[#ESS_SIGNING_CERT_dup]
= ESS_SIGNING_CERT_dup
:mrdocs:

Duplicate a ESS SigningCertificate attribute.

== Synopsis

Declared in `<openssl/ess.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:ESS_SIGNING_CERT-09.adoc[ESS_SIGNING_CERT]*
ESS_SIGNING_CERT_dup(xref:ESS_SIGNING_CERT-09.adoc[ESS_SIGNING_CERT] const* a);
----

== Return Value

Deep copy of `a,` or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Value to copy.
|===


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