diff options
Diffstat (limited to 'crypto/bn/bn_gcd.c')
| -rw-r--r-- | crypto/bn/bn_gcd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/crypto/bn/bn_gcd.c b/crypto/bn/bn_gcd.c index 7496dbc3bd..7649f63fd2 100644 --- a/crypto/bn/bn_gcd.c +++ b/crypto/bn/bn_gcd.c @@ -244,11 +244,12 @@ BIGNUM *BN_mod_inverse(BIGNUM *in, * sign*Y*a == A (mod |n|). */ - if (BN_is_odd(n) && (BN_num_bits(n) <= 400)) + if (BN_is_odd(n) && (BN_num_bits(n) <= (BN_BITS <= 32 ? 450 : 2048))) { /* Binary inversion algorithm; requires odd modulus. * This is faster than the general algorithm if the modulus - * is sufficiently small. */ + * is sufficiently small (about 400 .. 500 bits on 32-bit + * sytems, but much more on 64-bit systems) */ int shift; while (!BN_is_zero(B)) |