[#FillableSigningProvider-HaveKey]
= xref:FillableSigningProvider.adoc[FillableSigningProvider]::HaveKey
:relfileprefix: ../
:mrdocs:

Report whether a private key with the given id is known&period;

== Synopsis

Declared in `&lt;script&sol;signingprovider&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
HaveKey(xref:CKeyID.adoc[CKeyID] const& address) const override;
----

== Return Value

True if the private key is known&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *address*
| The key id to check for&period;
|===


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