[#CAST_set_key]
= CAST_set_key
:mrdocs:

Expand a CAST user key into a CAST_KEY schedule (deprecated; prefer EVP).

== Synopsis

Declared in `<openssl/cast.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
void
CAST_set_key(
    xref:CAST_KEY.adoc[CAST_KEY]* key,
    int len,
    unsigned char const* data);
----

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

[cols="1,4"]
|===
| Name| Description
| *key*
| Destination expanded CAST key schedule.
| *len*
| Length of `data` in bytes (typically up to CAST_KEY_LENGTH).
| *data*
| Raw CAST key bytes.
|===


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