[#CMS_add1_recipient]
= CMS_add1_recipient
:mrdocs:

Add a recipient certificate and optional originator key material to enveloped CMS.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CMS_RecipientInfo.adoc[CMS_RecipientInfo]*
CMS_add1_recipient(
    xref:CMS_ContentInfo.adoc[CMS_ContentInfo]* cms,
    xref:X509.adoc[X509]* recip,
    xref:EVP_PKEY.adoc[EVP_PKEY]* originatorPrivKey,
    xref:X509.adoc[X509]* originator,
    unsigned int flags);
----

== Return Value

Internal pointer to the new CMS_RecipientInfo, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cms*
| Enveloped ContentInfo created with CMS_PARTIAL.
| *recip*
| Recipient certificate to add.
| *originatorPrivKey*
| Originator private key for key‐agreement recipients, or NULL when unused.
| *originator*
| Originator certificate corresponding to `originatorPrivKey,` or NULL when unused.
| *flags*
| Optional CMS flags such as CMS_USE_KEYID.
|===


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