[#CMS_digest_verify]
= CMS_digest_verify
:mrdocs:

Verify a CMS DigestedData ContentInfo and optionally write the content.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CMS_digest_verify(
    xref:CMS_ContentInfo.adoc[CMS_ContentInfo]* cms,
    xref:BIO.adoc[BIO]* dcont,
    xref:BIO.adoc[BIO]* out,
    unsigned int flags);
----

== Return Value

1 on successful verification, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cms*
| ContentInfo of type NID_pkcs7_digest to verify.
| *dcont*
| Detached content BIO when the digest is detached; normally NULL.
| *out*
| Optional BIO that receives the content after successful verification, or NULL.
| *flags*
| Optional CMS verify flags (for example CMS_TEXT).
|===


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