[#CMS_SignerInfo_verify]
= CMS_SignerInfo_verify
:mrdocs:

Verify the signature on a CMS SignerInfo's signed attributes.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CMS_SignerInfo_verify(xref:CMS_SignerInfo.adoc[CMS_SignerInfo]* si);
----

== Return Value

1 on success, 0 on failure, or a negative value on a more serious error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *si*
| SignerInfo with an associated public key (for example after CMS_SignerInfo_set1_signer_cert).
|===


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