diff options
| author | Bodo Möller <bodo@openssl.org> | 2005-05-16 01:43:31 +0000 |
|---|---|---|
| committer | Bodo Möller <bodo@openssl.org> | 2005-05-16 01:43:31 +0000 |
| commit | 46a643763de6d8e39ecf6f76fa79b4d04885aa59 (patch) | |
| tree | e1f3cfc98bddba797b5300977dbf3223f008fc4a /crypto/bn/expspeed.c | |
| parent | 92c44685724c0d993ea8920577680f3c0a1d79c8 (diff) | |
Implement fixed-window exponentiation to mitigate hyper-threading
timing attacks.
BN_FLG_EXP_CONSTTIME requests this algorithm, and this done by default for
RSA/DSA/DH private key computations unless
RSA_FLAG_NO_EXP_CONSTTIME/DSA_FLAG_NO_EXP_CONSTTIME/
DH_FLAG_NO_EXP_CONSTTIME is set.
Submitted by: Matthew D Wood
Reviewed by: Bodo Moeller
Diffstat (limited to 'crypto/bn/expspeed.c')
| -rw-r--r-- | crypto/bn/expspeed.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/bn/expspeed.c b/crypto/bn/expspeed.c index 07a1bcf51c..4d5f221f33 100644 --- a/crypto/bn/expspeed.c +++ b/crypto/bn/expspeed.c @@ -321,7 +321,7 @@ void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx) #else /* TEST_SQRT */ "2*sqrt [prime == %d (mod 64)] %4d %4d mod %4d" #endif - " -> %8.3fms %5.1f (%ld)\n", + " -> %8.6fms %5.1f (%ld)\n", #ifdef TEST_SQRT P_MOD_64, #endif |