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76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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* des.h
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*
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* header file for DES-150 library
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the DES-150 library.
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*
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* The Initial Developer of the Original Code is
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* Nelson B. Bolyard, nelsonb@iname.com.
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* Portions created by the Initial Developer are Copyright (C) 1990
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _DES_H_
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#define _DES_H_ 1
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#include "blapi.h"
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typedef unsigned char BYTE;
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typedef unsigned int HALF;
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#define HALFPTR(x) ((HALF *)(x))
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#define SHORTPTR(x) ((unsigned short *)(x))
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#define BYTEPTR(x) ((BYTE *)(x))
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typedef enum {
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DES_ENCRYPT = 0x5555,
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DES_DECRYPT = 0xAAAA
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} DESDirection;
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typedef void DESFunc(struct DESContextStr *cx, BYTE *out, const BYTE *in,
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unsigned int len);
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struct DESContextStr {
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/* key schedule, 16 internal keys, each with 8 6-bit parts */
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HALF ks0 [32];
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HALF ks1 [32];
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HALF ks2 [32];
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HALF iv [2];
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DESDirection direction;
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DESFunc *worker;
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};
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void DES_MakeSchedule( HALF * ks, const BYTE * key, DESDirection direction);
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void DES_Do1Block( HALF * ks, const BYTE * inbuf, BYTE * outbuf);
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#endif
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