| /* |
| * Copyright 2018-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| /* Internal EC functions for other submodules: not for application use */ |
| |
| #ifndef OSSL_CRYPTO_EC_H |
| # define OSSL_CRYPTO_EC_H |
| # pragma once |
| |
| # include <openssl/opensslconf.h> |
| # include <openssl/evp.h> |
| |
| int ossl_ec_curve_name2nid(const char *name); |
| const char *ossl_ec_curve_nid2nist_int(int nid); |
| int ossl_ec_curve_nist2nid_int(const char *name); |
| int evp_pkey_ctx_set_ec_param_enc_prov(EVP_PKEY_CTX *ctx, int param_enc); |
| |
| # ifndef OPENSSL_NO_EC |
| # include <openssl/core.h> |
| # include <openssl/ec.h> |
| # include "crypto/types.h" |
| |
| /*- |
| * Computes the multiplicative inverse of x in the range |
| * [1,EC_GROUP::order), where EC_GROUP::order is the cardinality of the |
| * subgroup generated by the generator G: |
| * |
| * res := x^(-1) (mod EC_GROUP::order). |
| * |
| * This function expects the following two conditions to hold: |
| * - the EC_GROUP order is prime, and |
| * - x is included in the range [1, EC_GROUP::order). |
| * |
| * This function returns 1 on success, 0 on error. |
| * |
| * If the EC_GROUP order is even, this function explicitly returns 0 as |
| * an error. |
| * In case any of the two conditions stated above is not satisfied, |
| * the correctness of its output is not guaranteed, even if the return |
| * value could still be 1 (as primality testing and a conditional modular |
| * reduction round on the input can be omitted by the underlying |
| * implementations for better SCA properties on regular input values). |
| */ |
| __owur int ossl_ec_group_do_inverse_ord(const EC_GROUP *group, BIGNUM *res, |
| const BIGNUM *x, BN_CTX *ctx); |
| |
| /*- |
| * ECDH Key Derivation Function as defined in ANSI X9.63 |
| */ |
| int ossl_ecdh_kdf_X9_63(unsigned char *out, size_t outlen, |
| const unsigned char *Z, size_t Zlen, |
| const unsigned char *sinfo, size_t sinfolen, |
| const EVP_MD *md, OSSL_LIB_CTX *libctx, |
| const char *propq); |
| |
| int ossl_ec_key_public_check(const EC_KEY *eckey, BN_CTX *ctx); |
| int ossl_ec_key_public_check_quick(const EC_KEY *eckey, BN_CTX *ctx); |
| int ossl_ec_key_private_check(const EC_KEY *eckey); |
| int ossl_ec_key_pairwise_check(const EC_KEY *eckey, BN_CTX *ctx); |
| OSSL_LIB_CTX *ossl_ec_key_get_libctx(const EC_KEY *eckey); |
| const char *ossl_ec_key_get0_propq(const EC_KEY *eckey); |
| void ossl_ec_key_set0_libctx(EC_KEY *key, OSSL_LIB_CTX *libctx); |
| |
| /* Backend support */ |
| int ossl_ec_group_todata(const EC_GROUP *group, OSSL_PARAM_BLD *tmpl, |
| OSSL_PARAM params[], OSSL_LIB_CTX *libctx, |
| const char *propq, |
| BN_CTX *bnctx, unsigned char **genbuf); |
| int ossl_ec_group_fromdata(EC_KEY *ec, const OSSL_PARAM params[]); |
| int ossl_ec_group_set_params(EC_GROUP *group, const OSSL_PARAM params[]); |
| int ossl_ec_key_fromdata(EC_KEY *ecx, const OSSL_PARAM params[], |
| int include_private); |
| int ossl_ec_key_otherparams_fromdata(EC_KEY *ec, const OSSL_PARAM params[]); |
| int ossl_ec_key_is_foreign(const EC_KEY *ec); |
| EC_KEY *ossl_ec_key_dup(const EC_KEY *key, int selection); |
| int ossl_x509_algor_is_sm2(const X509_ALGOR *palg); |
| EC_KEY *ossl_ec_key_param_from_x509_algor(const X509_ALGOR *palg, |
| OSSL_LIB_CTX *libctx, |
| const char *propq); |
| EC_KEY *ossl_ec_key_from_pkcs8(const PKCS8_PRIV_KEY_INFO *p8inf, |
| OSSL_LIB_CTX *libctx, const char *propq); |
| |
| int ossl_ec_set_ecdh_cofactor_mode(EC_KEY *ec, int mode); |
| int ossl_ec_encoding_name2id(const char *name); |
| int ossl_ec_encoding_param2id(const OSSL_PARAM *p, int *id); |
| int ossl_ec_pt_format_name2id(const char *name); |
| int ossl_ec_pt_format_param2id(const OSSL_PARAM *p, int *id); |
| char *ossl_ec_pt_format_id2name(int id); |
| |
| char *ossl_ec_check_group_type_id2name(int flags); |
| int ossl_ec_set_check_group_type_from_name(EC_KEY *ec, const char *name); |
| |
| # endif /* OPENSSL_NO_EC */ |
| #endif |