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openssl/doc/man3/EVP_md4.pod

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EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
=pod
=head1 NAME
EVP_md4
- MD4 For EVP
=head1 SYNOPSIS
#include <openssl/evp.h>
const EVP_MD *EVP_md4(void);
=head1 DESCRIPTION
MD4 is a cryptographic hash function standardized in RFC 1320 and designed by
doc: Add a hint to man3/EVP_$hash that it is legacy Some hash algorithms are only provided by the legacy provider. This information is not mentioned in EVP_md4(3) for md4 and one might wonder why it is no longer working. Add a note to the EVP_ man page for md2, md4, mdc2, ripemd160 and whirlpool that it is only available with the legacy provider. Fixes #11650 Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/12074)
2020-06-07 00:22:04 +08:00
Ronald Rivest, first published in 1990. This implementation is only available
with the legacy provider.
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
=over 4
=item EVP_md4()
The MD4 algorithm which produces a 128-bit output from a given input.
=back
Add provider pre-fetching documentation Clearly document that implicit fetching is slower when using providers, and explain prefetching. Added to crypto.pod and migration_guide.pod links to it. Add a link to EVP_default_properties_enable_fips() in crypto.pod. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/20354)
2023-02-22 08:11:33 +08:00
=head1 NOTES
Developers should be aware of the negative performance implications of
calling this function multiple times and should consider using
Reference the non-"legacy" provider names directly from EVP_md5(3) &c. Earlier today, it took me five manuals! to find what on earth the "Performance"/"EVP_MD_fetch(3)" crosslinks actually mean: EVP_sha1(3) crypto(7) EVP_MD_fetch(3) (but not there! don't read that!) OSSL_PROVIDER-default(7) EVP_MD-SHA1(7) If, instead, EVP_sha1(3) referenced EVP_MD-SHA1(7) at /all/, which it should do, since it's supposed to be what you're replacing it with, but it doesn't actually say that, maybe people would use it. I know I didn't because it's basically just deadass buried As found by git grep -l 'and should consider using' Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/22420)
2023-10-18 21:35:55 +08:00
L<EVP_MD_fetch(3)> with L<EVP_MD-MD4(7)> instead.
Add provider pre-fetching documentation Clearly document that implicit fetching is slower when using providers, and explain prefetching. Added to crypto.pod and migration_guide.pod links to it. Add a link to EVP_default_properties_enable_fips() in crypto.pod. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/20354)
2023-02-22 08:11:33 +08:00
See L<crypto(7)/Performance> for further information.
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
=head1 RETURN VALUES
These functions return a B<EVP_MD> structure that contains the
doc: replace "symmetric cipher" phrase in EVP_MD manpages CLA: trivial Reviewed-by: Ben Kaduk <kaduk@mit.edu> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/18169)
2022-04-25 16:51:00 +08:00
implementation of the message digest. See L<EVP_MD_meth_new(3)> for
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
details of the B<EVP_MD> structure.
=head1 CONFORMING TO
IETF RFC 1320.
=head1 SEE ALSO
L<evp(7)>,
doc: Add a hint to man3/EVP_$hash that it is legacy Some hash algorithms are only provided by the legacy provider. This information is not mentioned in EVP_md4(3) for md4 and one might wonder why it is no longer working. Add a note to the EVP_ man page for md2, md4, mdc2, ripemd160 and whirlpool that it is only available with the legacy provider. Fixes #11650 Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/12074)
2020-06-07 00:22:04 +08:00
L<provider(7)>,
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
L<EVP_DigestInit(3)>
=head1 COPYRIGHT
Copyright year updates Reviewed-by: Richard Levitte <levitte@openssl.org> Release: yes
2023-09-07 16:59:15 +08:00
Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
Following the license change, modify the boilerplates in doc/man3/ [skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7829)
2018-12-06 21:04:44 +08:00
Licensed under the Apache License 2.0 (the "License"). You may not use
EVP digest list: one hash algorithm per file, synchronize EVP list, overall cleanup. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4628)
2017-10-31 15:43:01 +08:00
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut
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