subL[1] ^ krrl; krr = subR[1] ^ krrr;

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 */

ROLDQ(kll, klr, krl, krr, w0, w1, 15);

/* k5 */

subL[6] = kll; subR[6] = klr;

/* k6 */

subL[7] = krl; subR[7] = krr;

ROLDQ(kll, klr, krl, krr, w0, w1, 30);

/* k11 */

subL[14] = kll; subR[14] = klr;

/* k12 */

subL[15] = krl; subR[15] = krr;

/* rotation left shift 32bit */

/* kl5 */

subL[24] = klr; subR[24] = krl;

/* kl6 */

subL[25] = krr; subR[25] = kll;

/* rotation left shift 49 from k11,k12 -> k21,k22 */

ROLDQo32(kll, klr, krl, krr, w0, w1, 49);

/* k21 */

subL[28] = kll; subR[28] = klr;

/* k22 */

subL[29] = krl; subR[29] = krr;

/* generate KB dependent subkeys */

/* k1 */

subL[2] = krll; subR[2] = krlr;

/* k2 */

subL[3] = krrl; subR[3] = krrr;

ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);

/* k7 */

subL[10] = krll; subR[10] = krlr;

/* k8 */

subL[11] = krrl; subR[11] = krrr;

ROLDQ(krll, krlr, krrl, krrr, w0, w1, 30);

/* k15 */

subL[20] = krll; subR[20] = krlr;

/* k16 */

subL[21] = krrl; subR[21] = krrr;

ROLDQo32(krll, krlr, krrl, krrr, w0, w1, 51);

/* kw3 */

subL[32] = krll; subR[32] = krlr;

/* kw4 */

subL[33] = krrl; subR[33] = krrr;

camellia_setup_tail(subkey, subL, subR, 32);

}

static void camellia_setup192(const unsigned char *key, u32 *subkey)

{

unsigned char kk[32];

u32 krll, krlr, krrl, krrr;

memcpy(kk, key, 24);

memcpy((unsigned char *)&krll, key+16, 4);

memcpy((unsigned char *)&krlr, key+20, 4);

krrl = ~krll;

krrr = ~krlr;

memcpy(kk+24, (unsigned char *)&krrl, 4);

memcpy(kk+28, (unsigned char *)&krrr, 4);

camellia_setup256(kk, subkey);

}

* Encrypt/decrypt

#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \

t0 = kll; \

t2 = krr; \

t0 &= ll; \

t2 |= rr; \

rl ^= t2; \

lr ^= rol32(t0, 1); \

t3 = krl; \

t1 = klr; \

t3 &= rl; \

t1 |= lr; \

ll ^= t1; \

rr ^= rol32(t3, 1); \

})

#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({ \

yl ^= kl; \

yr ^= kr; \

ir = camellia_sp1110[(u8)xr]; \

il = camellia_sp1110[(u8)(xl >> 24)]; \

ir ^= camellia_sp0222[(u8)(xr >> 24)]; \

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]; \

ir ^= il; \

yl ^= ir; \

yr ^= ror32(il, 8) ^ ir; \

})

/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */

static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)

{

u32 il, ir, t0, t1; /* temporary variables */

/* pre whitening but absorb kw2 */

io[0] ^= SUBKEY_L(0);

io[1] ^= SUBKEY_R(0);

/* main iteration */

#define ROUNDS(i) ({ \

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); \

})

#define FLS(i) ({ \

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); \

})

ROUNDS(0);

FLS(8);

ROUNDS(8);

FLS(16);

ROUNDS(16);

if (max == 32) {

FLS(24);

ROUNDS(24);

}

#undef ROUNDS

#undef FLS

/* post whitening but kw4 */

io[2] ^= SUBKEY_L(max);

io[3] ^= SUBKEY_R(max);

/* NB: io[0],[1] should be swapped with [2],[3] by caller! */

}

static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)

{

u32 il, ir, t0, t1; /* temporary variables */

/* pre whitening but absorb kw2 */

io[0] ^= SUBKEY_L(i);

io[1] ^= SUBKEY_R(i);

/* main iteration */

#define ROUNDS(i) ({ \

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); \

})

#define FLS(i) ({ \

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); \

})

if (i == 32) {

ROUNDS(24);

FLS(24);

}

ROUNDS(16);

FLS(16);

ROUNDS(8);

FLS(8);

ROUNDS(0);

#undef ROUNDS

#undef FLS

/* post whitening but kw4 */

io[2] ^= SUBKEY_L(0);

io[3] ^= SUBKEY_R(0);

/* NB: 0,1 should be swapped with 2,3 by caller! */

}

struct camellia_ctx {

int key_length;

u32 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u32)];

};

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;

if (key_len != 16 && key_len != 24 && key_len != 32)

return -EINVAL;

cctx->key_length = key_len;

switch (key_len) {

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);

unsigned int max;

u32 tmp[4];

tmp[0] = get_unaligned_be32(in);

tmp[1] = get_unaligned_be32(in + 4);

tmp[2] = get_unaligned_be32(in + 8);

tmp[3] = get_unaligned_be32(in + 12);

if (cctx->key_length == 16)

max = 24;

else

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linux/crypto/camellia_generic.c at multikernel-riscv · multikernel/linux · GitHub

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