[#PKCS7_new_ex]
= PKCS7_new_ex
:mrdocs:

Allocate an empty PKCS#7 structure with an explicit library context and property query.

== Synopsis

Declared in `<openssl/pkcs7.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:PKCS7.adoc[PKCS7]*
PKCS7_new_ex(
    xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]* libctx,
    char const* propq);
----

== Return Value

New PKCS7, or NULL on allocation failure; free with PKCS7_free.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *libctx*
| Library context for algorithm fetches, or NULL for the default.
| *propq*
| Property query for algorithm fetches, or NULL.
|===


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