[#MD4_Update]
= MD4_Update
:mrdocs:

Absorb more message bytes into an MD4 digest context (deprecated).

== Synopsis

Declared in `<openssl/md4.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
MD4_Update(
    xref:MD4_CTX.adoc[MD4_CTX]* c,
    void const* data,
    size_t len);
----

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

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *c*
| MD4 context initialized with MD4_Init().
| *data*
| Message bytes to hash.
| *len*
| Number of bytes at `data.`
|===


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