md4.c File Reference

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

#include <string.h>
#include "md4.h"

Include dependency graph for md4.c:

Go to the source code of this file.

Defines
#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

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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.c.

---

Define Documentation

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

Definition at line 37 of file md4.c.

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

Definition at line 38 of file md4.c.

Referenced by atomic(), checkSizes(), close_state(), f_luaopen(), freeobj(), GCTM(), lua_atpanic(), lua_close(), lua_gc(), lua_getallocf(), lua_getmetatable(), lua_pushthread(), lua_setallocf(), lua_setmetatable(), lua_xmove(), luaC_barrierback(), luaC_barrierf(), luaC_callGCTM(), luaC_freeall(), luaC_fullgc(), luaC_link(), luaC_linkupval(), luaC_separateudata(), luaC_step(), luaD_throw(), luaE_newthread(), luaF_close(), luaF_findupval(), luaM_realloc_(), luaS_newlstr(), luaS_newudata(), luaS_resize(), luaT_gettmbyobj(), luaT_init(), luaV_concat(), markroot(), newlstr(), preinit_state(), singlestep(), and sweeplist().

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

Definition at line 39 of file md4.c.

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

Definition at line 43 of file md4.c.

#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.c.

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.c.

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.c.

Referenced by mdfour64().

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Function Documentation

unsigned Com_BlockChecksum	(	const void *	buffer,
		int	length
	)

MD4-based checksum utility functions Copyright (C) 2000 Jeff Teunissen <d2deek@pmail.net> Author: Jeff Teunissen <d2deek@pmail.net> Date: 01 Jan 2000

Definition at line 208 of file md4.c.

References mdfour().

Referenced by CM_AddMapTile(), and Com_GetScriptChecksum().

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

Definition at line 112 of file md4.c.

Referenced by mdfour_result(), and mdfour_tail().

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

Definition at line 104 of file md4.c.

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 193 of file md4.c.

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.c.

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 120 of file md4.c.

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 182 of file md4.c.

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 130 of file md4.c.

References copy4(), copy64(), M, mdfour64(), 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 158 of file md4.c.

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

Referenced by mdfour().

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Variable Documentation

struct mdfour* m [static]

Definition at line 35 of file md4.c.

Referenced by Check_FindCompositeSides(), CheckNodraws(), CheckPropagateParserContentFlags(), CL_EventAddMail_f(), CL_NationDrawStats(), CL_NationsMaxFunding(), CL_NetReceiveItem(), Com_AddObjectLinks(), G_ReadItem(), Grid_RecalcRouting(), Irc_Proto_Enqueue(), luaH_getn(), luaZ_read(), match(), ParseBrush(), propagateall(), R_CreateSurfaceFlare(), R_Draw3DGlobe(), R_DrawFlareSurfaces(), R_DrawMaterialSurfaces(), R_ImageClearMaterials(), R_LoadMaterials(), R_Trace(), RotatePointAroundVector(), StringToFilter(), SV_FilterPacket(), SV_FitTile(), SV_LinkEdict(), UI_CloseWindowByRef(), UI_GetUIModel(), UI_MaterialEditorNewStage_f(), unbound_search(), UP_GetUnreadMails(), UP_MailClientClick_f(), UP_OpenMail_f(), UP_SetAllMailsRead_f(), and UP_SetMailButtons_f().