[#EVP_KDF_gettable_ctx_params]
= EVP_KDF_gettable_ctx_params
:mrdocs:

Return OSSL_PARAM descriptors that can be retrieved from an EVP_KDF_CTX.

== Synopsis

Declared in `<openssl/kdf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_PARAM.adoc[OSSL_PARAM] const*
EVP_KDF_gettable_ctx_params(xref:EVP_KDF.adoc[EVP_KDF] const* kdf);
----

== Return Value

Array of OSSL_PARAM descriptors terminated by an end sentinel, or NULL.

== Parameters

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


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