[#EVP_KDF_CTX_kdf]
= EVP_KDF_CTX_kdf
:mrdocs:

Return the EVP_KDF method associated with a derivation context.

== Synopsis

Declared in `<openssl/kdf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:EVP_KDF.adoc[EVP_KDF] const*
EVP_KDF_CTX_kdf(xref:EVP_KDF_CTX.adoc[EVP_KDF_CTX]* ctx);
----

== Return Value

Borrowed EVP_KDF pointer; do not free.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| KDF context from EVP_KDF_CTX_new().
|===


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