text: /* crypto/sms4/sms4_common.c */
  /* ====================================================================
   * Copyright (c) 2014 - 2016 The GmSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the GmSSL Project.
   *    (http://gmssl.org/)"
   *
   * 4. The name "GmSSL Project" must not be used to endorse or promote
   *    products derived from this software without prior written
   *    permission. For written permission, please contact
   *    guanzhi1980@gmail.com.
   *
   * 5. Products derived from this software may not be called "GmSSL"
   *    nor may "GmSSL" appear in their names without prior written
   *    permission of the GmSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the GmSSL Project
   *    (http://gmssl.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE GmSSL PROJECT OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   * ====================================================================
   */
  
  #include <stdint.h>
  #include "sms4_lcl.h"
  
  uint8_t SBOX[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 
  };
  
  uint32_t SBOX32L[256 * 256];
  uint32_t SBOX32H[256 * 256];
  
  void sms4_init_sbox32(void)
  {
  	int i, j;
  	uint32_t a;
  
  	for (i = 0; i < 256; i++) {
  		for (j = 0; j < 256; j++) {
  			a = SBOX[i] << 8 | SBOX[j];
  			SBOX32L[(i << 8) + j] = a;
  			SBOX32H[(i << 8) + j] = a << 16;
  		}
  	}
  }
  
  