+
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+/* method functions in ecp_nistp224.c */
+int ec_GFp_nistp224_group_init(EC_GROUP *group);
+int ec_GFp_nistp224_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+ const BIGNUM *a, const BIGNUM *n,
+ BN_CTX *);
+int ec_GFp_nistp224_point_get_affine_coordinates(const EC_GROUP *group,
+ const EC_POINT *point,
+ BIGNUM *x, BIGNUM *y,
+ BN_CTX *ctx);
+int ec_GFp_nistp224_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[], const BIGNUM *scalars[],
+ BN_CTX *);
+int ec_GFp_nistp224_points_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[],
+ const BIGNUM *scalars[], BN_CTX *ctx);
+int ec_GFp_nistp224_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
+int ec_GFp_nistp224_have_precompute_mult(const EC_GROUP *group);
+
+/* method functions in ecp_nistp256.c */
+int ec_GFp_nistp256_group_init(EC_GROUP *group);
+int ec_GFp_nistp256_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+ const BIGNUM *a, const BIGNUM *n,
+ BN_CTX *);
+int ec_GFp_nistp256_point_get_affine_coordinates(const EC_GROUP *group,
+ const EC_POINT *point,
+ BIGNUM *x, BIGNUM *y,
+ BN_CTX *ctx);
+int ec_GFp_nistp256_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[], const BIGNUM *scalars[],
+ BN_CTX *);
+int ec_GFp_nistp256_points_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[],
+ const BIGNUM *scalars[], BN_CTX *ctx);
+int ec_GFp_nistp256_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
+int ec_GFp_nistp256_have_precompute_mult(const EC_GROUP *group);
+
+/* method functions in ecp_nistp521.c */
+int ec_GFp_nistp521_group_init(EC_GROUP *group);
+int ec_GFp_nistp521_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+ const BIGNUM *a, const BIGNUM *n,
+ BN_CTX *);
+int ec_GFp_nistp521_point_get_affine_coordinates(const EC_GROUP *group,
+ const EC_POINT *point,
+ BIGNUM *x, BIGNUM *y,
+ BN_CTX *ctx);
+int ec_GFp_nistp521_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[], const BIGNUM *scalars[],
+ BN_CTX *);
+int ec_GFp_nistp521_points_mul(const EC_GROUP *group, EC_POINT *r,
+ const BIGNUM *scalar, size_t num,
+ const EC_POINT *points[],
+ const BIGNUM *scalars[], BN_CTX *ctx);
+int ec_GFp_nistp521_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
+int ec_GFp_nistp521_have_precompute_mult(const EC_GROUP *group);
+
+/* utility functions in ecp_nistputil.c */
+void ec_GFp_nistp_points_make_affine_internal(size_t num, void *point_array,
+ size_t felem_size,
+ void *tmp_felems,
+ void (*felem_one) (void *out),
+ int (*felem_is_zero) (const void
+ *in),
+ void (*felem_assign) (void *out,
+ const void
+ *in),
+ void (*felem_square) (void *out,
+ const void
+ *in),
+ void (*felem_mul) (void *out,
+ const void
+ *in1,
+ const void
+ *in2),
+ void (*felem_inv) (void *out,
+ const void
+ *in),
+ void (*felem_contract) (void
+ *out,
+ const
+ void
+ *in));
+void ec_GFp_nistp_recode_scalar_bits(unsigned char *sign,
+ unsigned char *digit, unsigned char in);
+#endif
+int ec_precompute_mont_data(EC_GROUP *);
+
+#ifdef ECP_NISTZ256_ASM
+/** Returns GFp methods using montgomery multiplication, with x86-64 optimized
+ * P256. See http://eprint.iacr.org/2013/816.
+ * \return EC_METHOD object
+ */
+const EC_METHOD *EC_GFp_nistz256_method(void);
+#endif
+
+/* EC_METHOD definitions */
+
+struct ec_key_method_st {
+ const char *name;
+ int32_t flags;
+ int (*init)(EC_KEY *key);
+ void (*finish)(EC_KEY *key);
+ int (*copy)(EC_KEY *dest, const EC_KEY *src);
+ int (*set_group)(EC_KEY *key, const EC_GROUP *grp);
+ int (*set_private)(EC_KEY *key, const BIGNUM *priv_key);
+ int (*set_public)(EC_KEY *key, const EC_POINT *pub_key);
+ int (*keygen)(EC_KEY *key);
+ int (*compute_key)(void *out, size_t outlen, const EC_POINT *pub_key,
+ const EC_KEY *ecdh,
+ void *(*KDF) (const void *in, size_t inlen,
+ void *out, size_t *outlen));
+
+ int (*sign)(int type, const unsigned char *dgst, int dlen, unsigned char
+ *sig, unsigned int *siglen, const BIGNUM *kinv,
+ const BIGNUM *r, EC_KEY *eckey);
+ int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
+ BIGNUM **rp);
+ ECDSA_SIG *(*sign_sig)(const unsigned char *dgst, int dgst_len,
+ const BIGNUM *in_kinv, const BIGNUM *in_r,
+ EC_KEY *eckey);
+
+ int (*verify)(int type, const unsigned char *dgst, int dgst_len,
+ const unsigned char *sigbuf, int sig_len, EC_KEY *eckey);
+ int (*verify_sig)(const unsigned char *dgst, int dgst_len,
+ const ECDSA_SIG *sig, EC_KEY *eckey);
+} /* EC_KEY_METHOD */ ;
+
+#define EC_KEY_METHOD_DYNAMIC 1
+
+int ossl_ec_key_gen(EC_KEY *eckey);
+int ossl_ecdh_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
+ const EC_KEY *ecdh,
+ void *(*KDF) (const void *in, size_t inlen,
+ void *out, size_t *outlen));
+
+struct ECDSA_SIG_st {
+ BIGNUM *r;
+ BIGNUM *s;
+};
+
+int ossl_ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
+ BIGNUM **rp);
+int ossl_ecdsa_sign(int type, const unsigned char *dgst, int dlen,
+ unsigned char *sig, unsigned int *siglen,
+ const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey);
+ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
+ const BIGNUM *in_kinv, const BIGNUM *in_r,
+ EC_KEY *eckey);
+int ossl_ecdsa_verify(int type, const unsigned char *dgst, int dgst_len,
+ const unsigned char *sigbuf, int sig_len, EC_KEY *eckey);
+int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
+ const ECDSA_SIG *sig, EC_KEY *eckey);