PEM\_WRITE\_BIO\_CMS\_STREAM(3ossl) OpenSSL PEM\_WRITE\_BIO\_CMS\_STREAM(3ossl)

# [NAME](#NAME)

PEM\_write\_bio\_CMS\_stream - output CMS\_ContentInfo structure in PEM format

# [SYNOPSIS](#SYNOPSIS)

```
 #include <openssl/cms.h>
 int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *data, int flags);
```

# [DESCRIPTION](#DESCRIPTION)

**PEM\_write\_bio\_CMS\_stream()** outputs a CMS\_ContentInfo structure in PEM format.

It is otherwise identical to the function **SMIME\_write\_CMS()**.

# [NOTES](#NOTES)

This function is effectively a version of the **PEM\_write\_bio\_CMS()** supporting streaming.

# [RETURN VALUES](#RETURN_VALUES)

**PEM\_write\_bio\_CMS\_stream()** returns 1 for success or 0 for failure.

# [SEE ALSO](#SEE_ALSO)

[**ERR\_get\_error**(3)](/man/os/openssl/ERR_get_error.3), [**CMS\_sign**(3)](/man/os/openssl/CMS_sign.3), [**CMS\_verify**(3)](/man/os/openssl/CMS_verify.3), [**CMS\_encrypt**(3)](/man/os/openssl/CMS_encrypt.3) [**CMS\_decrypt**(3)](/man/os/openssl/CMS_decrypt.3), [**PEM\_write**(3)](/man/os/openssl/PEM_write.3), [**SMIME\_write\_CMS**(3)](/man/os/openssl/SMIME_write_CMS.3), [**i2d\_CMS\_bio\_stream**(3)](/man/os/openssl/i2d_CMS_bio_stream.3)

# [HISTORY](#HISTORY)

The **PEM\_write\_bio\_CMS\_stream()** function was added in OpenSSL 1.0.0.

# [COPYRIGHT](#COPYRIGHT)

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 &lt;https://www.openssl.org/source/license.html&gt;.

2026-09-29 3.6.5

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Document: PEM_write_bio_CMS_stream(3ossl) from openssl 3.6.5-r4 (Chainguard OS)
Source: https://github.com/openssl/openssl