mirror of git://git.gnupg.org/gnupg.git
149 lines
4.8 KiB
C
149 lines
4.8 KiB
C
/* mpi.h - Multi Precision Integers
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* Copyright (c) 1997 by Werner Koch (dd9jn)
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*
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* This file is part of G10.
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*
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* G10 is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* G10 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef G10_MPI_H
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#define G10_MPI_H
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#include <stdio.h>
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#include "iobuf.h"
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#include "types.h"
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#include "memory.h"
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#define DBG_MPI mpi_debug_mode
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int mpi_debug_mode;
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#if defined(__i386__)
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#define BITS_PER_MPI_LIMB 32
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#define BYTES_PER_MPI_LIMB 4
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#define BYTES_PER_MPI_LIMB2 8
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typedef unsigned long int mpi_limb_t;
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typedef signed long int mpi_limb_signed_t;
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#else
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#error add definions for this machine here
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#endif
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typedef struct mpi_struct {
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int alloced; /* array size (# of allocated limbs) */
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int nlimbs; /* number of valid limbs */
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int sign; /* indicates a negative number */
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int secure; /* array mut be allocated in secure memory space */
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mpi_limb_t *d; /* array with the limbs */
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} *MPI;
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#define MPI_NULL NULL
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#define mpi_get_nlimbs(a) ((a)->nlimbs)
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/*-- mpiutil.c --*/
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#ifdef M_DEBUG
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#define mpi_alloc(n) mpi_debug_alloc((n), M_DBGINFO( __LINE__ ) )
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#define mpi_alloc_secure(n) mpi_debug_alloc_secure((n), M_DBGINFO( __LINE__ ) )
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#define mpi_free(a) mpi_debug_free((a), M_DBGINFO(__LINE__) )
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#define mpi_resize(a,b) mpi_debug_resize((a),(b), M_DBGINFO(__LINE__) )
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#define mpi_copy(a) mpi_debug_copy((a), M_DBGINFO(__LINE__) )
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MPI mpi_debug_alloc( unsigned nlimbs, const char *info );
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MPI mpi_debug_alloc_secure( unsigned nlimbs, const char *info );
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void mpi_debug_free( MPI a, const char *info );
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void mpi_debug_resize( MPI a, unsigned nlimbs, const char *info );
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MPI mpi_debug_copy( MPI a, const char *info );
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#else
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MPI mpi_alloc( unsigned nlimbs );
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MPI mpi_alloc_secure( unsigned nlimbs );
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void mpi_free( MPI a );
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void mpi_resize( MPI a, unsigned nlimbs );
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MPI mpi_copy( MPI a );
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#endif
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void mpi_clear( MPI a );
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void mpi_set( MPI w, MPI u);
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void mpi_set_ui( MPI w, ulong u);
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MPI mpi_alloc_set_ui( unsigned long u);
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void mpi_m_check( MPI a );
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void mpi_swap( MPI a, MPI b);
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/*-- mpicoder.c --*/
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int mpi_encode( IOBUF out, MPI a );
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int mpi_encode_csum( IOBUF out, MPI a, u16 *csum );
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int mpi_write( IOBUF out, byte *a);
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int mpi_write_csum( IOBUF out, byte *a, u16 *csum);
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#ifdef M_DEBUG
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#define mpi_decode(a,b) mpi_debug_decode((a),(b), M_DBGINFO( __LINE__ ) )
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#define mpi_decode_buffer(a) mpi_debug_decode_buffer((a), M_DBGINFO( __LINE__ ) )
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MPI mpi_debug_decode(IOBUF inp, unsigned *nread, const char *info);
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MPI mpi_debug_decode_buffer(byte *buffer, const char *info );
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#else
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MPI mpi_decode(IOBUF inp, unsigned *nread);
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MPI mpi_decode_buffer(byte *buffer );
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#endif
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byte *mpi_read(IOBUF inp, unsigned *ret_nread);
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int mpi_fromstr(MPI val, const char *str);
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int mpi_print( FILE *fp, MPI a, int mode );
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u32 mpi_get_keyid( MPI a, u32 *keyid );
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/*-- mpi-add.c --*/
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void mpi_add_ui(MPI w, MPI u, ulong v );
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void mpi_add(MPI w, MPI u, MPI v);
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void mpi_sub_ui(MPI w, MPI u, ulong v );
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void mpi_sub( MPI w, MPI u, MPI v);
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/*-- mpi-mul.c --*/
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void mpi_mul_ui(MPI w, MPI u, ulong v );
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void mpi_mul_2exp( MPI w, MPI u, ulong cnt);
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void mpi_mul( MPI w, MPI u, MPI v);
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/*-- mpi-div.c --*/
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ulong mpi_fdiv_r_ui( MPI rem, MPI dividend, ulong divisor );
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void mpi_fdiv_r( MPI rem, MPI dividend, MPI divisor );
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void mpi_fdiv_q( MPI quot, MPI dividend, MPI divisor );
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void mpi_fdiv_qr( MPI quot, MPI rem, MPI dividend, MPI divisor );
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void mpi_tdiv_r( MPI rem, MPI num, MPI den);
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void mpi_tdiv_qr( MPI quot, MPI rem, MPI num, MPI den);
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int mpi_divisible_ui(MPI dividend, ulong divisor );
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/*-- mpi-gcd.c --*/
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int mpi_gcd( MPI g, MPI a, MPI b );
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/*-- mpi-pow.c --*/
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void mpi_pow( MPI w, MPI u, MPI v);
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void mpi_powm( MPI res, MPI base, MPI exp, MPI mod);
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/*-- mpi-cmp.c --*/
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int mpi_cmp_ui( MPI u, ulong v );
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int mpi_cmp( MPI u, MPI v );
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/*-- mpi-scan.c --*/
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int mpi_getbyte( MPI a, unsigned index );
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void mpi_putbyte( MPI a, unsigned index, int value );
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/*-- mpi-bit.c --*/
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unsigned mpi_get_nbits( MPI a );
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int mpi_test_bit( MPI a, unsigned n );
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void mpi_set_bit( MPI a, unsigned n );
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void mpi_clear_bit( MPI a, unsigned n );
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void mpi_set_bytes( MPI a, unsigned nbits, byte (*fnc)(int), int opaque );
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void mpi_rshift( MPI x, MPI a, unsigned n );
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/*-- mpi-inv.c --*/
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void mpi_inv_mod( MPI x, MPI u, MPI v );
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#endif /*G10_MPI_H*/
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