[#private_key_st-key_length]
= xref:private_key_st.adoc[private&lowbar;key&lowbar;st]::key&lowbar;length
:relfileprefix: ../
:mrdocs:

Length in bytes of the symmetric key held in `key&lowbar;data&period;`

== Synopsis

Declared in `&lt;openssl&sol;x509&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int key&lowbar;length;
----


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