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>.