[#EVP_PKEY_get0_siphash]
= EVP&lowbar;PKEY&lowbar;get0&lowbar;siphash
:mrdocs:

Return a pointer to the SipHash key material inside an EVP&lowbar;PKEY (deprecated)&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
&lsqb;&lsqb;deprecated&rsqb;&rsqb;
unsigned char const*
EVP&lowbar;PKEY&lowbar;get0&lowbar;siphash(
    xref:EVP_PKEY.adoc[EVP&lowbar;PKEY] const* pkey,
    size&lowbar;t* len);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

Pointer to the internal key bytes (do not free), or NULL on error&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pkey*
| Key of type EVP&lowbar;PKEY&lowbar;SIPHASH&period;
| *len*
| Receives the key length in bytes&period;
|===


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