[#DES_set_key_checked]
= DES_set_key_checked
:mrdocs:

Expand a DES key into a key schedule after checking parity and weak keys (deprecated).

== Synopsis

Declared in `<openssl/des.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
DES_set_key_checked(
    xref:const_DES_cblock.adoc[const_DES_cblock]* key,
    xref:DES_key_schedule.adoc[DES_key_schedule]* schedule);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

0 on success, ‐1 on parity error, or ‐2 if `key` is a weak key.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| Eight‐byte DES key.
| *schedule*
| Destination expanded key schedule.
|===


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