diff options
| -rw-r--r-- | networking/tls_sp_c32.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/networking/tls_sp_c32.c b/networking/tls_sp_c32.c index b3f7888..3291b55 100644 --- a/networking/tls_sp_c32.c +++ b/networking/tls_sp_c32.c @@ -865,6 +865,8 @@ static int sp_256_mul_add_8(sp_digit* r /*, const sp_digit* a, sp_digit b*/) } /* Reduce the number back to 256 bits using Montgomery reduction. + * Note: the result is NOT guaranteed to be less than p256_mod! + * (it is only guaranteed to fit into 256 bits). * * a Double-wide number to reduce in place. * m The single precision number representing the modulus. @@ -1276,7 +1278,7 @@ static void sp_256_ecc_mulmod_8(sp_point* r, const sp_point* g, const sp_digit* if (map) sp_256_map_8(r, &t[0]); else - memcpy(r, &t[0], sizeof(sp_point)); + *r = t[0]; /* struct copy */ memset(t, 0, sizeof(t)); //paranoia } |