xref: /openssl/doc/man3/EVP_md4.pod (revision b6eb95fa)
1=pod
2
3=head1 NAME
4
5EVP_md4
6- MD4 For EVP
7
8=head1 SYNOPSIS
9
10 #include <openssl/evp.h>
11
12 const EVP_MD *EVP_md4(void);
13
14=head1 DESCRIPTION
15
16MD4 is a cryptographic hash function standardized in RFC 1320 and designed by
17Ronald Rivest, first published in 1990. This implementation is only available
18with the legacy provider.
19
20=over 4
21
22=item EVP_md4()
23
24The MD4 algorithm which produces a 128-bit output from a given input.
25
26=back
27
28=head1 NOTES
29
30Developers should be aware of the negative performance implications of
31calling this function multiple times and should consider using
32L<EVP_MD_fetch(3)> with L<EVP_MD-MD4(7)> instead.
33See L<crypto(7)/Performance> for further information.
34
35=head1 RETURN VALUES
36
37These functions return a B<EVP_MD> structure that contains the
38implementation of the message digest. See L<EVP_MD_meth_new(3)> for
39details of the B<EVP_MD> structure.
40
41=head1 CONFORMING TO
42
43IETF RFC 1320.
44
45=head1 SEE ALSO
46
47L<evp(7)>,
48L<provider(7)>,
49L<EVP_DigestInit(3)>
50
51=head1 COPYRIGHT
52
53Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
54
55Licensed under the Apache License 2.0 (the "License").  You may not use
56this file except in compliance with the License.  You can obtain a copy
57in the file LICENSE in the source distribution or at
58L<https://www.openssl.org/source/license.html>.
59
60=cut
61
62