[#CKey-size-09]
= xref:CKey.adoc[CKey]::size
:relfileprefix: ../
:mrdocs:

Number of key bytes, or 0 if the key is invalid&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unsigned int
size() const;
----

== Return Value

The size in bytes of the stored key material&period;


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