[#EVP_PKEY_CTX_get_app_data]
= EVP_PKEY_CTX_get_app_data
:mrdocs:

Return the opaque application pointer previously stored on a key context.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void*
EVP_PKEY_CTX_get_app_data(xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx);
----

== Return Value

Pointer set with EVP_PKEY_CTX_set_app_data(), or NULL if unset.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Key context to query.
|===


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