[#PKCS7_get0_signers]
= PKCS7_get0_signers
:mrdocs:

Return the signer certificates used by PKCS7_verify() without duplicating them.

== Synopsis

Declared in `<openssl/pkcs7.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:stack_st_X509.adoc[stack_st_X509]*
PKCS7_get0_signers(
    xref:PKCS7.adoc[PKCS7]* p7,
    xref:stack_st_X509.adoc[stack_st_X509]* certs,
    int flags);
----

== Return Value

Stack of X509 pointers owned by `p7` / `certs` (do not free elements), or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p7*
| Signed PKCS#7 object whose signers are located.
| *certs*
| Optional certificates searched in addition to those embedded in `p7.`
| *flags*
| PKCS7_* flags controlling signer lookup (for example PKCS7_NOINTERN).
|===


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