[#EVP_MD_CTX_get0_md_data]
= EVP&lowbar;MD&lowbar;CTX&lowbar;get0&lowbar;md&lowbar;data
:mrdocs:

Return the digest method&apos;s private data pointer for a context&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void*
EVP&lowbar;MD&lowbar;CTX&lowbar;get0&lowbar;md&lowbar;data(xref:EVP_MD_CTX.adoc[EVP&lowbar;MD&lowbar;CTX] const* ctx);
----

== Return Value

Implementation&hyphen;specific data pointer (do not free), or NULL if unavailable&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Digest context to query&period;
|===


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