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/*
* Copyright (c) 2003 Bob Deblier
*
* 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 mpbarrett.h
* \brief Multi-precision integer routines using Barrett modular reduction, headers.
* \author Bob Deblier <bob.deblier@pandora.be>
* \ingroup MP_m
*/
#ifndef _MPBARRETT_H
#define _MPBARRETT_H
#include "beecrypt.h"
#include "mpnumber.h"
typedef struct
{
size_t size;
/*@owned@*/
mpw* modl; /* (size) words */
/*@dependent@*/ /*@null@*/
mpw* mu; /* (size+1) words */
} mpbarrett;
#ifdef __cplusplus
extern "C" {
#endif
/**
*/
BEECRYPTAPI
void mpbzero(/*@out@*/ mpbarrett* b)
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI
void mpbinit(mpbarrett* b, size_t size)
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI
void mpbfree(/*@special@*/ mpbarrett* b)
/*@uses b->size, b->modl @*/
/*@releases b->modl @*/
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI
void mpbcopy(mpbarrett* b, const mpbarrett* copy)
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI
void mpbset(mpbarrett* b, size_t size, const mpw* data)
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI /*@unused@*/
void mpbsethex(mpbarrett* b, const char* hex)
/*@modifies b->size, b->modl, b->mu @*/;
/**
*/
BEECRYPTAPI
void mpbsubone(const mpbarrett* b, mpw* result)
/*@modifies result @*/;
/**
*/
BEECRYPTAPI /*@unused@*/
void mpbneg(const mpbarrett* b, const mpw* xdata, mpw* result)
/*@modifies result @*/;
/**
*/
BEECRYPTAPI
void mpbmu_w(mpbarrett* b, /*@out@*/ mpw* wksp)
/*@modifies b->size, b->modl, b->mu, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbrnd_w (const mpbarrett* b, randomGeneratorContext* rc, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
/*@-exportlocal@*/
BEECRYPTAPI
void mpbrndodd_w(const mpbarrett* b, randomGeneratorContext* rc, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/*@=exportlocal@*/
/**
*/
BEECRYPTAPI
void mpbrndinv_w(const mpbarrett* b, randomGeneratorContext* rc, /*@out@*/ mpw* result, /*@out@*/ mpw* inverse, /*@out@*/ mpw* wksp)
/*@modifies result, inverse, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbmod_w(const mpbarrett* b, const mpw* xdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbaddmod_w(const mpbarrett* b, size_t xsize, const mpw* xdata, size_t ysize, const mpw* ydata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI /*@unused@*/
void mpbsubmod_w(const mpbarrett* b, size_t xsize, const mpw* xdata, size_t ysize, const mpw* ydata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbmulmod_w(const mpbarrett* b, size_t xsize, const mpw* xdata, size_t ysize, const mpw* ydata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbsqrmod_w(const mpbarrett* b, size_t xsize, const mpw* xdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI
void mpbpowmod_w(const mpbarrett* b, size_t xsize, const mpw* xdata, size_t psize, const mpw* pdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
/*@-exportlocal@*/
BEECRYPTAPI
void mpbpowmodsld_w(const mpbarrett* b, const mpw* slide, size_t psize, const mpw* pdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@globals internalState @*/
/*@modifies result, wksp, internalState @*/;
/*@=exportlocal@*/
/**
*/
BEECRYPTAPI
void mpbtwopowmod_w(const mpbarrett* b, size_t psize, const mpw* pdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
/**
*/
BEECRYPTAPI
int mpbinv_w(const mpbarrett* b, size_t xsize, const mpw* xdata, /*@out@*/ mpw* result, /*@out@*/ mpw* wksp)
/*@modifies result, wksp @*/;
#ifdef NOTYET
/**
* @todo Simultaneous multiple exponentiation, for use in dsa and elgamal
* signature verification.
*/
BEECRYPTAPI /*@unused@*/
void mpbsm2powmod(const mpbarrett* b, const mpw*, const mpw*, const mpw*, const mpw*);
/**
*/
BEECRYPTAPI /*@unused@*/
void mpbsm3powmod(const mpbarrett* b, const mpw*, const mpw*, const mpw*, const mpw*, const mpw*, const mpw*);
#endif /* NOTYET */
/**
*/
BEECRYPTAPI /*@unused@*/
int mpbpprime_w(const mpbarrett* b, randomGeneratorContext* rc, int t, /*@out@*/ mpw* wksp)
/*@modifies wksp @*/;
/**
* @note Takes mpnumber as parameter.
*/
BEECRYPTAPI
void mpbnrnd(const mpbarrett* b, randomGeneratorContext* rc, mpnumber* result)
/*@modifies result @*/;
/**
* @note Takes mpnumber as parameter.
*/
BEECRYPTAPI /*@unused@*/
void mpbnmulmod(const mpbarrett* b, const mpnumber* x, const mpnumber* y, mpnumber* result)
/*@modifies result @*/;
/**
* @note Takes mpnumber as parameter.
*/
BEECRYPTAPI /*@unused@*/
void mpbnsqrmod(const mpbarrett* b, const mpnumber* x, mpnumber* result)
/*@modifies result @*/;
/**
* @note Takes mpnumber as parameter.
*/
BEECRYPTAPI
void mpbnpowmod (const mpbarrett* b, const mpnumber* x, const mpnumber* pow, mpnumber* y)
/*@modifies y @*/;
/**
* @note Takes mpnumber as parameter.
*/
BEECRYPTAPI /*@unused@*/
void mpbnpowmodsld(const mpbarrett* b, const mpw* slide, const mpnumber* pow, mpnumber* y)
/*@modifies y @*/;
#ifdef __cplusplus
}
#endif
#endif
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