security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-07-03 22:56:33 +02:00
Code Activity

Output armor works, RSA keygen works.

Browse source
This commit is contained in:
Werner Koch 1997-11-19 13:12:23 +00:00
parent 5393dd53c5
commit 25c8f1a3d7
21 changed files with 395 additions and 115 deletions
Download patch file Download diff file Expand all files Collapse all files

49
mpi/mpi-add.c
View file

@ -68,7 +68,7 @@ mpi_add_ui(MPI w, MPI u, unsigned long v )
else {
mpihelp_sub_1(wp, up, usize, v);
/* Size can decrease with at most one limb. */
wsize = (usize - (wp[usize-1]? 0:1));
wsize = usize - (wp[usize-1]==0);
wsign = 1;
}
}
@ -85,27 +85,30 @@ mpi_add(MPI w, MPI u, MPI v)
mpi_size_t usize, vsize, wsize;
int usign, vsign, wsign;
usize = u->nlimbs;
vsize = v->nlimbs;
usign = u->sign;
vsign = v->sign;
if( usize < vsize ) { /* Swap U and V. */
{ MPI t; t = u; u = v; v = t; }
{ mpi_size_t t = usize; usize = vsize; vsize = t; }
{ int t = usign; usign = vsign; vsign = t; }
if( u->nlimbs < v->nlimbs ) { /* Swap U and V. */
usize = v->nlimbs;
usign = v->sign;
vsize = u->nlimbs;
vsign = u->sign;
wsize = usize + 1;
RESIZE_IF_NEEDED(w, wsize);
/* These must be after realloc (u or v may be the same as w). */
up = v->d;
vp = u->d;
}
else {
usize = u->nlimbs;
usign = u->sign;
vsize = v->nlimbs;
vsign = v->sign;
wsize = usize + 1;
RESIZE_IF_NEEDED(w, wsize);
/* These must be after realloc (u or v may be the same as w). */
up = u->d;
vp = v->d;
}
/* If not space for w (and possible carry), increase space. */
wsize = usize + 1;
if( w->alloced < wsize )
mpi_resize(w, wsize);
wsign = 0;
/* These must be after realloc (u or v may be the same as w). */
up = u->d;
vp = v->d;
wp = w->d;
wsign = 0;
if( !vsize ) { /* simple */
MPN_COPY(wp, up, usize );
@ -140,7 +143,7 @@ mpi_add(MPI w, MPI u, MPI v)
wp[usize] = cy;
wsize = usize + cy;
if( usign )
wsize = 1;
wsign = 1;
}
w->nlimbs = wsize;
@ -193,7 +196,7 @@ mpi_sub_ui(MPI w, MPI u, unsigned long v )
else {
mpihelp_sub_1(wp, up, usize, v);
/* Size can decrease with at most one limb. */
wsize = (usize - (wp[usize-1]? 1:0));
wsize = usize - (wp[usize-1]==0);
}
}
@ -204,7 +207,7 @@ mpi_sub_ui(MPI w, MPI u, unsigned long v )
void
mpi_sub(MPI w, MPI u, MPI v)
{
if( w == v ) {
if( 1 || w == v ) {
MPI vv = mpi_copy(v);
vv->sign = !vv->sign;
mpi_add( w, u, vv );