md4.cpp File Reference

An implementation of MD4 designed for use in the samba SMB authentication protocol. More...

#include "../shared/shared.h"
#include "md4.h"

Go to the source code of this file.

Macros
#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	lshift(x, s)   (((x)<<(s)) | ((x)>>(32-(s))))
#define	ROUND1(a, b, c, d, k, s)   a = lshift(a + F(b,c,d) + X[k], s)
#define	ROUND2(a, b, c, d, k, s)   a = lshift(a + G(b,c,d) + X[k] + 0x5A827999,s)
#define	ROUND3(a, b, c, d, k, s)   a = lshift(a + H(b,c,d) + X[k] + 0x6ED9EBA1,s)

Functions
static void	mdfour64 (uint32_t *M)
static void	copy64 (uint32_t *M, const unsigned char *in)
static void	copy4 (unsigned char *out, uint32_t x)
static void	mdfour_begin (struct mdfour *md)
static void	mdfour_tail (const unsigned char *in, int n)
static void	mdfour_update (struct mdfour *md, const unsigned char *in, int n)
static void	mdfour_result (struct mdfour *md, unsigned char *out)
static void	mdfour (unsigned char *out, const unsigned char *in, int n)
unsigned	Com_BlockChecksum (const void *buffer, int length)

Variables
static struct mdfour *	m

Detailed Description

An implementation of MD4 designed for use in the samba SMB authentication protocol.

Note

This code makes no attempt to be fast!

It assumes that a int is at least 32 bits long

Definition in file md4.cpp.

Macro Definition Documentation

#define F	(		X,
			Y,
			Z
	)		(((X)&(Y)) | ((~(X))&(Z)))

Definition at line 37 of file md4.cpp.

Referenced by Com_SHA2Process().

#define G	(		X,
			Y,
			Z
	)		(((X)&(Y)) | ((X)&(Z)) | ((Y)&(Z)))

Definition at line 38 of file md4.cpp.

Referenced by Com_SHA2Process().

#define H	(		X,
			Y,
			Z
	)		((X)^(Y)^(Z))

Definition at line 39 of file md4.cpp.

Referenced by Com_SHA2Process().

#define lshift	(		x,
			s
	)		(((x)<<(s)) | ((x)>>(32-(s))))

Definition at line 43 of file md4.cpp.

#define ROUND1	(		a,
			b,
			c,
			d,
			k,
			s
	)		a = lshift(a + F(b,c,d) + X[k], s)

Definition at line 46 of file md4.cpp.

Referenced by mdfour64().

#define ROUND2	(		a,
			b,
			c,
			d,
			k,
			s
	)		a = lshift(a + G(b,c,d) + X[k] + 0x5A827999,s)

Definition at line 47 of file md4.cpp.

Referenced by mdfour64().

#define ROUND3	(		a,
			b,
			c,
			d,
			k,
			s
	)		a = lshift(a + H(b,c,d) + X[k] + 0x6ED9EBA1,s)

Definition at line 48 of file md4.cpp.

Referenced by mdfour64().

Function Documentation

unsigned Com_BlockChecksum	(	const void *	buffer,
		int	length
	)

MD4-based checksum utility functions Copyright (C) 2000 Jeff Teunissen d2dee.nosp@m.k@pm.nosp@m.ail.n.nosp@m.et Author: Jeff Teunissen d2dee.nosp@m.k@pm.nosp@m.ail.n.nosp@m.et Date: 01 Jan 2000

Definition at line 202 of file md4.cpp.

References mdfour().

Referenced by CM_AddMapTile(), and Com_GetScriptChecksum().

static void copy4 ( unsigned char *  out, uint32_t  x  )

static

Definition at line 107 of file md4.cpp.

Referenced by mdfour_result(), and mdfour_tail().

static void copy64 ( uint32_t *  M, const unsigned char *  in  )

static

Definition at line 101 of file md4.cpp.

References i.

Referenced by mdfour_tail(), and mdfour_update().

static void mdfour ( unsigned char *  out, const unsigned char *  in, int  n  )

static

Definition at line 187 of file md4.cpp.

References mdfour_begin(), mdfour_result(), and mdfour_update().

Referenced by Com_BlockChecksum().

static void mdfour64 ( uint32_t *  M )

static

Definition at line 51 of file md4.cpp.

References mdfour::A, mdfour::B, mdfour::C, mdfour::D, ROUND1, ROUND2, and ROUND3.

Referenced by mdfour_tail(), and mdfour_update().

static void mdfour_begin ( struct mdfour *  md )

static

Definition at line 115 of file md4.cpp.

References mdfour::A, mdfour::B, mdfour::C, mdfour::D, and mdfour::totalN.

Referenced by mdfour().

static void mdfour_result ( struct mdfour *  md, unsigned char *  out  )

static

Definition at line 176 of file md4.cpp.

References mdfour::A, mdfour::B, mdfour::C, copy4(), and mdfour::D.

Referenced by mdfour().

static void mdfour_tail ( const unsigned char *  in, int  n  )

static

Definition at line 125 of file md4.cpp.

References copy4(), copy64(), M, mdfour64(), OBJZERO, and mdfour::totalN.

Referenced by mdfour_update().

static void mdfour_update ( struct mdfour *  md, const unsigned char *  in, int  n  )

static

start of edit by Forest 'LordHavoc' Hale commented out to prevent crashing when length is 0 if (n == 0) mdfour_tail(in, n); end of edit by Forest 'LordHavoc' Hale

Definition at line 152 of file md4.cpp.

References copy64(), M, mdfour64(), mdfour_tail(), and mdfour::totalN.

Referenced by mdfour().

Variable Documentation

struct mdfour* m

static

Definition at line 35 of file md4.cpp.

Referenced by CalculateMinsMaxs(), Check_FindCompositeSides(), CheckNodraws(), CheckPropagateParserContentFlags(), CL_EventAddMail(), CL_PrecacheCharacterModels(), Com_AddObjectLinks(), G_ReadItem(), GAME_InitializeBattlescape(), Grid_RecalcRouting(), Irc_Proto_Enqueue(), ParseBrush(), R_CreateSurfaceFlare(), R_Draw3DGlobe(), R_DrawFlareSurfaces(), R_DrawMaterialSurfaces(), R_ImageClearMaterials(), R_LoadMaterials(), R_Trace(), AABB::rotateAround(), RotatePointAroundVector(), StringToFilter(), SV_AddMissingTiles(), SV_FilterPacket(), SV_FitTile(), TEST_F(), UI_CloseWindowByRef(), UI_GeoscapeNodeZoomIn(), UI_GeoscapeNodeZoomOut(), UI_GetUIModel(), UI_ListUIModels_f(), UI_MaterialEditorNewStage_f(), UP_GetUnreadMails(), UP_MailClientClick_f(), UP_OpenMail_f(), and UP_SetAllMailsRead_f().