diff options
| author | Andy Polyakov <appro@openssl.org> | 2017-12-30 15:08:31 +0100 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2018-01-07 21:31:37 +0100 |
| commit | eb7916960bf50f436593abe3d5f2e0592d291017 (patch) | |
| tree | 3ad36bd09f212dccca8bb59fdedb223cdab8786e /crypto/ec/ec_lcl.h | |
| parent | 617b49db14fa4c1211bfc5d0e88294d0f159c9a9 (diff) | |
ec/ecp_nistz256.c: improve ECDSA sign by 30-40%.
This is based on RT#3810, which added dedicated modular inversion.
ECDSA verify results improves as well, but not as much.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5001)
Diffstat (limited to 'crypto/ec/ec_lcl.h')
| -rw-r--r-- | crypto/ec/ec_lcl.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/crypto/ec/ec_lcl.h b/crypto/ec/ec_lcl.h index 6cc0190aa7..540aa534e7 100644 --- a/crypto/ec/ec_lcl.h +++ b/crypto/ec/ec_lcl.h @@ -155,6 +155,9 @@ struct ec_method_st { /* custom ECDH operation */ int (*ecdh_compute_key)(unsigned char **pout, size_t *poutlen, const EC_POINT *pub_key, const EC_KEY *ecdh); + /* Inverse modulo order */ + int (*field_inverse_mod_ord)(const EC_GROUP *, BIGNUM *r, BIGNUM *x, + BN_CTX *ctx); }; /* @@ -520,7 +523,6 @@ void ec_GFp_nistp_points_make_affine_internal(size_t num, void *point_array, void ec_GFp_nistp_recode_scalar_bits(unsigned char *sign, unsigned char *digit, unsigned char in); #endif -int ec_precompute_mont_data(EC_GROUP *); int ec_group_simple_order_bits(const EC_GROUP *group); #ifdef ECP_NISTZ256_ASM @@ -604,3 +606,6 @@ int X25519(uint8_t out_shared_key[32], const uint8_t private_key[32], const uint8_t peer_public_value[32]); void X25519_public_from_private(uint8_t out_public_value[32], const uint8_t private_key[32]); + +int EC_GROUP_do_inverse_ord(const EC_GROUP *group, BIGNUM *res, + BIGNUM *x, BN_CTX *ctx); |