[#CExtPubKey-id_key_fingerprint]
= xref:CExtPubKey.adoc[CExtPubKey]::id&lowbar;key&lowbar;fingerprint
:relfileprefix: ../
:mrdocs:

Compute the fingerprint of this key&apos;s own public key&period;

== Synopsis

Declared in `&lt;pubkey&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:KeyFingerprint.adoc[KeyFingerprint]
id&lowbar;key&lowbar;fingerprint() const;
----

== Return Value

The 4&hyphen;byte fingerprint of this key&apos;s public key&period;


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