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