[#EVP_KDF_gettable_ctx_params]
= EVP&lowbar;KDF&lowbar;gettable&lowbar;ctx&lowbar;params
:mrdocs:

Return OSSL&lowbar;PARAM descriptors that can be retrieved from an EVP&lowbar;KDF&lowbar;CTX&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_PARAM.adoc[OSSL&lowbar;PARAM] const*
EVP&lowbar;KDF&lowbar;gettable&lowbar;ctx&lowbar;params(xref:EVP_KDF.adoc[EVP&lowbar;KDF] const* kdf);
----

== Return Value

Array of OSSL&lowbar;PARAM descriptors terminated by an end sentinel, or NULL&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *kdf*
| Fetched KDF algorithm whose context gettable params are queried&period;
|===


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