[#CMS_SignerInfo_verify_content]
= CMS_SignerInfo_verify_content
:mrdocs:

Verify that the content digest matches a CMS SignerInfo (messageDigest or signature).

== Synopsis

Declared in `<openssl/cms.h>`

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

== 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 whose content signature or signed messageDigest attribute is checked.
| *chain*
| BIO chain supplying the signed content (as used during CMS verification).
|===


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