[#CMS_AuthEnvelopedData_create]
= CMS_AuthEnvelopedData_create
:mrdocs:

Create an empty CMS AuthEnvelopedData ContentInfo for an AEAD cipher.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CMS_ContentInfo.adoc[CMS_ContentInfo]*
CMS_AuthEnvelopedData_create(xref:EVP_CIPHER-07.adoc[EVP_CIPHER] const* cipher);
----

== Return Value

New AuthEnvelopedData ContentInfo, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cipher*
| Symmetric AEAD cipher to use (currently AES‐GCM variants); must encode ASN.1 parameters.
|===


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