[#ossl_param_st-key]
= xref:ossl_param_st.adoc[ossl&lowbar;param&lowbar;st]::key
:relfileprefix: ../
:mrdocs:

Parameter name string (for example an OSSL&lowbar;PKEY&lowbar;PARAM&lowbar;&ast; key)&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
char const* key;
----


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