[#CMS_RecipientInfo_kari_decrypt]
= CMS_RecipientInfo_kari_decrypt
:mrdocs:

Unwrap the content‐encryption key from one KARI RecipientEncryptedKey into `cms.`

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CMS_RecipientInfo_kari_decrypt(
    xref:CMS_ContentInfo.adoc[CMS_ContentInfo]* cms,
    xref:CMS_RecipientInfo.adoc[CMS_RecipientInfo]* ri,
    xref:CMS_RecipientEncryptedKey.adoc[CMS_RecipientEncryptedKey]* rek);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cms*
| Enveloped ContentInfo that receives the decrypted CEK.
| *ri*
| Key‐agreement RecipientInfo with private key and peer material already set.
| *rek*
| RecipientEncryptedKey entry that holds the wrapped CEK for this recipient.
|===


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