[#ASN1_STRING_dup]
= ASN1_STRING_dup
:mrdocs:

Deep‐copy an ASN.1 string (type, data, and flags).

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:ASN1_STRING.adoc[ASN1_STRING]*
ASN1_STRING_dup(xref:ASN1_STRING.adoc[ASN1_STRING] const* a);
----

== Return Value

Newly allocated ASN1_STRING copy, or NULL on error; free with ASN1_STRING_free().

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Source string to duplicate.
|===


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