EVP_CIPHER_CTX_get_algor, EVP_CIPHER_CTX_get_algor_params, EVP_CIPHER_CTX_set_algor_params,

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       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>.

3.5.0                                              2025-06-04                       EVP_PKEY_CTX_GET_ALGOR(3SSL)

       In the description here and the "SYNOPSIS" above, TYPE is used as a placeholder for any EVP operation
       type.

       EVP_TYPE_CTX_get_algor() attempts to retrieve a complete AlgorithmIdentifier from the EVP_TYPE
       implementation, and populates *alg with it.  If alg is NULL, calling this function will serve to see if
       calling this function is supported at all by the EVP_TYPE implementation.  If *alg is NULL, space will be
       allocated automatically, and assigned to *alg.

       EVP_TYPE_CTX_get_algor_params() attempts to retrieve the parameters part of an AlgorithmIdentifier from
       the EVP_TYPE implementation, and populates alg-parameters> with it.  If alg is NULL, calling this
       function will serve to see if calling this function is supported at all by the EVP_TYPE implementation.
       If alg->parameters is NULL, space will be allocated automatically, and assigned to  alg->parameters.  If
       alg->parameters is not NULL, its previous contents will be overwritten with the retrieved
       AlgorithmIdentifier parameters.  Beware!

       EVP_TYPE_CTX_set_algor_params() attempts to pass alg->parameters to the EVP_TYPE implementation.  If alg
       is NULL, calling this function will serve to see if calling this function is supported at all by the
       EVP_TYPE implementation.

       These functions were added in OpenSSL 3.4.

       EVP_CIPHER_CTX_get_algor, EVP_CIPHER_CTX_get_algor_params, EVP_CIPHER_CTX_set_algor_params,
       EVP_PKEY_CTX_get_algor, EVP_PKEY_CTX_get_algor_params, EVP_PKEY_CTX_set_algor_params - pass
       AlgorithmIdentifier and its params to/from algorithm implementations

       All functions return 1 for success, and 0 or a negative number if an error occurs.  In particular, -2 is
       returned when the function isn't supported by the EVP_TYPE implementation.

        int EVP_TYPE_CTX_get_algor(EVP_TYPE_CTX *ctx, X509_ALGOR **alg);
        int EVP_TYPE_CTX_get_algor_params(EVP_TYPE_CTX *ctx, X509_ALGOR *alg);
        int EVP_TYPE_CTX_set_algor_params(EVP_TYPE_CTX *ctx, const X509_ALGOR *alg);