[#PKCS7_get0_signers]
= PKCS7&lowbar;get0&lowbar;signers
:mrdocs:

Return the signer certificates used by PKCS7&lowbar;verify() without duplicating them&period;

== Synopsis

Declared in `&lt;openssl&sol;pkcs7&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:stack_st_X509.adoc[stack&lowbar;st&lowbar;X509]*
PKCS7&lowbar;get0&lowbar;signers(
    xref:PKCS7.adoc[PKCS7]* p7,
    xref:stack_st_X509.adoc[stack&lowbar;st&lowbar;X509]* certs,
    int flags);
----

== Return Value

Stack of X509 pointers owned by `p7` &sol; `certs` (do not free elements), or NULL on error&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p7*
| Signed PKCS&num;7 object whose signers are located&period;
| *certs*
| Optional certificates searched in addition to those embedded in `p7&period;`
| *flags*
| PKCS7&lowbar;&ast; flags controlling signer lookup (for example PKCS7&lowbar;NOINTERN)&period;
|===


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