diff options
Diffstat (limited to 'wsutil/md4.c')
| -rw-r--r-- | wsutil/md4.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/wsutil/md4.c b/wsutil/md4.c deleted file mode 100644 index f4a3d88119..0000000000 --- a/wsutil/md4.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - Unix SMB/CIFS implementation. - a implementation of MD4 designed for use in the SMB authentication protocol - Copyright (C) Andrew Tridgell 1997-1998. - - 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. -*/ - -#include "config.h" - -#include <glib.h> -#include <string.h> - -#include "md4.h" - -/* NOTE: This code makes no attempt to be fast! - - It assumes that a int is at least 32 bits long -*/ - -static guint32 A, B, C, D; - -static guint32 F(guint32 X, guint32 Y, guint32 Z) -{ - return (X&Y) | ((~X)&Z); -} - -static guint32 G(guint32 X, guint32 Y, guint32 Z) -{ - return (X&Y) | (X&Z) | (Y&Z); -} - -static guint32 H(guint32 X, guint32 Y, guint32 Z) -{ - return X^Y^Z; -} - -static guint32 lshift(guint32 x, int s) -{ - x &= 0xFFFFFFFF; - return ((x<<s)&0xFFFFFFFF) | (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] + (guint32)0x5A827999,s) -#define ROUND3(a,b,c,d,k,s) a = lshift(a + H(b,c,d) + X[k] + (guint32)0x6ED9EBA1,s) - -/* this applies md4 to 64 byte chunks */ -static void mdfour64(guint32 *M) -{ - int j; - guint32 AA, BB, CC, DD; - guint32 X[16]; - - for (j=0;j<16;j++) - X[j] = M[j]; - - 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); - - A += AA; B += BB; C += CC; D += DD; - - A &= 0xFFFFFFFF; B &= 0xFFFFFFFF; - C &= 0xFFFFFFFF; D &= 0xFFFFFFFF; - - for (j=0;j<16;j++) - X[j] = 0; -} - -static void copy64(guint32 *M, const 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); -} - -static void copy4(unsigned char *out, guint32 x) -{ - out[0] = x&0xFF; - out[1] = (x>>8)&0xFF; - out[2] = (x>>16)&0xFF; - out[3] = (x>>24)&0xFF; -} - -/* produce a md4 message digest from data of length n bytes */ -void crypt_md4(unsigned char *out, const unsigned char *in, size_t n) -{ - unsigned char buf[128]; - guint32 M[16]; - guint32 b = (guint32)(n * 8); - int i; - - A = 0x67452301; - B = 0xefcdab89; - C = 0x98badcfe; - D = 0x10325476; - - while (n > 64) { - copy64(M, in); - mdfour64(M); - in += 64; - n -= 64; - } - - for (i=0;i<128;i++) - buf[i] = 0; - 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); - } - - for (i=0;i<128;i++) - buf[i] = 0; - copy64(M, buf); - - copy4(out, A); - copy4(out+4, B); - copy4(out+8, C); - copy4(out+12, D); - - A = B = C = D = 0; -} - -/* - * Editor modelines - http://www.wireshark.org/tools/modelines.html - * - * Local variables: - * c-basic-offset: 8 - * tab-width: 8 - * indent-tabs-mode: t - * End: - * - * vi: set shiftwidth=8 tabstop=8 noexpandtab: - * :indentSize=8:tabSize=8:noTabs=false: - */ |