diff options
| -rw-r--r-- | libtommath/bn_mp_mul.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libtommath/bn_mp_mul.c b/libtommath/bn_mp_mul.c index 561913a..b00334d 100644 --- a/libtommath/bn_mp_mul.c +++ b/libtommath/bn_mp_mul.c @@ -12,7 +12,9 @@ mp_err mp_mul(const mp_int *a, const mp_int *b, mp_int *c) digs = a->used + b->used + 1; mp_sign neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG; - if (MP_HAS(S_MP_BALANCE_MUL) && + if (a == b) { + return mp_sqr(a,c); + } else if (MP_HAS(S_MP_BALANCE_MUL) && /* Check sizes. The smaller one needs to be larger than the Karatsuba cut-off. * The bigger one needs to be at least about one MP_KARATSUBA_MUL_CUTOFF bigger * to make some sense, but it depends on architecture, OS, position of the |