[#PKCS7_dup]
= PKCS7&lowbar;dup
:mrdocs:

Deep&hyphen;copy a PKCS&num;7 structure (PKCS7&lowbar;dup)&period;

== Synopsis

Declared in `&lt;openssl&sol;pkcs7&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
extern
xref:PKCS7.adoc[PKCS7]*
PKCS7&lowbar;dup(xref:PKCS7.adoc[PKCS7] const* a);
----

== Return Value

Newly allocated PKCS7 copy, or NULL on failure&semi; free with PKCS7&lowbar;free()&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Source PKCS7 to duplicate&period;
|===


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