[#DES_decrypt3]
= DES_decrypt3
:mrdocs:

Decrypt one block with triple‐DES EDE using three schedules (deprecated low‐level).

== Synopsis

Declared in `<openssl/des.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
void
DES_decrypt3(
    xref:DES_LONG.adoc[DES_LONG]* data,
    xref:DES_key_schedule.adoc[DES_key_schedule]* ks1,
    xref:DES_key_schedule.adoc[DES_key_schedule]* ks2,
    xref:DES_key_schedule.adoc[DES_key_schedule]* ks3);
----

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

[cols="1,4"]
|===
| Name| Description
| *data*
| Two DES_LONG words holding the 64‐bit block (no outer IP/FP).
| *ks1*
| First DES key schedule (decrypt).
| *ks2*
| Second DES key schedule (encrypt).
| *ks3*
| Third DES key schedule (decrypt).
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#