[#CMS_AuthEnvelopedData_create_ex]
= CMS_AuthEnvelopedData_create_ex
:mrdocs:

Create an empty CMS AuthEnvelopedData ContentInfo using a library context.

== Synopsis

Declared in `<openssl/cms.h>`

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

== Return Value

New AuthEnvelopedData ContentInfo, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cipher*
| Symmetric AEAD cipher to use (for example AES‐GCM); must encode ASN.1 parameters.
| *libctx*
| Library context for algorithm fetches, or NULL for the default.
| *propq*
| Property query for provider selection, or NULL.
|===


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