NAME

EVP_KEYEXCH_fetch, EVP_KEYEXCH_free, EVP_KEYEXCH_up_ref, EVP_KEYEXCH_provider, EVP_KEYEXCH_is_a, EVP_KEYEXCH_do_all_provided, EVP_KEYEXCH_number, EVP_KEYEXCH_names_do_all - Functions to manage EVP_KEYEXCH algorithm objects

SYNOPSIS

 #include <openssl/evp.h>

 EVP_KEYEXCH *EVP_KEYEXCH_fetch(OPENSSL_CTX *ctx, const char *algorithm,
                                const char *properties);
 void EVP_KEYEXCH_free(EVP_KEYEXCH *exchange);
 int EVP_KEYEXCH_up_ref(EVP_KEYEXCH *exchange);
 OSSL_PROVIDER *EVP_KEYEXCH_provider(const EVP_KEYEXCH *exchange);
 int EVP_KEYEXCH_is_a(const EVP_KEYEXCH *exchange, const char *name);
 int EVP_KEYEXCH_number(const EVP_KEYEXCH *exchange);
 void EVP_KEYEXCH_do_all_provided(OPENSSL_CTX *libctx,
                                  void (*fn)(EVP_KEYEXCH *exchange, void *arg),
                                  void *arg);
 void EVP_KEYEXCH_names_do_all(const EVP_KEYEXCH *exchange,
                               void (*fn)(const char *name, void *data),
                               void *data);

DESCRIPTION

EVP_KEYEXCH_fetch() fetches the key exchange implementation for the given algorithm from any provider offering it, within the criteria given by the properties. See RETURN VALUES

EVP_KEYEXCH_fetch() returns a pointer to a EVP_KEYEXCH for success or NULL for failure.

EVP_KEYEXCH_up_ref() returns 1 for success or 0 otherwise.

EVP_KEYEXCH_is_a() returns 1 of exchange was identifiable, otherwise 0.

EVP_KEYEXCH_number() returns an integer.

SEE ALSO

OSSL_PROVIDER(3)

HISTORY

The functions described here were added in OpenSSL 3.0.

COPYRIGHT

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.