[#ExternalSigner]
= ExternalSigner
:mrdocs:

Enables interaction with an external signing device or service, such as a hardware wallet&period; See doc&sol;external&hyphen;signer&period;md

== Synopsis

Declared in `&lt;external&lowbar;signer&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class ExternalSigner;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:ExternalSigner/2constructor.adoc[`ExternalSigner`]         [.small]#[constructor]#
| Constructs a signer bound to a command, chain, fingerprint and name&period;
| xref:ExternalSigner/DisplayAddress.adoc[`DisplayAddress`] 
| Display address on the device&period; Calls &grave;&lt;command&gt; &hyphen;&hyphen;fingerprint &lt;fingerprint&gt; &hyphen;&hyphen;chain &lt;chain&gt; displayaddress &hyphen;&hyphen;desc &lt;descriptor&gt;&grave;&period;
| xref:ExternalSigner/GetDescriptors.adoc[`GetDescriptors`] 
| Get receive and change Descriptor(s) from device for a given account&period; Calls &grave;&lt;command&gt; &hyphen;&hyphen;fingerprint &lt;fingerprint&gt; &hyphen;&hyphen;chain &lt;chain&gt; getdescriptors &hyphen;&hyphen;account &lt;account&gt;&grave;&period;
| xref:ExternalSigner/SignTransaction.adoc[`SignTransaction`] 
| Sign PartiallySignedTransaction on the device&period; Calls `&lt;command&gt; &hyphen;&hyphen;stdin &hyphen;&hyphen;fingerprint &lt;fingerprint&gt; &hyphen;&hyphen;chain &lt;chain&gt;` and passes the `signtx` command and PSBT via stdin&period;
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:ExternalSigner/Enumerate.adoc[`Enumerate`] 
| Obtain a list of signers&period; Calls `&lt;command&gt; enumerate`&period;
|===


== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:ExternalSigner/m_fingerprint.adoc[`m&lowbar;fingerprint`] 
| Master key fingerprint of the signer
| xref:ExternalSigner/m_name.adoc[`m&lowbar;name`] 
| Name of signer
|===



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