diff options
Diffstat (limited to 'pyecsca/codegen/templates/mult_rtl.c')
| -rw-r--r-- | pyecsca/codegen/templates/mult_rtl.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/pyecsca/codegen/templates/mult_rtl.c b/pyecsca/codegen/templates/mult_rtl.c index 71949b4..119ee7e 100644 --- a/pyecsca/codegen/templates/mult_rtl.c +++ b/pyecsca/codegen/templates/mult_rtl.c @@ -5,6 +5,12 @@ void scalar_mult_inner(bn_t *scalar, point_t *point, curve_t *curve, point_t *ou point_t *q = point_copy(point); point_t *r = point_copy(curve->neutral); + {% if scalarmult.complete %} + size_t bits = bn_bit_length(&curve->n); + {% else %} + size_t bits = bn_bit_length(scalar); + {% endif %} + {%- if scalarmult.always %} point_t *dummy = point_new(); {%- endif %} @@ -12,7 +18,7 @@ void scalar_mult_inner(bn_t *scalar, point_t *point, curve_t *curve, point_t *ou bn_init(©); bn_copy(scalar, ©); - while (!bn_is_0(©)) { + for (int i = 0; i < bits; i++) { if (bn_get_bit(©, 0) == 1) { point_accumulate(r, q, curve, r); } else { |