/*
- mdfour.c
+ mdfour.c
- An implementation of MD4 designed for use in the samba SMB
- authentication protocol
+ An implementation of MD4 designed for use in the samba SMB
+ authentication protocol
- Copyright (C) 1997-1998 Andrew Tridgell
+ Copyright (C) 1997-1998 Andrew Tridgell
- 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 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.
+ 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.
+ 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:
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to:
- Free Software Foundation, Inc.
- 59 Temple Place - Suite 330
- Boston, MA 02111-1307, USA
+ Free Software Foundation, Inc.
+ 59 Temple Place - Suite 330
+ Boston, MA 02111-1307, USA
- $Id: mdfour.c 7689 2007-11-12 14:28:40Z divverent $
-*/
+ $Id: mdfour.c 7689 2007-11-12 14:28:40Z divverent $
+ */
-#include <string.h> /* XoXus: needed for memset call */
+#include <string.h> /* XoXus: needed for memset call */
#include "md4.h"
/* NOTE: This code makes no attempt to be fast!
It assumes that a int is at least 32 bits long
-*/
+ */
static struct mdfour *m;
-#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 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 ) )
#ifdef LARGE_INT32
-#define lshift(x,s) ((((x)<<(s))&0xFFFFFFFF) | (((x)>>(32-(s)))&0xFFFFFFFF))
+#define lshift( x,s ) ( ( ( ( x ) << ( s ) ) & 0xFFFFFFFF ) | ( ( ( x ) >> ( 32 - ( s ) ) ) & 0xFFFFFFFF ) )
#else
-#define lshift(x,s) (((x)<<(s)) | ((x)>>(32-(s))))
+#define lshift( x,s ) ( ( ( x ) << ( s ) ) | ( ( x ) >> ( 32 - ( s ) ) ) )
#endif
-#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)
+#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 )
/* this applies md4 to 64 byte chunks */
-static void mdfour64(uint32 *M)
-{
+static void mdfour64( uint32 *M ){
int j;
uint32 AA, BB, CC, DD;
uint32 X[16];
uint32 A,B,C,D;
- for (j=0;j<16;j++)
+ for ( j = 0; j < 16; j++ )
X[j] = M[j];
A = m->A; B = m->B; C = m->C; D = m->D;
AA = A; BB = B; CC = C; DD = D;
- ROUND1(A,B,C,D, 0, 3); ROUND1(D,A,B,C, 1, 7);
- ROUND1(C,D,A,B, 2, 11); ROUND1(B,C,D,A, 3, 19);
- ROUND1(A,B,C,D, 4, 3); ROUND1(D,A,B,C, 5, 7);
- ROUND1(C,D,A,B, 6, 11); ROUND1(B,C,D,A, 7, 19);
- ROUND1(A,B,C,D, 8, 3); ROUND1(D,A,B,C, 9, 7);
- ROUND1(C,D,A,B, 10, 11); ROUND1(B,C,D,A, 11, 19);
- ROUND1(A,B,C,D, 12, 3); ROUND1(D,A,B,C, 13, 7);
- ROUND1(C,D,A,B, 14, 11); ROUND1(B,C,D,A, 15, 19);
-
- ROUND2(A,B,C,D, 0, 3); ROUND2(D,A,B,C, 4, 5);
- ROUND2(C,D,A,B, 8, 9); ROUND2(B,C,D,A, 12, 13);
- ROUND2(A,B,C,D, 1, 3); ROUND2(D,A,B,C, 5, 5);
- ROUND2(C,D,A,B, 9, 9); ROUND2(B,C,D,A, 13, 13);
- ROUND2(A,B,C,D, 2, 3); ROUND2(D,A,B,C, 6, 5);
- ROUND2(C,D,A,B, 10, 9); ROUND2(B,C,D,A, 14, 13);
- ROUND2(A,B,C,D, 3, 3); ROUND2(D,A,B,C, 7, 5);
- ROUND2(C,D,A,B, 11, 9); ROUND2(B,C,D,A, 15, 13);
-
- ROUND3(A,B,C,D, 0, 3); ROUND3(D,A,B,C, 8, 9);
- ROUND3(C,D,A,B, 4, 11); ROUND3(B,C,D,A, 12, 15);
- ROUND3(A,B,C,D, 2, 3); ROUND3(D,A,B,C, 10, 9);
- ROUND3(C,D,A,B, 6, 11); ROUND3(B,C,D,A, 14, 15);
- ROUND3(A,B,C,D, 1, 3); ROUND3(D,A,B,C, 9, 9);
- ROUND3(C,D,A,B, 5, 11); ROUND3(B,C,D,A, 13, 15);
- ROUND3(A,B,C,D, 3, 3); ROUND3(D,A,B,C, 11, 9);
- ROUND3(C,D,A,B, 7, 11); ROUND3(B,C,D,A, 15, 15);
+ ROUND1( A,B,C,D, 0, 3 ); ROUND1( D,A,B,C, 1, 7 );
+ ROUND1( C,D,A,B, 2, 11 ); ROUND1( B,C,D,A, 3, 19 );
+ ROUND1( A,B,C,D, 4, 3 ); ROUND1( D,A,B,C, 5, 7 );
+ ROUND1( C,D,A,B, 6, 11 ); ROUND1( B,C,D,A, 7, 19 );
+ ROUND1( A,B,C,D, 8, 3 ); ROUND1( D,A,B,C, 9, 7 );
+ ROUND1( C,D,A,B, 10, 11 ); ROUND1( B,C,D,A, 11, 19 );
+ ROUND1( A,B,C,D, 12, 3 ); ROUND1( D,A,B,C, 13, 7 );
+ ROUND1( C,D,A,B, 14, 11 ); ROUND1( B,C,D,A, 15, 19 );
+
+ ROUND2( A,B,C,D, 0, 3 ); ROUND2( D,A,B,C, 4, 5 );
+ ROUND2( C,D,A,B, 8, 9 ); ROUND2( B,C,D,A, 12, 13 );
+ ROUND2( A,B,C,D, 1, 3 ); ROUND2( D,A,B,C, 5, 5 );
+ ROUND2( C,D,A,B, 9, 9 ); ROUND2( B,C,D,A, 13, 13 );
+ ROUND2( A,B,C,D, 2, 3 ); ROUND2( D,A,B,C, 6, 5 );
+ ROUND2( C,D,A,B, 10, 9 ); ROUND2( B,C,D,A, 14, 13 );
+ ROUND2( A,B,C,D, 3, 3 ); ROUND2( D,A,B,C, 7, 5 );
+ ROUND2( C,D,A,B, 11, 9 ); ROUND2( B,C,D,A, 15, 13 );
+
+ ROUND3( A,B,C,D, 0, 3 ); ROUND3( D,A,B,C, 8, 9 );
+ ROUND3( C,D,A,B, 4, 11 ); ROUND3( B,C,D,A, 12, 15 );
+ ROUND3( A,B,C,D, 2, 3 ); ROUND3( D,A,B,C, 10, 9 );
+ ROUND3( C,D,A,B, 6, 11 ); ROUND3( B,C,D,A, 14, 15 );
+ ROUND3( A,B,C,D, 1, 3 ); ROUND3( D,A,B,C, 9, 9 );
+ ROUND3( C,D,A,B, 5, 11 ); ROUND3( B,C,D,A, 13, 15 );
+ ROUND3( A,B,C,D, 3, 3 ); ROUND3( D,A,B,C, 11, 9 );
+ ROUND3( C,D,A,B, 7, 11 ); ROUND3( B,C,D,A, 15, 15 );
A += AA; B += BB; C += CC; D += DD;
C &= 0xFFFFFFFF; D &= 0xFFFFFFFF;
#endif
- for (j=0;j<16;j++)
+ for ( j = 0; j < 16; j++ )
X[j] = 0;
m->A = A; m->B = B; m->C = C; m->D = D;
}
-static void copy64(uint32 *M, unsigned char *in)
-{
+static void copy64( uint32 *M, unsigned char *in ){
int i;
- for (i=0;i<16;i++)
- M[i] = (in[i*4+3]<<24) | (in[i*4+2]<<16) |
- (in[i*4+1]<<8) | (in[i*4+0]<<0);
+ for ( i = 0; i < 16; i++ )
+ M[i] = ( in[i * 4 + 3] << 24 ) | ( in[i * 4 + 2] << 16 ) |
+ ( in[i * 4 + 1] << 8 ) | ( in[i * 4 + 0] << 0 );
}
-static void copy4(unsigned char *out,uint32 x)
-{
- out[0] = x&0xFF;
- out[1] = (x>>8)&0xFF;
- out[2] = (x>>16)&0xFF;
- out[3] = (x>>24)&0xFF;
+static void copy4( unsigned char *out,uint32 x ){
+ out[0] = x & 0xFF;
+ out[1] = ( x >> 8 ) & 0xFF;
+ out[2] = ( x >> 16 ) & 0xFF;
+ out[3] = ( x >> 24 ) & 0xFF;
}
-void mdfour_begin(struct mdfour *md)
-{
+void mdfour_begin( struct mdfour *md ){
md->A = 0x67452301;
md->B = 0xefcdab89;
md->C = 0x98badcfe;
}
-static void mdfour_tail(unsigned char *in, int n)
-{
+static void mdfour_tail( unsigned char *in, int n ){
unsigned char buf[128];
uint32 M[16];
uint32 b;
b = m->totalN * 8;
- memset(buf, 0, 128);
- if (n) memcpy(buf, in, n);
+ memset( buf, 0, 128 );
+ if ( n ) {
+ memcpy( buf, in, n );
+ }
buf[n] = 0x80;
- if (n <= 55) {
- copy4(buf+56, b);
- copy64(M, buf);
- mdfour64(M);
- } else {
- copy4(buf+120, b);
- copy64(M, buf);
- mdfour64(M);
- copy64(M, buf+64);
- mdfour64(M);
+ if ( n <= 55 ) {
+ copy4( buf + 56, b );
+ copy64( M, buf );
+ mdfour64( M );
+ }
+ else {
+ copy4( buf + 120, b );
+ copy64( M, buf );
+ mdfour64( M );
+ copy64( M, buf + 64 );
+ mdfour64( M );
}
}
-void mdfour_update(struct mdfour *md, unsigned char *in, int n)
-{
+void mdfour_update( struct mdfour *md, unsigned char *in, int n ){
uint32 M[16];
// start of edit by Forest 'LordHavoc' Hale
m = md;
- while (n >= 64) {
- copy64(M, in);
- mdfour64(M);
+ while ( n >= 64 ) {
+ copy64( M, in );
+ mdfour64( M );
in += 64;
n -= 64;
m->totalN += 64;
}
- mdfour_tail(in, n);
+ mdfour_tail( in, n );
}
-void mdfour_result(struct mdfour *md, unsigned char *out)
-{
+void mdfour_result( struct mdfour *md, unsigned char *out ){
m = md;
- copy4(out, m->A);
- copy4(out+4, m->B);
- copy4(out+8, m->C);
- copy4(out+12, m->D);
+ copy4( out, m->A );
+ copy4( out + 4, m->B );
+ copy4( out + 8, m->C );
+ copy4( out + 12, m->D );
}
-void mdfour(unsigned char *out, unsigned char *in, int n)
-{
+void mdfour( unsigned char *out, unsigned char *in, int n ){
struct mdfour md;
- mdfour_begin(&md);
- mdfour_update(&md, in, n);
- mdfour_result(&md, out);
+ mdfour_begin( &md );
+ mdfour_update( &md, in, n );
+ mdfour_result( &md, out );
}
///////////////////////////////////////////////////////////////
// Author: Jeff Teunissen <d2deek@pmail.net>
// Date: 01 Jan 2000
-unsigned Com_BlockChecksum (void *buffer, int length)
-{
- int digest[4];
- unsigned val;
+unsigned Com_BlockChecksum( void *buffer, int length ){
+ int digest[4];
+ unsigned val;
- mdfour ( (unsigned char *) digest, (unsigned char *) buffer, length );
+ mdfour( (unsigned char *) digest, (unsigned char *) buffer, length );
val = digest[0] ^ digest[1] ^ digest[2] ^ digest[3];
return val;
}
-void Com_BlockFullChecksum (void *buffer, int len, unsigned char *outbuf)
-{
- mdfour ( outbuf, (unsigned char *) buffer, len );
+void Com_BlockFullChecksum( void *buffer, int len, unsigned char *outbuf ){
+ mdfour( outbuf, (unsigned char *) buffer, len );
}
-
projects / xonotic / netradiant.git / blobdiff