i2d_PKCS7_bio_stream - output PKCS7 structure in BER format

       The prefix "i2d" is arguably wrong because the function outputs BER format.

       Copyright 2008-2016 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                         I2D_PKCS7_BIO_STREAM(3SSL)

i2d_PKCS7_bio_stream() outputs a PKCS7 structure in BER format.

       It is otherwise identical to the function SMIME_write_PKCS7().

       The i2d_PKCS7_bio_stream() function was added in OpenSSL 1.0.0.

       i2d_PKCS7_bio_stream - output PKCS7 structure in BER format

       This function is effectively a version of the d2i_PKCS7_bio() supporting streaming.

i2d_PKCS7_bio_stream() returns 1 for success or 0 for failure.

ERR_get_error(3), PKCS7_sign(3), PKCS7_verify(3), PKCS7_encrypt(3) PKCS7_decrypt(3),
       SMIME_write_PKCS7(3), PEM_write_bio_PKCS7_stream(3)

        #include <openssl/pkcs7.h>

        int i2d_PKCS7_bio_stream(BIO *out, PKCS7 *p7, BIO *data, int flags);