[#PKCS7_add_attrib_smimecap]
= PKCS7_add_attrib_smimecap
:mrdocs:

Attach an S/MIME capabilities attribute to a PKCS#7 signer info.

== Synopsis

Declared in `<openssl/pkcs7.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
PKCS7_add_attrib_smimecap(
    xref:PKCS7_SIGNER_INFO.adoc[PKCS7_SIGNER_INFO]* si,
    xref:stack_st_X509_ALGOR.adoc[stack_st_X509_ALGOR]* cap);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *si*
| Signer info that receives the SMIMECapabilities signed attribute.
| *cap*
| Stack of X509_ALGOR capability descriptors (for example from PKCS7_simple_smimecap).
|===


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