[#PKCS7_dataVerify]
= PKCS7_dataVerify
:mrdocs:

Verify a PKCS#7 signed content digest against a signer info and certificate store.

== Synopsis

Declared in `<openssl/pkcs7.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
PKCS7_dataVerify(
    xref:X509_STORE.adoc[X509_STORE]* cert_store,
    xref:X509_STORE_CTX.adoc[X509_STORE_CTX]* ctx,
    xref:BIO.adoc[BIO]* bio,
    xref:PKCS7.adoc[PKCS7]* p7,
    xref:PKCS7_SIGNER_INFO.adoc[PKCS7_SIGNER_INFO]* si);
----

== Return Value

1 if verification succeeds, or 0 / a negative value on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cert_store*
| Trusted store used to locate and validate the signer certificate.
| *ctx*
| Verification context reused or initialized for the signer certificate check.
| *bio*
| BIO supplying the signed content octets (digest input).
| *p7*
| Signed PKCS#7 structure containing certificates and signer infos.
| *si*
| Signer info whose signature and digest are verified.
|===


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