NAME

       EVP_PKEY_CTX_get0_libctx, EVP_PKEY_CTX_get0_propq, EVP_PKEY_CTX_get0_provider - functions
       for getting diverse information from an EVP_PKEY_CTX

SYNOPSIS

        #include <openssl/evp.h>

        OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx);
        const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx);
        const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx);

DESCRIPTION

       EVP_PKEY_CTX_get0_libctx() and EVP_PKEY_CTX_get0_propq() obtain the OSSL_LIB_CTX and
       property query string values respectively that were associated with the EVP_PKEY_CTX when
       it was constructed.

       EVP_PKEY_CTX_get0_provider() returns the provider associated with the ongoing EVP_PKEY_CTX
       operation.  If the operation is performed by en ENGINE, this function returns NULL.

RETURN VALUES

       EVP_PKEY_CTX_get0_libctx() and EVP_PKEY_CTX_get0_propq() functions return the OSSL_LIB_CTX
       and property query string associated with the EVP_PKEY_CTX or NULL if they are not set.
       The returned values should not be freed by the caller.

       EVP_PKEY_CTX_get0_provider() returns a provider if an operation performed by a provider is
       ongoing, otherwise NULL.

SEE ALSO

       EVP_PKEY_CTX_new(3)

HISTORY

       All functions were added in OpenSSL 3.0.

COPYRIGHT

       Copyright 2020-2021 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>.