text: /**********************************************************************
   *                        gost89.c                                    *
   *             Copyright (c) 2005-2006 Cryptocom LTD                  *
   *         This file is distributed under the same license as OpenSSL *
   *                                                                    *
   *          Implementation of GOST 28147-89 encryption algorithm      *
   *            No OpenSSL libraries required to compile and use        *
   *                              this code                             *
   **********************************************************************/
  #include <string.h>
  #include "gost89.h"
  #include <stdio.h>
  #include <string.h>
  
  static void hexdump(FILE *f, const char *title, const unsigned char *s, int l)
  {
      int n = 0;
  
      fprintf(f, "%s", title);
      for (; n < l; ++n) {
          if ((n % 16) == 0)
              fprintf(f, "\n%04x", n);
          fprintf(f, " %02x", s[n]);
      }
      fprintf(f, "\n");
  }
  
  int main(void)
  {
      int ret = 0;
  
      const unsigned char initial_key[] = {
          0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF,
          0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
          0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
          0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF
      };
  
      const unsigned char meshed_key[] = {
          0x86, 0x3E, 0xA0, 0x17, 0x84, 0x2C, 0x3D, 0x37,
          0x2B, 0x18, 0xA8, 0x5A, 0x28, 0xE2, 0x31, 0x7D,
          0x74, 0xBE, 0xFC, 0x10, 0x77, 0x20, 0xDE, 0x0C,
          0x9E, 0x8A, 0xB9, 0x74, 0xAB, 0xD0, 0x0C, 0xA0,
      };
  
      unsigned char buf[32];
  
      gost_ctx ctx;
      kboxinit(&ctx, &Gost28147_TC26ParamSetZ);
      magma_key(&ctx, initial_key);
      magma_get_key(&ctx, buf);
  
      hexdump(stdout, "Initial key", buf, 32);
  
      acpkm_magma_key_meshing(&ctx);
      magma_get_key(&ctx, buf);
      hexdump(stdout, "Meshed key - K2", buf, 32);
  
      if (memcmp(meshed_key, buf, 32)) {
          fprintf(stderr, "Magma meshing failed");
  	ret = 1;
      }
  
      acpkm_magma_key_meshing(&ctx);
      magma_get_key(&ctx, buf);
      hexdump(stdout, "Meshed key - K3", buf, 32);
  
      acpkm_magma_key_meshing(&ctx);
      magma_get_key(&ctx, buf);
      hexdump(stdout, "Meshed key - K4", buf, 32);
  
      return ret;
  }
  