diff options
Diffstat (limited to 'src/crypto/ec/internal.h')
| -rw-r--r-- | src/crypto/ec/internal.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/crypto/ec/internal.h b/src/crypto/ec/internal.h index 71062c1..89d86fd 100644 --- a/src/crypto/ec/internal.h +++ b/src/crypto/ec/internal.h @@ -200,6 +200,7 @@ struct ec_group_st { int curve_name; /* optional NID for named curve */ struct ec_pre_comp_st *pre_comp; + const BN_MONT_CTX *mont_data; /* data for ECDSA inverse */ /* The following members are handled by the method functions, * even if they appear generic */ @@ -230,6 +231,11 @@ struct ec_point_st { EC_GROUP *ec_group_new(const EC_METHOD *meth); int ec_group_copy(EC_GROUP *dest, const EC_GROUP *src); +/* ec_group_get_mont_data returns a Montgomery context for operations in the + * scalar field of |group|. It may return NULL in the case that |group| is not + * a built-in group. */ +const BN_MONT_CTX *ec_group_get_mont_data(const EC_GROUP *group); + int ec_wNAF_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar, size_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *); @@ -321,6 +327,10 @@ void ec_GFp_nistp_recode_scalar_bits(uint8_t *sign, uint8_t *digit, uint8_t in); const EC_METHOD *EC_GFp_nistp256_method(void); +/* Returns GFp methods using montgomery multiplication, with x86-64 + * optimized P256. See http://eprint.iacr.org/2013/816. */ +const EC_METHOD *EC_GFp_nistz256_method(void); + struct ec_key_st { int version; |