/usr/include/gwenhywfar4/gwenhywfar/padd.h is in libgwenhywfar-core-dev 4.15.3-5+b1.
This file is owned by root:root, with mode 0o644.
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$RCSfile$
-------------------
cvs : $Id$
begin : Mon Jan 05 2004
copyright : (C) 2004 by Martin Preuss
email : martin@libchipcard.de
***************************************************************************
* *
* 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 *
* *
***************************************************************************/
#ifndef GWEN_PADD_H
#define GWEN_PADD_H
#include <gwenhywfar/buffer.h>
#include <gwenhywfar/paddalgo.h>
#include <gwenhywfar/mdigest.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @defgroup MOD_CRYPT_PADD Padding Functions
* @ingroup MOD_CRYPT
* These functions are used for padding when encrypting/decrypting data
* using 2-key-triple-DES or when signing data.
* The original code (in C++) has been written by
* <strong>Fabian Kaiser</strong> for <strong>OpenHBCI</strong>
* (file rsakey.cpp). Translated to C and slightly modified by me
* (Martin Preuss)
*/
/*@{*/
/**
* This function padds the given buffer according to ISO9796.
* The given buffer is expected to contain a 20 byte hash created using
* RIPEMD 160. This is padded to 96 bytes according to ISO 9796 (including
* appendix A4).
*/
GWENHYWFAR_API
int GWEN_Padd_PaddWithISO9796(GWEN_BUFFER *src);
/**
* This function padds according to ISO 8786-2.
*/
GWENHYWFAR_API
int GWEN_Padd_PaddWithIso9796_2(GWEN_BUFFER *buf, int dstSize);
GWENHYWFAR_API
int GWEN_Padd_UnpaddWithIso9796_2(GWEN_BUFFER *buf);
/**
* This is a compatibility function
* (calls @ref GWEN_Padd_PaddWithAnsiX9_23ToMultipleOf with param y=8).
*/
GWENHYWFAR_API
int GWEN_Padd_PaddWithAnsiX9_23(GWEN_BUFFER *src);
/**
* This is a compatibility function
* (calls @ref GWEN_Padd_UnpaddWithAnsiX9_23FromMultipleOf with param y=8).
*/
GWENHYWFAR_API
int GWEN_Padd_UnpaddWithAnsiX9_23(GWEN_BUFFER *src);
/**
* This function is used to pad the plain text data to a multiple of 8 bytes
* size before encrypting it.
* This is done by adding bytes to the buffer until its length is multiple of
* Y bytes. The byte added is the number of padding bytes appended.
* Example: Y is 8, buffer initially contains 5 bytes, so 3 bytes are needed to make
* the buffer length a multiple of 8. So the number "3" is added three times.
* Please note that if the buffer initially has a multiple of Y bytes then
* Y bytes are added (this is needed to make sure the unpadd function can
* always recover data padded in this manner).
*
*/
GWENHYWFAR_API
int GWEN_Padd_PaddWithAnsiX9_23ToMultipleOf(GWEN_BUFFER *src, int y);
/**
* This function is used to remove padding from plain text data after
* decrypting it.
*/
GWENHYWFAR_API
int GWEN_Padd_UnpaddWithAnsiX9_23FromMultipleOf(GWEN_BUFFER *src, int y);
GWENHYWFAR_API
int GWEN_Padd_PaddWithPkcs1Bt1(GWEN_BUFFER *src, int dstSize);
GWENHYWFAR_API
int GWEN_Padd_UnpaddWithPkcs1Bt1(GWEN_BUFFER *src);
GWENHYWFAR_API
int GWEN_Padd_PaddWithPkcs1Bt2(GWEN_BUFFER *src, int dstSize);
GWENHYWFAR_API
int GWEN_Padd_UnpaddWithPkcs1Bt2(GWEN_BUFFER *src);
GWENHYWFAR_API
int GWEN_Padd_MGF1(uint8_t *pDestBuffer,
uint32_t lDestBuffer,
const uint8_t *pSeed,
uint32_t lSeed,
GWEN_MDIGEST *md);
/**
* @param nbits number of actual bits of the modulus
*/
GWENHYWFAR_API
int GWEN_Padd_AddPkcs1Pss(uint8_t *pDestBuffer,
uint32_t lDestBuffer,
uint32_t nbits,
const uint8_t *pHash,
uint32_t lHash,
uint32_t lSalt,
GWEN_MDIGEST *md);
GWENHYWFAR_API
int GWEN_Padd_VerifyPkcs1Pss(const uint8_t *pSrcBuffer,
uint32_t lSrcBuffer,
uint32_t nbits,
const uint8_t *pHash,
uint32_t lHash,
uint32_t lSalt,
GWEN_MDIGEST *md);
GWENHYWFAR_API
int GWEN_Padd_ApplyPaddAlgo(const GWEN_CRYPT_PADDALGO *a, GWEN_BUFFER *src);
GWENHYWFAR_API
int GWEN_Padd_UnapplyPaddAlgo(const GWEN_CRYPT_PADDALGO *a, GWEN_BUFFER *buf);
/*@}*/
#ifdef __cplusplus
}
#endif
#endif /* GWEN_PADD_H */
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