CMS_data_create_ex, CMS_data_create - Create CMS Data object

       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>.

3.5.0                                              2025-06-04                              CMS_DATA_CREATE(3SSL)

CMS_data_create_ex() creates a CMS_ContentInfo structure with a type NID_pkcs7_data. The data is supplied
       via the in BIO.  The library context libctx and the property query propq are used when retrieving
       algorithms from providers. The flags field supports the CMS_STREAM flag. Internally CMS_final() is called
       unless CMS_STREAM is specified.

       The CMS_ContentInfo structure can be freed using CMS_ContentInfo_free(3).

       CMS_data_create() is similar to CMS_data_create_ex() but uses default values of NULL for the library
       context libctx and the property query propq.

       The CMS_data_create_ex() method was added in OpenSSL 3.0.

       CMS_data_create_ex, CMS_data_create - Create CMS Data object

       If the allocation fails, CMS_data_create_ex() and CMS_data_create() return NULL and set an error code
       that can be obtained by ERR_get_error(3).  Otherwise they return a pointer to the newly allocated
       structure.

ERR_get_error(3), CMS_final(3)

        #include <openssl/cms.h>

        CMS_ContentInfo *CMS_data_create_ex(BIO *in, unsigned int flags,
                                            OSSL_LIB_CTX *libctx, const char *propq);
        CMS_ContentInfo *CMS_data_create(BIO *in, unsigned int flags);