[#CMS_SignerInfo_get0_pkey_ctx]
= CMS&lowbar;SignerInfo&lowbar;get0&lowbar;pkey&lowbar;ctx
:mrdocs:

Return the EVP&lowbar;PKEY&lowbar;CTX used while signing or verifying a CMS SignerInfo&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:EVP_PKEY_CTX.adoc[EVP&lowbar;PKEY&lowbar;CTX]*
CMS&lowbar;SignerInfo&lowbar;get0&lowbar;pkey&lowbar;ctx(xref:CMS_SignerInfo.adoc[CMS&lowbar;SignerInfo]* si);
----

== Return Value

Internal EVP&lowbar;PKEY&lowbar;CTX pointer (do not free), or NULL if none is set&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *si*
| SignerInfo whose public&hyphen;key context is requested&period;
|===


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