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/*
* Copyright (c) 2000, 2001, 2002 Virtual Unlimited B.V.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*!\file blockpad.h
* \brief Blockcipher padding algorithms, headers.
* \author Bob Deblier <bob@virtualunlimited.com>
* \ingroup BC_m
*/
#ifndef _BLOCKPAD_H
#define _BLOCKPAD_H
#include "beecrypt.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Enlarge buffer to boundary.
* @param blockbytes desired block alignment/pad boundary
* @param tmp buffer to pad
* @return buffer with pad added
*/
BEECRYPTAPI /*@only@*/ /*@null@*/ /*@unused@*/
memchunk* pkcs5Pad (int blockbytes, /*@only@*/ /*@null@*/ memchunk* tmp)
/*@*/;
/**
* Shrink buffer to boundary.
* @param blockbytes desired block alignment/pad boundary
* @param tmp buffer to unpad
* @return buffer with pad removed
*/
BEECRYPTAPI /*@only@*/ /*@null@*/
memchunk* pkcs5Unpad(int blockbytes,
/*@returned@*/ /*@null@*/ /*@out@*/ memchunk* tmp)
/*@modifies tmp */;
/**
* Copy/enlarge buffer to boundary.
* @param blockbytes desired block alignment/pad boundary
* @param src buffer to pad
* @return copy of buffer with pad added
*/
BEECRYPTAPI /*@only@*/ /*@null@*/
memchunk* pkcs5PadCopy (int blockbytes, const memchunk* src)
/*@*/;
/**
* Copy/shrink buffer to boundary.
* @param blockbytes desired block alignment/pad boundary
* @param src buffer to unpad
* @return copy of buffer with pad removed
*/
BEECRYPTAPI /*@only@*/ /*@null@*/ /*@unused@*/
memchunk* pkcs5UnpadCopy(int blockbytes, const memchunk* src)
/*@*/;
#ifdef __cplusplus
}
#endif
#endif
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