aboutsummaryrefslogtreecommitdiffstats
path: root/mpi/mpiutil.c
diff options
context:
space:
mode:
Diffstat (limited to 'mpi/mpiutil.c')
-rw-r--r--mpi/mpiutil.c409
1 files changed, 0 insertions, 409 deletions
diff --git a/mpi/mpiutil.c b/mpi/mpiutil.c
deleted file mode 100644
index 3c5aee057..000000000
--- a/mpi/mpiutil.c
+++ /dev/null
@@ -1,409 +0,0 @@
-/* mpiutil.ac - Utility functions for MPI
- * Copyright (C) 1998, 2000 Free Software Foundation, Inc.
- *
- * This file is part of GnuPG.
- *
- * GnuPG is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * GnuPG 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
-#include <config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "g10lib.h"
-#include "mpi-internal.h"
-#include "memory.h"
-
-/****************
- * Note: It was a bad idea to use the number of limbs to allocate
- * because on a alpha the limbs are large but we normally need
- * integers of n bits - So we should chnage this to bits (or bytes).
- *
- * But mpi_alloc is used in a lot of places :-)
- */
-MPI
-mpi_alloc( unsigned nlimbs )
-{
- MPI a;
-
- a = g10_xmalloc( sizeof *a );
- a->d = nlimbs? mpi_alloc_limb_space( nlimbs, 0 ) : NULL;
- a->alloced = nlimbs;
- a->nlimbs = 0;
- a->sign = 0;
- a->flags = 0;
- return a;
-}
-
-void
-mpi_m_check( MPI a )
-{
- g10_check_heap(a);
- g10_check_heap(a->d);
-}
-
-MPI
-mpi_alloc_secure( unsigned nlimbs )
-{
- MPI a;
-
- a = g10_xmalloc( sizeof *a );
- a->d = nlimbs? mpi_alloc_limb_space( nlimbs, 1 ) : NULL;
- a->alloced = nlimbs;
- a->flags = 1;
- a->nlimbs = 0;
- a->sign = 0;
- return a;
-}
-
-
-
-mpi_ptr_t
-mpi_alloc_limb_space( unsigned nlimbs, int secure )
-{
- size_t len = nlimbs * sizeof(mpi_limb_t);
- mpi_ptr_t p;
-
- p = secure? g10_xmalloc_secure( len ) : g10_xmalloc( len );
-
- return p;
-}
-
-void
-mpi_free_limb_space( mpi_ptr_t a )
-{
- if( !a )
- return;
- g10_free(a);
-}
-
-
-void
-mpi_assign_limb_space( MPI a, mpi_ptr_t ap, unsigned nlimbs )
-{
- mpi_free_limb_space(a->d);
- a->d = ap;
- a->alloced = nlimbs;
-}
-
-
-
-/****************
- * Resize the array of A to NLIMBS. the additional space is cleared
- * (set to 0) [done by g10_realloc()]
- */
-void
-mpi_resize( MPI a, unsigned nlimbs )
-{
- if( nlimbs <= a->alloced )
- return; /* no need to do it */
- /* Note: a->secure is not used - instead the realloc functions
- * take care of it. Maybe we should drop a->secure completely
- * and rely on a mpi_is_secure function, which would be
- * a wrapper around g10_is_secure
- */
- if( a->d )
- a->d = g10_xrealloc(a->d, nlimbs * sizeof(mpi_limb_t) );
- else /* FIXME: It may not be allocted in secure memory */
- a->d = g10_xcalloc( nlimbs , sizeof(mpi_limb_t) );
- a->alloced = nlimbs;
-}
-
-void
-mpi_clear( MPI a )
-{
- a->nlimbs = 0;
- a->flags = 0;
-}
-
-
-void
-mpi_free( MPI a )
-{
- if( !a )
- return;
- if( a->flags & 4 )
- g10_free( a->d );
- else {
- mpi_free_limb_space(a->d);
- }
- if( a->flags & ~7 )
- log_bug("invalid flag value in mpi\n");
- g10_free(a);
-}
-
-static void
-mpi_set_secure( MPI a )
-{
- mpi_ptr_t ap, bp;
-
- if( (a->flags & 1) )
- return;
- a->flags |= 1;
- ap = a->d;
- if( !a->nlimbs ) {
- assert(!ap);
- return;
- }
- bp = mpi_alloc_limb_space( a->nlimbs, 1 );
- MPN_COPY( bp, ap, a->nlimbs );
- a->d = bp;
- mpi_free_limb_space(ap);
-}
-
-
-MPI
-gcry_mpi_set_opaque( MPI a, void *p, unsigned int nbits )
-{
- if( !a ) {
- a = mpi_alloc(0);
- }
-
- if( a->flags & 4 )
- g10_free( a->d );
- else {
- mpi_free_limb_space(a->d);
- }
-
- a->d = p;
- a->alloced = 0;
- a->nlimbs = 0;
- a->sign = nbits;
- a->flags = 4;
- return a;
-}
-
-
-void *
-gcry_mpi_get_opaque( MPI a, unsigned int *nbits )
-{
- if( !(a->flags & 4) )
- log_bug("mpi_get_opaque on normal mpi\n");
- if( nbits )
- *nbits = a->sign;
- return a->d;
-}
-
-
-/****************
- * Note: This copy function should not interpret the MPI
- * but copy it transparently.
- */
-MPI
-mpi_copy( MPI a )
-{
- int i;
- MPI b;
-
- if( a && (a->flags & 4) ) {
- void *p = g10_is_secure(a->d)? g10_xmalloc_secure( (a->sign+7)/8 )
- : g10_xmalloc( (a->sign+7)/8 );
- memcpy( p, a->d, (a->sign+7)/8 );
- b = gcry_mpi_set_opaque( NULL, p, a->sign );
- }
- else if( a ) {
- b = mpi_is_secure(a)? mpi_alloc_secure( a->nlimbs )
- : mpi_alloc( a->nlimbs );
- b->nlimbs = a->nlimbs;
- b->sign = a->sign;
- b->flags = a->flags;
- for(i=0; i < b->nlimbs; i++ )
- b->d[i] = a->d[i];
- }
- else
- b = NULL;
- return b;
-}
-
-
-/****************
- * This function allocates an MPI which is optimized to hold
- * a value as large as the one given in the arhgument and allocates it
- * with the same flags as A.
- */
-MPI
-mpi_alloc_like( MPI a )
-{
- MPI b;
-
- if( a && (a->flags & 4) ) {
- int n = (a->sign+7)/8;
- void *p = g10_is_secure(a->d)? g10_malloc_secure( n )
- : g10_malloc( n );
- memcpy( p, a->d, n );
- b = gcry_mpi_set_opaque( NULL, p, a->sign );
- }
- else if( a ) {
- b = mpi_is_secure(a)? mpi_alloc_secure( a->nlimbs )
- : mpi_alloc( a->nlimbs );
- b->nlimbs = 0;
- b->sign = 0;
- b->flags = a->flags;
- }
- else
- b = NULL;
- return b;
-}
-
-
-void
-mpi_set( MPI w, MPI u)
-{
- mpi_ptr_t wp, up;
- mpi_size_t usize = u->nlimbs;
- int usign = u->sign;
-
- RESIZE_IF_NEEDED(w, usize);
- wp = w->d;
- up = u->d;
- MPN_COPY( wp, up, usize );
- w->nlimbs = usize;
- w->flags = u->flags;
- w->sign = usign;
-}
-
-
-void
-mpi_set_ui( MPI w, unsigned long u)
-{
- RESIZE_IF_NEEDED(w, 1);
- w->d[0] = u;
- w->nlimbs = u? 1:0;
- w->sign = 0;
- w->flags = 0;
-}
-
-
-MPI
-mpi_alloc_set_ui( unsigned long u)
-{
- MPI w = mpi_alloc(1);
- w->d[0] = u;
- w->nlimbs = u? 1:0;
- w->sign = 0;
- return w;
-}
-
-
-void
-mpi_swap( MPI a, MPI b)
-{
- struct gcry_mpi tmp;
-
- tmp = *a; *a = *b; *b = tmp;
-}
-
-
-GCRY_MPI
-gcry_mpi_new( unsigned int nbits )
-{
- return mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1) / BITS_PER_MPI_LIMB );
-}
-
-
-GCRY_MPI
-gcry_mpi_snew( unsigned int nbits )
-{
- return mpi_alloc_secure( (nbits+BITS_PER_MPI_LIMB-1) / BITS_PER_MPI_LIMB );
-}
-
-void
-gcry_mpi_release( GCRY_MPI a )
-{
- mpi_free( a );
-}
-
-GCRY_MPI
-gcry_mpi_copy( const GCRY_MPI a )
-{
- return mpi_copy( (GCRY_MPI)a );
-}
-
-GCRY_MPI
-gcry_mpi_set( GCRY_MPI w, const GCRY_MPI u )
-{
- if( !w )
- w = mpi_alloc( mpi_get_nlimbs(u) );
- mpi_set( w, (GCRY_MPI)u );
- return w;
-}
-
-GCRY_MPI
-gcry_mpi_set_ui( GCRY_MPI w, unsigned long u )
-{
- if( !w )
- w = mpi_alloc(1);
- mpi_set_ui( w, u );
- return w;
-}
-
-
-int
-gcry_mpi_cmp( const GCRY_MPI u, const GCRY_MPI v )
-{
- return mpi_cmp( (GCRY_MPI)u, (GCRY_MPI)v );
-}
-
-int
-gcry_mpi_cmp_ui( const GCRY_MPI u, unsigned long v )
-{
- return mpi_cmp_ui( (GCRY_MPI)u, v );
-}
-
-
-void
-gcry_mpi_randomize( GCRY_MPI w,
- unsigned int nbits, enum gcry_random_level level )
-{
- char *p = mpi_is_secure(w) ? gcry_random_bytes( (nbits+7)/8, level )
- : gcry_random_bytes_secure( (nbits+7)/8, level );
- mpi_set_buffer( w, p, (nbits+7)/8, 0 );
- g10_free(p);
-}
-
-
-void
-gcry_mpi_set_flag( GCRY_MPI a, enum gcry_mpi_flag flag )
-{
- switch( flag ) {
- case GCRYMPI_FLAG_SECURE: mpi_set_secure(a); break;
- case GCRYMPI_FLAG_OPAQUE:
- default: log_bug("invalid flag value\n");
- }
-}
-
-void
-gcry_mpi_clear_flag( GCRY_MPI a, enum gcry_mpi_flag flag )
-{
- switch( flag ) {
- case GCRYMPI_FLAG_SECURE:
- case GCRYMPI_FLAG_OPAQUE:
- default: log_bug("invalid flag value\n");
- }
-}
-
-int
-gcry_mpi_get_flag( GCRY_MPI a, enum gcry_mpi_flag flag )
-{
- switch( flag ) {
- case GCRYMPI_FLAG_SECURE: return (a->flags & 1);
- case GCRYMPI_FLAG_OPAQUE: return (a->flags & 4);
- default: log_bug("invalid flag value\n");
- }
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-28 15:36:49 +0000