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#include "mult.h"
#include "point.h"
static void scalar_mult_inner(bn_t *scalar, point_t *point, curve_t *curve, point_t *out) {
point_t *q = point_copy(curve->neutral);
point_t *points[{{ 2 ** (scalarmult.width - 1) }}];
point_t *current = point_copy(point);
point_t *dbl = point_new();
point_dbl(current, curve, dbl);
for (long i = 0; i < {{ 2 ** (scalarmult.width - 1) }}; i++) {
points[i] = point_copy(current);
if (i + 1 < {{ 2 ** (scalarmult.width - 1) }}) {
point_add(current, dbl, curve, current);
}
}
point_free(current);
point_free(dbl);
{% if scalarmult.recoding_direction == ProcessingDirection.LTR %}
wsliding_t *ws = bn_wsliding_ltr(scalar, {{ scalarmult.width }});
{% elif scalarmult.recoding_direction == ProcessingDirection.RTL %}
wsliding_t *ws = bn_wsliding_rtl(scalar, {{ scalarmult.width }});
{% endif %}
for (long i = 0; i < ws->length; i++) {
point_dbl(q, curve, q);
uint8_t val = ws->data[i];
if (val) {
point_accumulate(q, points[(val - 1) / 2], curve, q);
}
}
{%- if "scl" in scalarmult.formulas %}
point_scl(q, curve, q);
{%- endif %}
point_set(q, out);
bn_wsliding_clear(ws);
for (long i = 0; i < {{ 2 ** (scalarmult.width - 1) }}; i++) {
point_free(points[i]);
}
point_free(q);
}
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