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.\"
.IX Title "EVP_MD4 3ssl"
.TH EVP_MD4 3ssl 2024-10-23 3.4.0 OpenSSL
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
EVP_md4
\&\- MD4 For EVP
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/evp.h>
\&
\& const EVP_MD *EVP_md4(void);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
MD4 is a cryptographic hash function standardized in RFC 1320 and designed by
Ronald Rivest, first published in 1990. This implementation is only available
with the legacy provider.
.IP \fBEVP_md4()\fR 4
.IX Item "EVP_md4()"
The MD4 algorithm which produces a 128\-bit output from a given input.
.SH NOTES
.IX Header "NOTES"
Developers should be aware of the negative performance implications of
calling this function multiple times and should consider using
\&\fBEVP_MD_fetch\fR\|(3) with \fBEVP_MD\-MD4\fR\|(7) instead.
See "Performance" in \fBcrypto\fR\|(7) for further information.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
These functions return a \fBEVP_MD\fR structure that contains the
implementation of the message digest. See \fBEVP_MD_meth_new\fR\|(3) for
details of the \fBEVP_MD\fR structure.
.SH "CONFORMING TO"
.IX Header "CONFORMING TO"
IETF RFC 1320.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBevp\fR\|(7),
\&\fBprovider\fR\|(7),
\&\fBEVP_DigestInit\fR\|(3)
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2017\-2023 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (the "License").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.