text: /* Microsoft Reference Implementation for TPM 2.0
   *
   *  The copyright in this software is being made available under the BSD License,
   *  included below. This software may be subject to other third party and
   *  contributor rights, including patent rights, and no such rights are granted
   *  under this license.
   *
   *  Copyright (c) Microsoft Corporation
   *
   *  All rights reserved.
   *
   *  BSD License
   *
   *  Redistribution and use in source and binary forms, with or without modification,
   *  are permitted provided that the following conditions are met:
   *
   *  Redistributions of source code must retain the above copyright notice, this list
   *  of conditions and the following disclaimer.
   *
   *  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.
   *
   *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
   *  AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
   */
  
  //** Introduction
  //
  // The functions in this file are used for initialization of the interface to the
  // LibTomCrypt and MpaLib libraries. This is not used if only the LTC hash and
  // symmetric functions are used.
  
  //** Defines and Includes
  
  #include "Tpm.h"
  
  #if SYM_LIB == LTC && defined TPM_ALG_TDES
  
  //** TDES_setup
  // This function calls the LTC function to generate a TDES key schedule. If the
  // key is one DES key (8 bytes), then it is replicated two more times to create a 
  // 24-byte TDES key. If the key is two key (16 bytes), then the first DES key is
  // replicated to the third key position.
  void TDES_setup(
      const BYTE          *key, 
      UINT32               keyBits, 
      symmetric_key       *skey
      )
  {
      BYTE                 k[24];
      BYTE                *kp;
  
      // If this is two-key, make it three key by replicating K1
      if(keyBits == 128)
      {
          memcpy(k, key, 16);
          memcpy(&k[16], key, 8);
          kp = k;
      }
      else
          kp = (BYTE *)key;
  
      des3_setup(kp, 24, 0, skey);
  }
  
  #endif
  