/src/libressl/crypto/sm4/sm4.c

Source (jump to first uncovered line)
/*  $OpenBSD: sm4.c,v 1.1 2019/03/17 17:42:37 tb Exp $  */
/*
 * Copyright (c) 2017, 2019 Ribose Inc
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_SM4
#include <openssl/sm4.h>

struct sm4_key {
        uint32_t rk[SM4_KEY_SCHEDULE];
};

static const uint8_t SM4_S[256] = {
  0xD6, 0x90, 0xE9, 0xFE, 0xCC, 0xE1, 0x3D, 0xB7, 0x16, 0xB6, 0x14, 0xC2,
  0x28, 0xFB, 0x2C, 0x05, 0x2B, 0x67, 0x9A, 0x76, 0x2A, 0xBE, 0x04, 0xC3,
  0xAA, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, 0x9C, 0x42, 0x50, 0xF4,
  0x91, 0xEF, 0x98, 0x7A, 0x33, 0x54, 0x0B, 0x43, 0xED, 0xCF, 0xAC, 0x62,
  0xE4, 0xB3, 0x1C, 0xA9, 0xC9, 0x08, 0xE8, 0x95, 0x80, 0xDF, 0x94, 0xFA,
  0x75, 0x8F, 0x3F, 0xA6, 0x47, 0x07, 0xA7, 0xFC, 0xF3, 0x73, 0x17, 0xBA,
  0x83, 0x59, 0x3C, 0x19, 0xE6, 0x85, 0x4F, 0xA8, 0x68, 0x6B, 0x81, 0xB2,
  0x71, 0x64, 0xDA, 0x8B, 0xF8, 0xEB, 0x0F, 0x4B, 0x70, 0x56, 0x9D, 0x35,
  0x1E, 0x24, 0x0E, 0x5E, 0x63, 0x58, 0xD1, 0xA2, 0x25, 0x22, 0x7C, 0x3B,
  0x01, 0x21, 0x78, 0x87, 0xD4, 0x00, 0x46, 0x57, 0x9F, 0xD3, 0x27, 0x52,
  0x4C, 0x36, 0x02, 0xE7, 0xA0, 0xC4, 0xC8, 0x9E, 0xEA, 0xBF, 0x8A, 0xD2,
  0x40, 0xC7, 0x38, 0xB5, 0xA3, 0xF7, 0xF2, 0xCE, 0xF9, 0x61, 0x15, 0xA1,
  0xE0, 0xAE, 0x5D, 0xA4, 0x9B, 0x34, 0x1A, 0x55, 0xAD, 0x93, 0x32, 0x30,
  0xF5, 0x8C, 0xB1, 0xE3, 0x1D, 0xF6, 0xE2, 0x2E, 0x82, 0x66, 0xCA, 0x60,
  0xC0, 0x29, 0x23, 0xAB, 0x0D, 0x53, 0x4E, 0x6F, 0xD5, 0xDB, 0x37, 0x45,
  0xDE, 0xFD, 0x8E, 0x2F, 0x03, 0xFF, 0x6A, 0x72, 0x6D, 0x6C, 0x5B, 0x51,
  0x8D, 0x1B, 0xAF, 0x92, 0xBB, 0xDD, 0xBC, 0x7F, 0x11, 0xD9, 0x5C, 0x41,
  0x1F, 0x10, 0x5A, 0xD8, 0x0A, 0xC1, 0x31, 0x88, 0xA5, 0xCD, 0x7B, 0xBD,
  0x2D, 0x74, 0xD0, 0x12, 0xB8, 0xE5, 0xB4, 0xB0, 0x89, 0x69, 0x97, 0x4A,
  0x0C, 0x96, 0x77, 0x7E, 0x65, 0xB9, 0xF1, 0x09, 0xC5, 0x6E, 0xC6, 0x84,
  0x18, 0xF0, 0x7D, 0xEC, 0x3A, 0xDC, 0x4D, 0x20, 0x79, 0xEE, 0x5F, 0x3E,
  0xD7, 0xCB, 0x39, 0x48,
};

/*
 * SM4_SBOX_T[j] == L(SM4_SBOX[j]).
 */
static const uint32_t SM4_SBOX_T[256] = {
  0x8ED55B5B, 0xD0924242, 0x4DEAA7A7, 0x06FDFBFB, 0xFCCF3333, 0x65E28787,
  0xC93DF4F4, 0x6BB5DEDE, 0x4E165858, 0x6EB4DADA, 0x44145050, 0xCAC10B0B,
  0x8828A0A0, 0x17F8EFEF, 0x9C2CB0B0, 0x11051414, 0x872BACAC, 0xFB669D9D,
  0xF2986A6A, 0xAE77D9D9, 0x822AA8A8, 0x46BCFAFA, 0x14041010, 0xCFC00F0F,
  0x02A8AAAA, 0x54451111, 0x5F134C4C, 0xBE269898, 0x6D482525, 0x9E841A1A,
  0x1E061818, 0xFD9B6666, 0xEC9E7272, 0x4A430909, 0x10514141, 0x24F7D3D3,
  0xD5934646, 0x53ECBFBF, 0xF89A6262, 0x927BE9E9, 0xFF33CCCC, 0x04555151,
  0x270B2C2C, 0x4F420D0D, 0x59EEB7B7, 0xF3CC3F3F, 0x1CAEB2B2, 0xEA638989,
  0x74E79393, 0x7FB1CECE, 0x6C1C7070, 0x0DABA6A6, 0xEDCA2727, 0x28082020,
  0x48EBA3A3, 0xC1975656, 0x80820202, 0xA3DC7F7F, 0xC4965252, 0x12F9EBEB,
  0xA174D5D5, 0xB38D3E3E, 0xC33FFCFC, 0x3EA49A9A, 0x5B461D1D, 0x1B071C1C,
  0x3BA59E9E, 0x0CFFF3F3, 0x3FF0CFCF, 0xBF72CDCD, 0x4B175C5C, 0x52B8EAEA,
  0x8F810E0E, 0x3D586565, 0xCC3CF0F0, 0x7D196464, 0x7EE59B9B, 0x91871616,
  0x734E3D3D, 0x08AAA2A2, 0xC869A1A1, 0xC76AADAD, 0x85830606, 0x7AB0CACA,
  0xB570C5C5, 0xF4659191, 0xB2D96B6B, 0xA7892E2E, 0x18FBE3E3, 0x47E8AFAF,
  0x330F3C3C, 0x674A2D2D, 0xB071C1C1, 0x0E575959, 0xE99F7676, 0xE135D4D4,
  0x661E7878, 0xB4249090, 0x360E3838, 0x265F7979, 0xEF628D8D, 0x38596161,
  0x95D24747, 0x2AA08A8A, 0xB1259494, 0xAA228888, 0x8C7DF1F1, 0xD73BECEC,
  0x05010404, 0xA5218484, 0x9879E1E1, 0x9B851E1E, 0x84D75353, 0x00000000,
  0x5E471919, 0x0B565D5D, 0xE39D7E7E, 0x9FD04F4F, 0xBB279C9C, 0x1A534949,
  0x7C4D3131, 0xEE36D8D8, 0x0A020808, 0x7BE49F9F, 0x20A28282, 0xD4C71313,
  0xE8CB2323, 0xE69C7A7A, 0x42E9ABAB, 0x43BDFEFE, 0xA2882A2A, 0x9AD14B4B,
  0x40410101, 0xDBC41F1F, 0xD838E0E0, 0x61B7D6D6, 0x2FA18E8E, 0x2BF4DFDF,
  0x3AF1CBCB, 0xF6CD3B3B, 0x1DFAE7E7, 0xE5608585, 0x41155454, 0x25A38686,
  0x60E38383, 0x16ACBABA, 0x295C7575, 0x34A69292, 0xF7996E6E, 0xE434D0D0,
  0x721A6868, 0x01545555, 0x19AFB6B6, 0xDF914E4E, 0xFA32C8C8, 0xF030C0C0,
  0x21F6D7D7, 0xBC8E3232, 0x75B3C6C6, 0x6FE08F8F, 0x691D7474, 0x2EF5DBDB,
  0x6AE18B8B, 0x962EB8B8, 0x8A800A0A, 0xFE679999, 0xE2C92B2B, 0xE0618181,
  0xC0C30303, 0x8D29A4A4, 0xAF238C8C, 0x07A9AEAE, 0x390D3434, 0x1F524D4D,
  0x764F3939, 0xD36EBDBD, 0x81D65757, 0xB7D86F6F, 0xEB37DCDC, 0x51441515,
  0xA6DD7B7B, 0x09FEF7F7, 0xB68C3A3A, 0x932FBCBC, 0x0F030C0C, 0x03FCFFFF,
  0xC26BA9A9, 0xBA73C9C9, 0xD96CB5B5, 0xDC6DB1B1, 0x375A6D6D, 0x15504545,
  0xB98F3636, 0x771B6C6C, 0x13ADBEBE, 0xDA904A4A, 0x57B9EEEE, 0xA9DE7777,
  0x4CBEF2F2, 0x837EFDFD, 0x55114444, 0xBDDA6767, 0x2C5D7171, 0x45400505,
  0x631F7C7C, 0x50104040, 0x325B6969, 0xB8DB6363, 0x220A2828, 0xC5C20707,
  0xF531C4C4, 0xA88A2222, 0x31A79696, 0xF9CE3737, 0x977AEDED, 0x49BFF6F6,
  0x992DB4B4, 0xA475D1D1, 0x90D34343, 0x5A124848, 0x58BAE2E2, 0x71E69797,
  0x64B6D2D2, 0x70B2C2C2, 0xAD8B2626, 0xCD68A5A5, 0xCB955E5E, 0x624B2929,
  0x3C0C3030, 0xCE945A5A, 0xAB76DDDD, 0x867FF9F9, 0xF1649595, 0x5DBBE6E6,
  0x35F2C7C7, 0x2D092424, 0xD1C61717, 0xD66FB9B9, 0xDEC51B1B, 0x94861212,
  0x78186060, 0x30F3C3C3, 0x897CF5F5, 0x5CEFB3B3, 0xD23AE8E8, 0xACDF7373,
  0x794C3535, 0xA0208080, 0x9D78E5E5, 0x56EDBBBB, 0x235E7D7D, 0xC63EF8F8,
  0x8BD45F5F, 0xE7C82F2F, 0xDD39E4E4, 0x68492121,
};

static inline uint32_t
rotl(uint32_t a, uint8_t n)
{
  return (a << n) | (a >> (32 - n));
}

static inline uint32_t
load_u32_be(const uint8_t *b, uint32_t n)
{
  return ((uint32_t)b[4 * n] << 24) |
      ((uint32_t)b[4 * n + 1] << 16) |
      ((uint32_t)b[4 * n + 2] << 8) |
      ((uint32_t)b[4 * n + 3]);
}

static inline void
store_u32_be(uint32_t v, uint8_t *b)
{
  b[0] = (uint8_t)(v >> 24);
  b[1] = (uint8_t)(v >> 16);
  b[2] = (uint8_t)(v >> 8);
  b[3] = (uint8_t)(v);
}

static inline uint32_t
SM4_T_slow(uint32_t X)
{
  uint32_t t = 0;

  t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;
  t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;
  t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;
  t |= SM4_S[(uint8_t)X];

  /*
   * L linear transform
   */
  return t ^ rotl(t, 2) ^ rotl(t, 10) ^ rotl(t, 18) ^ rotl(t, 24);
}

static inline uint32_t
SM4_T(uint32_t X)
{
  return SM4_SBOX_T[(uint8_t)(X >> 24)] ^
      rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^
      rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^
      rotl(SM4_SBOX_T[(uint8_t)X], 8);
}

int
SM4_set_key(const uint8_t *key, SM4_KEY *k)
{
  struct sm4_key *ks = (struct sm4_key *)k;

  /*
   * Family Key
   */
  static const uint32_t FK[4] = {
    0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc,
  };

  /*
   * Constant Key
   */
  static const uint32_t CK[32] = {
    0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269,
    0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9,
    0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249,
    0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9,
    0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229,
    0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299,
    0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209,
    0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279,
  };

  uint32_t K[4];
  int i;

  K[0] = load_u32_be(key, 0) ^ FK[0];
  K[1] = load_u32_be(key, 1) ^ FK[1];
  K[2] = load_u32_be(key, 2) ^ FK[2];
  K[3] = load_u32_be(key, 3) ^ FK[3];

  for (i = 0; i < SM4_KEY_SCHEDULE; i++) {
    uint32_t X;
    uint32_t t = 0;

    X = K[(i + 1) % 4] ^ K[(i + 2) % 4] ^ K[(i + 3) % 4] ^ CK[i];

    t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;
    t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;
    t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;
    t |= SM4_S[(uint8_t)X];

    t = t ^ rotl(t, 13) ^ rotl(t, 23);
    K[i % 4] ^= t;
    ks->rk[i] = K[i % 4];
  }

  return 1;
}

#define SM4_ROUNDS(k0, k1, k2, k3, F)     \
    do {           \
     B0 ^= F(B1 ^ B2 ^ B3 ^ ks->rk[k0]);  \
     B1 ^= F(B0 ^ B2 ^ B3 ^ ks->rk[k1]);  \
     B2 ^= F(B0 ^ B1 ^ B3 ^ ks->rk[k2]);  \
     B3 ^= F(B0 ^ B1 ^ B2 ^ ks->rk[k3]);  \
    } while(0)

void
SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *k)
{
  struct sm4_key *ks = (struct sm4_key *)k;
  uint32_t B0 = load_u32_be(in, 0);
  uint32_t B1 = load_u32_be(in, 1);
  uint32_t B2 = load_u32_be(in, 2);
  uint32_t B3 = load_u32_be(in, 3);

  /*
   * Uses byte-wise sbox in the first and last rounds to provide some
   * protection from cache based side channels.
   */
  SM4_ROUNDS( 0,  1,  2,  3, SM4_T_slow);
  SM4_ROUNDS( 4,  5,  6,  7, SM4_T);
  SM4_ROUNDS( 8,  9, 10, 11, SM4_T);
  SM4_ROUNDS(12, 13, 14, 15, SM4_T);
  SM4_ROUNDS(16, 17, 18, 19, SM4_T);
  SM4_ROUNDS(20, 21, 22, 23, SM4_T);
  SM4_ROUNDS(24, 25, 26, 27, SM4_T);
  SM4_ROUNDS(28, 29, 30, 31, SM4_T_slow);

  store_u32_be(B3, out);
  store_u32_be(B2, out + 4);
  store_u32_be(B1, out + 8);
  store_u32_be(B0, out + 12);
}

void
SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *k)
{
  struct sm4_key *ks = (struct sm4_key *)k;
  uint32_t B0 = load_u32_be(in, 0);
  uint32_t B1 = load_u32_be(in, 1);
  uint32_t B2 = load_u32_be(in, 2);
  uint32_t B3 = load_u32_be(in, 3);

  SM4_ROUNDS(31, 30, 29, 28, SM4_T_slow);
  SM4_ROUNDS(27, 26, 25, 24, SM4_T);
  SM4_ROUNDS(23, 22, 21, 20, SM4_T);
  SM4_ROUNDS(19, 18, 17, 16, SM4_T);
  SM4_ROUNDS(15, 14, 13, 12, SM4_T);
  SM4_ROUNDS(11, 10,  9,  8, SM4_T);
  SM4_ROUNDS( 7,  6,  5,  4, SM4_T);
  SM4_ROUNDS( 3,  2,  1,  0, SM4_T_slow);

  store_u32_be(B3, out);
  store_u32_be(B2, out + 4);
  store_u32_be(B1, out + 8);
  store_u32_be(B0, out + 12);
}

#endif /* OPENSSL_NO_SM4 */

Coverage Report

Created: 2022-08-24 06:31

Line	Count	Source (jump to first uncovered line)
1		/* $OpenBSD: sm4.c,v 1.1 2019/03/17 17:42:37 tb Exp $ */
2		/*
3		* Copyright (c) 2017, 2019 Ribose Inc
4		*
5		* Permission to use, copy, modify, and/or distribute this software for any
6		* purpose with or without fee is hereby granted, provided that the above
7		* copyright notice and this permission notice appear in all copies.
8		*
9		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16		*/
17
18		#include <openssl/opensslconf.h>
19
20		#ifndef OPENSSL_NO_SM4
21		#include <openssl/sm4.h>
22
23		struct sm4_key {
24		uint32_t rk[SM4_KEY_SCHEDULE];
25		};
26
27		static const uint8_t SM4_S[256] = {
28		0xD6, 0x90, 0xE9, 0xFE, 0xCC, 0xE1, 0x3D, 0xB7, 0x16, 0xB6, 0x14, 0xC2,
29		0x28, 0xFB, 0x2C, 0x05, 0x2B, 0x67, 0x9A, 0x76, 0x2A, 0xBE, 0x04, 0xC3,
30		0xAA, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, 0x9C, 0x42, 0x50, 0xF4,
31		0x91, 0xEF, 0x98, 0x7A, 0x33, 0x54, 0x0B, 0x43, 0xED, 0xCF, 0xAC, 0x62,
32		0xE4, 0xB3, 0x1C, 0xA9, 0xC9, 0x08, 0xE8, 0x95, 0x80, 0xDF, 0x94, 0xFA,
33		0x75, 0x8F, 0x3F, 0xA6, 0x47, 0x07, 0xA7, 0xFC, 0xF3, 0x73, 0x17, 0xBA,
34		0x83, 0x59, 0x3C, 0x19, 0xE6, 0x85, 0x4F, 0xA8, 0x68, 0x6B, 0x81, 0xB2,
35		0x71, 0x64, 0xDA, 0x8B, 0xF8, 0xEB, 0x0F, 0x4B, 0x70, 0x56, 0x9D, 0x35,
36		0x1E, 0x24, 0x0E, 0x5E, 0x63, 0x58, 0xD1, 0xA2, 0x25, 0x22, 0x7C, 0x3B,
37		0x01, 0x21, 0x78, 0x87, 0xD4, 0x00, 0x46, 0x57, 0x9F, 0xD3, 0x27, 0x52,
38		0x4C, 0x36, 0x02, 0xE7, 0xA0, 0xC4, 0xC8, 0x9E, 0xEA, 0xBF, 0x8A, 0xD2,
39		0x40, 0xC7, 0x38, 0xB5, 0xA3, 0xF7, 0xF2, 0xCE, 0xF9, 0x61, 0x15, 0xA1,
40		0xE0, 0xAE, 0x5D, 0xA4, 0x9B, 0x34, 0x1A, 0x55, 0xAD, 0x93, 0x32, 0x30,
41		0xF5, 0x8C, 0xB1, 0xE3, 0x1D, 0xF6, 0xE2, 0x2E, 0x82, 0x66, 0xCA, 0x60,
42		0xC0, 0x29, 0x23, 0xAB, 0x0D, 0x53, 0x4E, 0x6F, 0xD5, 0xDB, 0x37, 0x45,
43		0xDE, 0xFD, 0x8E, 0x2F, 0x03, 0xFF, 0x6A, 0x72, 0x6D, 0x6C, 0x5B, 0x51,
44		0x8D, 0x1B, 0xAF, 0x92, 0xBB, 0xDD, 0xBC, 0x7F, 0x11, 0xD9, 0x5C, 0x41,
45		0x1F, 0x10, 0x5A, 0xD8, 0x0A, 0xC1, 0x31, 0x88, 0xA5, 0xCD, 0x7B, 0xBD,
46		0x2D, 0x74, 0xD0, 0x12, 0xB8, 0xE5, 0xB4, 0xB0, 0x89, 0x69, 0x97, 0x4A,
47		0x0C, 0x96, 0x77, 0x7E, 0x65, 0xB9, 0xF1, 0x09, 0xC5, 0x6E, 0xC6, 0x84,
48		0x18, 0xF0, 0x7D, 0xEC, 0x3A, 0xDC, 0x4D, 0x20, 0x79, 0xEE, 0x5F, 0x3E,
49		0xD7, 0xCB, 0x39, 0x48,
50		};
51
52		/*
53		* SM4_SBOX_T[j] == L(SM4_SBOX[j]).
54		*/
55		static const uint32_t SM4_SBOX_T[256] = {
56		0x8ED55B5B, 0xD0924242, 0x4DEAA7A7, 0x06FDFBFB, 0xFCCF3333, 0x65E28787,
57		0xC93DF4F4, 0x6BB5DEDE, 0x4E165858, 0x6EB4DADA, 0x44145050, 0xCAC10B0B,
58		0x8828A0A0, 0x17F8EFEF, 0x9C2CB0B0, 0x11051414, 0x872BACAC, 0xFB669D9D,
59		0xF2986A6A, 0xAE77D9D9, 0x822AA8A8, 0x46BCFAFA, 0x14041010, 0xCFC00F0F,
60		0x02A8AAAA, 0x54451111, 0x5F134C4C, 0xBE269898, 0x6D482525, 0x9E841A1A,
61		0x1E061818, 0xFD9B6666, 0xEC9E7272, 0x4A430909, 0x10514141, 0x24F7D3D3,
62		0xD5934646, 0x53ECBFBF, 0xF89A6262, 0x927BE9E9, 0xFF33CCCC, 0x04555151,
63		0x270B2C2C, 0x4F420D0D, 0x59EEB7B7, 0xF3CC3F3F, 0x1CAEB2B2, 0xEA638989,
64		0x74E79393, 0x7FB1CECE, 0x6C1C7070, 0x0DABA6A6, 0xEDCA2727, 0x28082020,
65		0x48EBA3A3, 0xC1975656, 0x80820202, 0xA3DC7F7F, 0xC4965252, 0x12F9EBEB,
66		0xA174D5D5, 0xB38D3E3E, 0xC33FFCFC, 0x3EA49A9A, 0x5B461D1D, 0x1B071C1C,
67		0x3BA59E9E, 0x0CFFF3F3, 0x3FF0CFCF, 0xBF72CDCD, 0x4B175C5C, 0x52B8EAEA,
68		0x8F810E0E, 0x3D586565, 0xCC3CF0F0, 0x7D196464, 0x7EE59B9B, 0x91871616,
69		0x734E3D3D, 0x08AAA2A2, 0xC869A1A1, 0xC76AADAD, 0x85830606, 0x7AB0CACA,
70		0xB570C5C5, 0xF4659191, 0xB2D96B6B, 0xA7892E2E, 0x18FBE3E3, 0x47E8AFAF,
71		0x330F3C3C, 0x674A2D2D, 0xB071C1C1, 0x0E575959, 0xE99F7676, 0xE135D4D4,
72		0x661E7878, 0xB4249090, 0x360E3838, 0x265F7979, 0xEF628D8D, 0x38596161,
73		0x95D24747, 0x2AA08A8A, 0xB1259494, 0xAA228888, 0x8C7DF1F1, 0xD73BECEC,
74		0x05010404, 0xA5218484, 0x9879E1E1, 0x9B851E1E, 0x84D75353, 0x00000000,
75		0x5E471919, 0x0B565D5D, 0xE39D7E7E, 0x9FD04F4F, 0xBB279C9C, 0x1A534949,
76		0x7C4D3131, 0xEE36D8D8, 0x0A020808, 0x7BE49F9F, 0x20A28282, 0xD4C71313,
77		0xE8CB2323, 0xE69C7A7A, 0x42E9ABAB, 0x43BDFEFE, 0xA2882A2A, 0x9AD14B4B,
78		0x40410101, 0xDBC41F1F, 0xD838E0E0, 0x61B7D6D6, 0x2FA18E8E, 0x2BF4DFDF,
79		0x3AF1CBCB, 0xF6CD3B3B, 0x1DFAE7E7, 0xE5608585, 0x41155454, 0x25A38686,
80		0x60E38383, 0x16ACBABA, 0x295C7575, 0x34A69292, 0xF7996E6E, 0xE434D0D0,
81		0x721A6868, 0x01545555, 0x19AFB6B6, 0xDF914E4E, 0xFA32C8C8, 0xF030C0C0,
82		0x21F6D7D7, 0xBC8E3232, 0x75B3C6C6, 0x6FE08F8F, 0x691D7474, 0x2EF5DBDB,
83		0x6AE18B8B, 0x962EB8B8, 0x8A800A0A, 0xFE679999, 0xE2C92B2B, 0xE0618181,
84		0xC0C30303, 0x8D29A4A4, 0xAF238C8C, 0x07A9AEAE, 0x390D3434, 0x1F524D4D,
85		0x764F3939, 0xD36EBDBD, 0x81D65757, 0xB7D86F6F, 0xEB37DCDC, 0x51441515,
86		0xA6DD7B7B, 0x09FEF7F7, 0xB68C3A3A, 0x932FBCBC, 0x0F030C0C, 0x03FCFFFF,
87		0xC26BA9A9, 0xBA73C9C9, 0xD96CB5B5, 0xDC6DB1B1, 0x375A6D6D, 0x15504545,
88		0xB98F3636, 0x771B6C6C, 0x13ADBEBE, 0xDA904A4A, 0x57B9EEEE, 0xA9DE7777,
89		0x4CBEF2F2, 0x837EFDFD, 0x55114444, 0xBDDA6767, 0x2C5D7171, 0x45400505,
90		0x631F7C7C, 0x50104040, 0x325B6969, 0xB8DB6363, 0x220A2828, 0xC5C20707,
91		0xF531C4C4, 0xA88A2222, 0x31A79696, 0xF9CE3737, 0x977AEDED, 0x49BFF6F6,
92		0x992DB4B4, 0xA475D1D1, 0x90D34343, 0x5A124848, 0x58BAE2E2, 0x71E69797,
93		0x64B6D2D2, 0x70B2C2C2, 0xAD8B2626, 0xCD68A5A5, 0xCB955E5E, 0x624B2929,
94		0x3C0C3030, 0xCE945A5A, 0xAB76DDDD, 0x867FF9F9, 0xF1649595, 0x5DBBE6E6,
95		0x35F2C7C7, 0x2D092424, 0xD1C61717, 0xD66FB9B9, 0xDEC51B1B, 0x94861212,
96		0x78186060, 0x30F3C3C3, 0x897CF5F5, 0x5CEFB3B3, 0xD23AE8E8, 0xACDF7373,
97		0x794C3535, 0xA0208080, 0x9D78E5E5, 0x56EDBBBB, 0x235E7D7D, 0xC63EF8F8,
98		0x8BD45F5F, 0xE7C82F2F, 0xDD39E4E4, 0x68492121,
99		};
100
101		static inline uint32_t
102		rotl(uint32_t a, uint8_t n)
103	0	{
104	0	return (a << n) \| (a >> (32 - n));
105	0	}
106
107		static inline uint32_t
108		load_u32_be(const uint8_t *b, uint32_t n)
109	0	{
110	0	return ((uint32_t)b[4 * n] << 24) \|
111	0	((uint32_t)b[4 * n + 1] << 16) \|
112	0	((uint32_t)b[4 * n + 2] << 8) \|
113	0	((uint32_t)b[4 * n + 3]);
114	0	}
115
116		static inline void
117		store_u32_be(uint32_t v, uint8_t *b)
118	0	{
119	0	b[0] = (uint8_t)(v >> 24);
120	0	b[1] = (uint8_t)(v >> 16);
121	0	b[2] = (uint8_t)(v >> 8);
122	0	b[3] = (uint8_t)(v);
123	0	}
124
125		static inline uint32_t
126		SM4_T_slow(uint32_t X)
127	0	{
128	0	uint32_t t = 0;
129
130	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;
131	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;
132	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;
133	0	t \|= SM4_S[(uint8_t)X];
134
135		/*
136		* L linear transform
137		*/
138	0	return t ^ rotl(t, 2) ^ rotl(t, 10) ^ rotl(t, 18) ^ rotl(t, 24);
139	0	}
140
141		static inline uint32_t
142		SM4_T(uint32_t X)
143	0	{
144	0	return SM4_SBOX_T[(uint8_t)(X >> 24)] ^
145	0	rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^
146	0	rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^
147	0	rotl(SM4_SBOX_T[(uint8_t)X], 8);
148	0	}
149
150		int
151		SM4_set_key(const uint8_t key, SM4_KEY k)
152	0	{
153	0	struct sm4_key ks = (struct sm4_key )k;
154
155		/*
156		* Family Key
157		*/
158	0	static const uint32_t FK[4] = {
159	0	0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc,
160	0	};
161
162		/*
163		* Constant Key
164		*/
165	0	static const uint32_t CK[32] = {
166	0	0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269,
167	0	0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9,
168	0	0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249,
169	0	0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9,
170	0	0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229,
171	0	0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299,
172	0	0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209,
173	0	0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279,
174	0	};
175
176	0	uint32_t K[4];
177	0	int i;
178
179	0	K[0] = load_u32_be(key, 0) ^ FK[0];
180	0	K[1] = load_u32_be(key, 1) ^ FK[1];
181	0	K[2] = load_u32_be(key, 2) ^ FK[2];
182	0	K[3] = load_u32_be(key, 3) ^ FK[3];
183
184	0	for (i = 0; i < SM4_KEY_SCHEDULE; i++) {
185	0	uint32_t X;
186	0	uint32_t t = 0;
187
188	0	X = K[(i + 1) % 4] ^ K[(i + 2) % 4] ^ K[(i + 3) % 4] ^ CK[i];
189
190	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;
191	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;
192	0	t \|= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;
193	0	t \|= SM4_S[(uint8_t)X];
194
195	0	t = t ^ rotl(t, 13) ^ rotl(t, 23);
196	0	K[i % 4] ^= t;
197	0	ks->rk[i] = K[i % 4];
198	0	}
199
200	0	return 1;
201	0	}
202
203		#define SM4_ROUNDS(k0, k1, k2, k3, F) \
204	0	do { \
205	0	B0 ^= F(B1 ^ B2 ^ B3 ^ ks->rk[k0]); \
206	0	B1 ^= F(B0 ^ B2 ^ B3 ^ ks->rk[k1]); \
207	0	B2 ^= F(B0 ^ B1 ^ B3 ^ ks->rk[k2]); \
208	0	B3 ^= F(B0 ^ B1 ^ B2 ^ ks->rk[k3]); \
209	0	} while(0)
210
211		void
212		SM4_encrypt(const uint8_t in, uint8_t out, const SM4_KEY *k)
213	0	{
214	0	struct sm4_key ks = (struct sm4_key )k;
215	0	uint32_t B0 = load_u32_be(in, 0);
216	0	uint32_t B1 = load_u32_be(in, 1);
217	0	uint32_t B2 = load_u32_be(in, 2);
218	0	uint32_t B3 = load_u32_be(in, 3);
219
220		/*
221		* Uses byte-wise sbox in the first and last rounds to provide some
222		* protection from cache based side channels.
223		*/
224	0	SM4_ROUNDS( 0, 1, 2, 3, SM4_T_slow);
225	0	SM4_ROUNDS( 4, 5, 6, 7, SM4_T);
226	0	SM4_ROUNDS( 8, 9, 10, 11, SM4_T);
227	0	SM4_ROUNDS(12, 13, 14, 15, SM4_T);
228	0	SM4_ROUNDS(16, 17, 18, 19, SM4_T);
229	0	SM4_ROUNDS(20, 21, 22, 23, SM4_T);
230	0	SM4_ROUNDS(24, 25, 26, 27, SM4_T);
231	0	SM4_ROUNDS(28, 29, 30, 31, SM4_T_slow);
232
233	0	store_u32_be(B3, out);
234	0	store_u32_be(B2, out + 4);
235	0	store_u32_be(B1, out + 8);
236	0	store_u32_be(B0, out + 12);
237	0	}
238
239		void
240		SM4_decrypt(const uint8_t in, uint8_t out, const SM4_KEY *k)
241	0	{
242	0	struct sm4_key ks = (struct sm4_key )k;
243	0	uint32_t B0 = load_u32_be(in, 0);
244	0	uint32_t B1 = load_u32_be(in, 1);
245	0	uint32_t B2 = load_u32_be(in, 2);
246	0	uint32_t B3 = load_u32_be(in, 3);
247
248	0	SM4_ROUNDS(31, 30, 29, 28, SM4_T_slow);
249	0	SM4_ROUNDS(27, 26, 25, 24, SM4_T);
250	0	SM4_ROUNDS(23, 22, 21, 20, SM4_T);
251	0	SM4_ROUNDS(19, 18, 17, 16, SM4_T);
252	0	SM4_ROUNDS(15, 14, 13, 12, SM4_T);
253	0	SM4_ROUNDS(11, 10, 9, 8, SM4_T);
254	0	SM4_ROUNDS( 7, 6, 5, 4, SM4_T);
255	0	SM4_ROUNDS( 3, 2, 1, 0, SM4_T_slow);
256
257	0	store_u32_be(B3, out);
258	0	store_u32_be(B2, out + 4);
259	0	store_u32_be(B1, out + 8);
260	0	store_u32_be(B0, out + 12);
261	0	}
262
263		#endif /* OPENSSL_NO_SM4 */