EVP_SIGNATURE_fetch, EVP_SIGNATURE_free, EVP_SIGNATURE_up_ref, EVP_SIGNATURE_number, EVP_SIGNATURE_is_a, EVP_SIGNATURE_provider, EVP_SIGNATURE_do_all_provided, EVP_SIGNATURE_names_do_all - Functions to manage EVP_SIGNATURE algorithm objects
#include <openssl/evp.h>
EVP_SIGNATURE *EVP_SIGNATURE_fetch(OPENSSL_CTX *ctx, const char *algorithm,
const char *properties);
void EVP_SIGNATURE_free(EVP_SIGNATURE *signature);
int EVP_SIGNATURE_up_ref(EVP_SIGNATURE *signature);
int EVP_SIGNATURE_number(const EVP_SIGNATURE *signature);
int EVP_SIGNATURE_is_a(const EVP_SIGNATURE *signature, const char *name);
OSSL_PROVIDER *EVP_SIGNATURE_provider(const EVP_SIGNATURE *signature);
void EVP_SIGNATURE_do_all_provided(OPENSSL_CTX *libctx,
void (*fn)(EVP_SIGNATURE *signature,
void *arg),
void *arg);
void EVP_SIGNATURE_names_do_all(const EVP_SIGNATURE *signature,
void (*fn)(const char *name, void *data),
void *data);EVP_SIGNATURE_fetch() fetches the implementation for the given algorithm from any provider offering it, within the criteria given by the properties. The algorithm will be one offering functions for performing signature related tasks such as signing and verifying. See RETURN VALUES
EVP_SIGNATURE_fetch() returns a pointer to an EVP_SIGNATURE for success or NULL for failure. EVP_SIGNATURE_up_ref() returns 1 for success or 0 otherwise. The functions described here were added in OpenSSL 3.0. Copyright 2019 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.SEE ALSO
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