[#EVP_PKEY_CTRL_TLS_MD]
= EVP&lowbar;PKEY&lowbar;CTRL&lowbar;TLS&lowbar;MD
:mrdocs:

EVP&lowbar;PKEY ctrl&colon; select the digest used by the TLS PRF KDF&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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#define EVP&lowbar;PKEY&lowbar;CTRL&lowbar;TLS&lowbar;MD

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