mirror of
https://git.code.sf.net/p/quake/quake2forge
synced 2024-12-12 13:42:21 +00:00
replace md4.c with mdfour.c
This commit is contained in:
Bill Currie
parent
3ccbf87b4d
commit
094682dbd1
3 changed files with 325 additions and 2 deletions
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@ -117,13 +117,14 @@ QUAKE2_OBJS = \
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$(BUILDDIR)/client/qmenu.o \
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$(BUILDDIR)/client/m_flash.o \
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\
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$(BUILDDIR)/client/checksum.o \
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$(BUILDDIR)/client/cmd.o \
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$(BUILDDIR)/client/cmodel.o \
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$(BUILDDIR)/client/common.o \
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$(BUILDDIR)/client/crc.o \
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$(BUILDDIR)/client/cvar.o \
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$(BUILDDIR)/client/files.o \
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$(BUILDDIR)/client/md4.o \
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$(BUILDDIR)/client/mdfour.o \
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$(BUILDDIR)/client/net_chan.o \
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\
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$(BUILDDIR)/client/sv_ccmds.o \
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@ -217,6 +218,9 @@ $(BUILDDIR)/client/qmenu.o : $(CLIENT_DIR)/qmenu.c
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$(BUILDDIR)/client/m_flash.o : $(GAME_DIR)/m_flash.c
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$(DO_CC)
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$(BUILDDIR)/client/checksum.o : $(COMMON_DIR)/checksum.c
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$(DO_CC)
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$(BUILDDIR)/client/cmd.o : $(COMMON_DIR)/cmd.c
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$(DO_CC)
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@ -235,7 +239,7 @@ $(BUILDDIR)/client/cvar.o : $(COMMON_DIR)/cvar.c
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$(BUILDDIR)/client/files.o : $(COMMON_DIR)/files.c
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$(DO_CC)
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$(BUILDDIR)/client/md4.o : $(COMMON_DIR)/md4.c
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$(BUILDDIR)/client/mdfour.o : $(COMMON_DIR)/mdfour.c
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$(DO_CC)
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$(BUILDDIR)/client/net_chan.o : $(COMMON_DIR)/net_chan.c
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63
qcommon/checksum.c
Normal file
63
qcommon/checksum.c
Normal file
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@ -0,0 +1,63 @@
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/*
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checksum.c
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MD4-based checksum utility functions
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Copyright (C) 2000 Jeff Teunissen <d2deek@pmail.net>
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Author: Jeff Teunissen <d2deek@pmail.net>
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Date: 01 Jan 2000
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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unsigned int
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Com_BlockChecksum (const void *buffer, int length)
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{
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int digest[4];
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unsigned int val;
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mdfour ((unsigned char *) digest, (unsigned char *) buffer, length);
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val = digest[0] ^ digest[1] ^ digest[2] ^ digest[3];
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return val;
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}
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void
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Com_BlockFullChecksum (const void *buffer, int len, unsigned char *outbuf)
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{
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mdfour (outbuf, (unsigned char *) buffer, len);
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}
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256
qcommon/mdfour.c
Normal file
256
qcommon/mdfour.c
Normal file
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@ -0,0 +1,256 @@
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/*
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mdfour.c
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An implementation of MD4 designed for use in the samba SMB
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authentication protocol
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Copyright (C) 1997-1998 Andrew Tridgell
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/mdfour.h"
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#include "QF/uint32.h"
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/* NOTE: This code makes no attempt to be fast!
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It assumes that a int is at least 32 bits long
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*/
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static struct mdfour *m;
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#define F(X,Y,Z) (((X)&(Y)) | ((~(X))&(Z)))
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#define G(X,Y,Z) (((X)&(Y)) | ((X)&(Z)) | ((Y)&(Z)))
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#define H(X,Y,Z) ((X)^(Y)^(Z))
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#ifdef LARGE_INT32
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# define lshift(x,s) ((((x)<<(s))&0xFFFFFFFF) | (((x)>>(32-(s)))&0xFFFFFFFF))
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#else
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# define lshift(x,s) (((x)<<(s)) | ((x)>>(32-(s))))
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#endif
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#define ROUND1(a,b,c,d,k,s) a = lshift(a + F(b,c,d) + X[k], s)
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#define ROUND2(a,b,c,d,k,s) a = lshift(a + G(b,c,d) + X[k] + 0x5A827999,s)
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#define ROUND3(a,b,c,d,k,s) a = lshift(a + H(b,c,d) + X[k] + 0x6ED9EBA1,s)
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/* this applies md4 to 64 byte chunks */
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static void
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mdfour64 (uint32 * M)
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{
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int j;
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uint32 AA, BB, CC, DD;
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uint32 X[16];
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uint32 A, B, C, D;
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for (j = 0; j < 16; j++)
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X[j] = M[j];
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A = m->A;
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B = m->B;
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C = m->C;
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D = m->D;
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AA = A;
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BB = B;
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CC = C;
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DD = D;
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ROUND1 (A, B, C, D, 0, 3);
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ROUND1 (D, A, B, C, 1, 7);
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ROUND1 (C, D, A, B, 2, 11);
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ROUND1 (B, C, D, A, 3, 19);
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ROUND1 (A, B, C, D, 4, 3);
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ROUND1 (D, A, B, C, 5, 7);
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ROUND1 (C, D, A, B, 6, 11);
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ROUND1 (B, C, D, A, 7, 19);
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ROUND1 (A, B, C, D, 8, 3);
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ROUND1 (D, A, B, C, 9, 7);
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ROUND1 (C, D, A, B, 10, 11);
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ROUND1 (B, C, D, A, 11, 19);
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ROUND1 (A, B, C, D, 12, 3);
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ROUND1 (D, A, B, C, 13, 7);
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ROUND1 (C, D, A, B, 14, 11);
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ROUND1 (B, C, D, A, 15, 19);
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ROUND2 (A, B, C, D, 0, 3);
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ROUND2 (D, A, B, C, 4, 5);
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ROUND2 (C, D, A, B, 8, 9);
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ROUND2 (B, C, D, A, 12, 13);
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ROUND2 (A, B, C, D, 1, 3);
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ROUND2 (D, A, B, C, 5, 5);
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ROUND2 (C, D, A, B, 9, 9);
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ROUND2 (B, C, D, A, 13, 13);
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ROUND2 (A, B, C, D, 2, 3);
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ROUND2 (D, A, B, C, 6, 5);
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ROUND2 (C, D, A, B, 10, 9);
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ROUND2 (B, C, D, A, 14, 13);
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ROUND2 (A, B, C, D, 3, 3);
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ROUND2 (D, A, B, C, 7, 5);
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ROUND2 (C, D, A, B, 11, 9);
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ROUND2 (B, C, D, A, 15, 13);
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ROUND3 (A, B, C, D, 0, 3);
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ROUND3 (D, A, B, C, 8, 9);
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ROUND3 (C, D, A, B, 4, 11);
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ROUND3 (B, C, D, A, 12, 15);
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ROUND3 (A, B, C, D, 2, 3);
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ROUND3 (D, A, B, C, 10, 9);
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ROUND3 (C, D, A, B, 6, 11);
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ROUND3 (B, C, D, A, 14, 15);
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ROUND3 (A, B, C, D, 1, 3);
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ROUND3 (D, A, B, C, 9, 9);
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ROUND3 (C, D, A, B, 5, 11);
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ROUND3 (B, C, D, A, 13, 15);
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ROUND3 (A, B, C, D, 3, 3);
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ROUND3 (D, A, B, C, 11, 9);
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ROUND3 (C, D, A, B, 7, 11);
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ROUND3 (B, C, D, A, 15, 15);
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A += AA;
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B += BB;
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C += CC;
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D += DD;
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#ifdef LARGE_INT32
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A &= 0xFFFFFFFF;
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B &= 0xFFFFFFFF;
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C &= 0xFFFFFFFF;
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D &= 0xFFFFFFFF;
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#endif
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for (j = 0; j < 16; j++)
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X[j] = 0;
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m->A = A;
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m->B = B;
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m->C = C;
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m->D = D;
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}
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static void
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copy64 (uint32 * M, const unsigned char *in)
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{
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int i;
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for (i = 0; i < 16; i++)
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M[i] = (in[i * 4 + 3] << 24) | (in[i * 4 + 2] << 16) |
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(in[i * 4 + 1] << 8) | (in[i * 4 + 0] << 0);
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}
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static void
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copy4 (unsigned char *out, uint32 x)
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{
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out[0] = x & 0xFF;
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out[1] = (x >> 8) & 0xFF;
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out[2] = (x >> 16) & 0xFF;
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out[3] = (x >> 24) & 0xFF;
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}
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void
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mdfour_begin (struct mdfour *md)
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{
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md->A = 0x67452301;
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md->B = 0xefcdab89;
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md->C = 0x98badcfe;
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md->D = 0x10325476;
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md->totalN = 0;
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}
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static void
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mdfour_tail (const unsigned char *in, int n)
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{
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unsigned char buf[128];
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uint32 M[16];
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uint32 b;
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m->totalN += n;
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b = m->totalN * 8;
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memset (buf, 0, 128);
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if (n)
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memcpy (buf, in, n);
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buf[n] = 0x80;
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if (n <= 55) {
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copy4 (buf + 56, b);
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copy64 (M, buf);
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mdfour64 (M);
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} else {
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copy4 (buf + 120, b);
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copy64 (M, buf);
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mdfour64 (M);
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copy64 (M, buf + 64);
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mdfour64 (M);
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}
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}
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void
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mdfour_update (struct mdfour *md, const unsigned char *in, int n)
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{
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uint32 M[16];
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if (n == 0)
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mdfour_tail (in, n);
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m = md;
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while (n >= 64) {
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copy64 (M, in);
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mdfour64 (M);
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in += 64;
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n -= 64;
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m->totalN += 64;
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}
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mdfour_tail (in, n);
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}
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void
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mdfour_result (struct mdfour *md, unsigned char *out)
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{
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m = md;
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copy4 (out, m->A);
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copy4 (out + 4, m->B);
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copy4 (out + 8, m->C);
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copy4 (out + 12, m->D);
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}
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void
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mdfour (unsigned char *out, const unsigned char *in, int n)
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{
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struct mdfour md;
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mdfour_begin (&md);
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mdfour_update (&md, in, n);
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mdfour_result (&md, out);
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}
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