[#CMS_RecipientEncryptedKey_cert_cmp]
= CMS_RecipientEncryptedKey_cert_cmp
:mrdocs:

Compare a certificate against the recipient identifier of a RecipientEncryptedKey.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CMS_RecipientEncryptedKey_cert_cmp(
    xref:CMS_RecipientEncryptedKey.adoc[CMS_RecipientEncryptedKey]* rek,
    xref:X509.adoc[X509]* cert);
----

== Return Value

0 if `cert` matches the recipient id, non‐zero if not, or ‐1 if the id form is unsupported.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *rek*
| Per‐recipient encrypted key from a KARI RecipientInfo.
| *cert*
| Candidate recipient certificate.
|===


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