[#private_key_st-key_length]
= xref:private_key_st.adoc[private_key_st]::key_length
:relfileprefix: ../
:mrdocs:

Length in bytes of the symmetric key held in `key_data.`

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int key_length;
----


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