diff options
Diffstat (limited to 'common/rsa.c')
| -rw-r--r-- | common/rsa.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/common/rsa.c b/common/rsa.c index e4e85c3374..3d8518e9ef 100644 --- a/common/rsa.c +++ b/common/rsa.c @@ -50,14 +50,14 @@ static void mont_mul_add(const struct rsa_public_key *key, const uint32_t a, const uint32_t *b) { - uint64_t A = (uint64_t)a * b[0] + c[0]; + uint64_t A = mula32(a, b[0], c[0]); uint32_t d0 = (uint32_t)A * key->n0inv; - uint64_t B = (uint64_t)d0 * key->n[0] + (uint32_t)A; + uint64_t B = mula32(d0, key->n[0], A); uint32_t i; for (i = 1; i < RSANUMWORDS; ++i) { - A = (A >> 32) + (uint64_t)a * b[i] + c[i]; - B = (B >> 32) + (uint64_t)d0 * key->n[i] + (uint32_t)A; + A = (A >> 32) + mula32(a, b[i], c[i]); + B = (B >> 32) + mula32(d0, key->n[i], A); c[i - 1] = (uint32_t)B; } @@ -78,11 +78,11 @@ static void mont_mul_add_0(const struct rsa_public_key *key, const uint32_t *b) { uint32_t d0 = c[0] * key->n0inv; - uint64_t B = (uint64_t)d0 * key->n[0] + c[0]; + uint64_t B = mula32(d0, key->n[0], c[0]); uint32_t i; for (i = 1; i < RSANUMWORDS; ++i) { - B = (B >> 32) + (uint64_t)d0 * key->n[i] + c[i]; + B = (B >> 32) + mula32(d0, key->n[i], c[i]); c[i - 1] = (uint32_t)B; } |