md4.c File Reference

MD4 (Message-Digest Algorithm) More...

#include "core/crypto.h"
#include "hash/md4.h"

Go to the source code of this file.

Macros
#define	TRACE_LEVEL   CRYPTO_TRACE_LEVEL
#define	F(x, y, z)   (((x) & (y)) | (~(x) & (z)))
#define	G(x, y, z)   (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
#define	H(x, y, z)   ((x) ^ (y) ^ (z))
#define	FF(a, b, c, d, x, s)   a += F(b, c, d) + (x), a = ROL32(a, s)
#define	GG(a, b, c, d, x, s)   a += G(b, c, d) + (x) + 0x5A827999, a = ROL32(a, s)
#define	HH(a, b, c, d, x, s)   a += H(b, c, d) + (x) + 0x6ED9EBA1, a = ROL32(a, s)

Functions
error_t	md4Compute (const void *data, size_t length, uint8_t *digest)
	Digest a message using MD4. More...
void	md4Init (Md4Context *context)
	Initialize MD4 message digest context. More...
void	md4Update (Md4Context *context, const void *data, size_t length)
	Update the MD4 context with a portion of the message being hashed. More...
void	md4Final (Md4Context *context, uint8_t *digest)
	Finish the MD4 message digest. More...
void	md4ProcessBlock (Md4Context *context)
	Process message in 16-word blocks. More...

Variables
const uint8_t	MD4_OID [8] = {0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x02, 0x04}
const HashAlgo	md4HashAlgo

Detailed Description

MD4 (Message-Digest Algorithm)

License

SPDX-License-Identifier: GPL-2.0-or-later

Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneCRYPTO Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Description

The MD4 algorithm takes as input a message of arbitrary length and produces as output a 128-bit message digest of the input. Refer to RFC 1320

Author

Oryx Embedded SARL (www.oryx-embedded.com)

Version

2.4.4

Definition in file md4.c.

Macro Definition Documentation

F

#define F	(		x,
			y,
			z
	)		(((x) & (y)) | (~(x) & (z)))

Definition at line 47 of file md4.c.

FF

#define FF	(		a,
			b,
			c,
			d,
			x,
			s
	)		a += F(b, c, d) + (x), a = ROL32(a, s)

Definition at line 51 of file md4.c.

G

#define G	(		x,
			y,
			z
	)		(((x) & (y)) | ((x) & (z)) | ((y) & (z)))

Definition at line 48 of file md4.c.

GG

#define GG	(		a,
			b,
			c,
			d,
			x,
			s
	)		a += G(b, c, d) + (x) + 0x5A827999, a = ROL32(a, s)

Definition at line 52 of file md4.c.

H

#define H	(		x,
			y,
			z
	)		((x) ^ (y) ^ (z))

Definition at line 49 of file md4.c.

HH

#define HH	(		a,
			b,
			c,
			d,
			x,
			s
	)		a += H(b, c, d) + (x) + 0x6ED9EBA1, a = ROL32(a, s)

Definition at line 53 of file md4.c.

TRACE_LEVEL

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL

Definition at line 37 of file md4.c.

Function Documentation

md4Compute()

error_t md4Compute	(	const void *	data,
		size_t	length,
		uint8_t *	digest
	)

Digest a message using MD4.

Parameters

[in]	data	Pointer to the message being hashed
[in]	length	Length of the message
[out]	digest	Pointer to the calculated digest

Returns

Error code

Definition at line 94 of file md4.c.

md4Final()

void md4Final	(	Md4Context *	context,
		uint8_t *	digest
	)

Finish the MD4 message digest.

Parameters

[in]	context	Pointer to the MD4 context
[out]	digest	Calculated digest (optional parameter)

Definition at line 200 of file md4.c.

md4Init()

void md4Init

(

Md4Context *

context

)

Initialize MD4 message digest context.

Parameters

[in]

context

Pointer to the MD4 context to initialize

Definition at line 139 of file md4.c.

md4ProcessBlock()

void md4ProcessBlock

(

Md4Context *

context

)

Process message in 16-word blocks.

Parameters

[in]

context

Pointer to the MD4 context

Definition at line 248 of file md4.c.

md4Update()

void md4Update	(	Md4Context *	context,
		const void *	data,
		size_t	length
	)

Update the MD4 context with a portion of the message being hashed.

Parameters

[in]	context	Pointer to the MD4 context
[in]	data	Pointer to the buffer being hashed
[in]	length	Length of the buffer

Definition at line 161 of file md4.c.

Variable Documentation

MD4_OID

const uint8_t MD4_OID[8] = {0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x02, 0x04}

Definition at line 65 of file md4.c.

md4HashAlgo

const HashAlgo md4HashAlgo

Initial value:

=
{
   "MD4",
   MD4_OID,
   sizeof(MD4_OID),
   sizeof(Md4Context),
   MD4_BLOCK_SIZE,
   MD4_DIGEST_SIZE,
   MD4_MIN_PAD_SIZE,
   FALSE,
   (HashAlgoCompute) md4Compute,
   (HashAlgoInit) md4Init,
   (HashAlgoUpdate) md4Update,
   (HashAlgoFinal) md4Final,
   NULL
}

Definition at line 68 of file md4.c.