[#BIO_f_md]
= BIO_f_md
:mrdocs:

Return the message‐digest filter BIO method.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BIO_METHOD.adoc[BIO_METHOD] const*
BIO_f_md();
----

== Return Value

BIO_METHOD that digests data passed through it via EVP_Digest* routines.


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