security/nss/lib/freebl/des.h

   1 /*
   2  *  des.h
   3  *
   4  *  header file for DES-150 library
   5  *
   6  * ***** BEGIN LICENSE BLOCK *****
   7  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   8  *
   9  * The contents of this file are subject to the Mozilla Public License Version
  10  * 1.1 (the "License"); you may not use this file except in compliance with
  11  * the License. You may obtain a copy of the License at
  12  * http://www.mozilla.org/MPL/
  13  *
  14  * Software distributed under the License is distributed on an "AS IS" basis,
  15  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  16  * for the specific language governing rights and limitations under the
  17  * License.
  18  *
  19  * The Original Code is the DES-150 library.
  20  *
  21  * The Initial Developer of the Original Code is
  22  * Nelson B. Bolyard, nelsonb@iname.com.
  23  * Portions created by the Initial Developer are Copyright (C) 1990
  24  * the Initial Developer. All Rights Reserved.
  25  *
  26  * Contributor(s):
  27  *
  28  * Alternatively, the contents of this file may be used under the terms of
  29  * either the GNU General Public License Version 2 or later (the "GPL"), or
  30  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  31  * in which case the provisions of the GPL or the LGPL are applicable instead
  32  * of those above. If you wish to allow use of your version of this file only
  33  * under the terms of either the GPL or the LGPL, and not to allow others to
  34  * use your version of this file under the terms of the MPL, indicate your
  35  * decision by deleting the provisions above and replace them with the notice
  36  * and other provisions required by the GPL or the LGPL. If you do not delete
  37  * the provisions above, a recipient may use your version of this file under
  38  * the terms of any one of the MPL, the GPL or the LGPL.
  39  *
  40  * ***** END LICENSE BLOCK ***** */
  41
  42 #ifndef _DES_H_
  43 #define _DES_H_ 1
  44
  45 #include "blapi.h"
  46
  47 typedef unsigned char BYTE;
  48 typedef unsigned int  HALF;
  49
  50 #define HALFPTR(x) ((HALF *)(x))
  51 #define SHORTPTR(x) ((unsigned short *)(x))
  52 #define BYTEPTR(x) ((BYTE *)(x))
  53
  54 typedef enum {
  55     DES_ENCRYPT = 0x5555,
  56     DES_DECRYPT = 0xAAAA
  57 } DESDirection;
  58
  59 typedef void DESFunc(struct DESContextStr *cx, BYTE *out, const BYTE *in,
  60                      unsigned int len);
  61
  62 struct DESContextStr {
  63     /* key schedule, 16 internal keys, each with 8 6-bit parts */
  64     HALF ks0 [32];
  65     HALF ks1 [32];
  66     HALF ks2 [32];
  67     HALF iv  [2];
  68     DESDirection direction;
  69     DESFunc  *worker;
  70 };
  71
  72 void DES_MakeSchedule( HALF * ks, const BYTE * key,   DESDirection direction);
  73 void DES_Do1Block(     HALF * ks, const BYTE * inbuf, BYTE * outbuf);
  74
  75 #endif