/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
a partial implementation of DES designed for use in the
SMB authentication protocol
- Copyright (C) Andrew Tridgell 1997
+ Copyright (C) Andrew Tridgell 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include "includes.h"
/* NOTES:
*/
+#define uchar unsigned char
-static int perm1[56] = {57, 49, 41, 33, 25, 17, 9,
+static const uchar perm1[56] = {57, 49, 41, 33, 25, 17, 9,
1, 58, 50, 42, 34, 26, 18,
10, 2, 59, 51, 43, 35, 27,
19, 11, 3, 60, 52, 44, 36,
14, 6, 61, 53, 45, 37, 29,
21, 13, 5, 28, 20, 12, 4};
-static int perm2[48] = {14, 17, 11, 24, 1, 5,
+static const uchar perm2[48] = {14, 17, 11, 24, 1, 5,
3, 28, 15, 6, 21, 10,
23, 19, 12, 4, 26, 8,
16, 7, 27, 20, 13, 2,
44, 49, 39, 56, 34, 53,
46, 42, 50, 36, 29, 32};
-static int perm3[64] = {58, 50, 42, 34, 26, 18, 10, 2,
+static const uchar perm3[64] = {58, 50, 42, 34, 26, 18, 10, 2,
60, 52, 44, 36, 28, 20, 12, 4,
62, 54, 46, 38, 30, 22, 14, 6,
64, 56, 48, 40, 32, 24, 16, 8,
61, 53, 45, 37, 29, 21, 13, 5,
63, 55, 47, 39, 31, 23, 15, 7};
-static int perm4[48] = { 32, 1, 2, 3, 4, 5,
+static const uchar perm4[48] = { 32, 1, 2, 3, 4, 5,
4, 5, 6, 7, 8, 9,
8, 9, 10, 11, 12, 13,
12, 13, 14, 15, 16, 17,
24, 25, 26, 27, 28, 29,
28, 29, 30, 31, 32, 1};
-static int perm5[32] = { 16, 7, 20, 21,
+static const uchar perm5[32] = { 16, 7, 20, 21,
29, 12, 28, 17,
1, 15, 23, 26,
5, 18, 31, 10,
22, 11, 4, 25};
-static int perm6[64] ={ 40, 8, 48, 16, 56, 24, 64, 32,
+static const uchar perm6[64] ={ 40, 8, 48, 16, 56, 24, 64, 32,
39, 7, 47, 15, 55, 23, 63, 31,
38, 6, 46, 14, 54, 22, 62, 30,
37, 5, 45, 13, 53, 21, 61, 29,
33, 1, 41, 9, 49, 17, 57, 25};
-static int sc[16] = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1};
+static const uchar sc[16] = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1};
-static int sbox[8][4][16] = {
+static const uchar sbox[8][4][16] = {
{{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7},
{0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8},
{4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0},
{7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8},
{2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}}};
-static void permute(char *out, char *in, int *p, int n)
+static void permute(char *out, const char *in, const uchar *p, int n)
{
int i;
for (i=0;i<n;i++)
*out++ = *in2++;
}
-static void xor(char *out, char *in1, char *in2, int n)
+static void x_or(char *out, char *in1, char *in2, int n)
{
int i;
for (i=0;i<n;i++)
out[i] = in1[i] ^ in2[i];
}
-static void dohash(char *out, char *in, char *key)
+static void dohash(char *out, char *in, char *key, int forw)
{
int i, j, k;
char pk1[56];
permute(er, r, perm4, 48);
- xor(erk, er, ki[i], 48);
+ x_or(erk, er, ki[forw ? i : 15 - i], 48);
for (j=0;j<8;j++)
for (k=0;k<6;k++)
cb[j*4+k] = b[j][k];
permute(pcb, cb, perm5, 32);
- xor(r2, l, pcb, 32);
+ x_or(r2, l, pcb, 32);
for (j=0;j<32;j++)
l[j] = r[j];
permute(out, rl, perm6, 64);
}
-static void str_to_key(unsigned char *str,unsigned char *key)
+/* Convert a 7 byte string to an 8 byte key. */
+static void str_to_key(const unsigned char str[7], unsigned char key[8])
{
int i;
}
-static void smbhash(unsigned char *out, unsigned char *in, unsigned char *key)
+void des_crypt56(unsigned char *out, const unsigned char *in, const unsigned char *key, int forw)
{
int i;
char outb[64];
outb[i] = 0;
}
- dohash(outb, inb, keyb);
+ dohash(outb, inb, keyb, forw);
for (i=0;i<8;i++) {
out[i] = 0;
}
}
-void E_P16(unsigned char *p14,unsigned char *p16)
+void E_P16(const unsigned char *p14,unsigned char *p16)
{
unsigned char sp8[8] = {0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25};
- smbhash(p16, sp8, p14);
- smbhash(p16+8, sp8, p14+7);
+ des_crypt56(p16, sp8, p14, 1);
+ des_crypt56(p16+8, sp8, p14+7, 1);
}
-void E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24)
+void E_P24(const unsigned char *p21, const unsigned char *c8, unsigned char *p24)
{
- smbhash(p24, c8, p21);
- smbhash(p24+8, c8, p21+7);
- smbhash(p24+16, c8, p21+14);
+ des_crypt56(p24, c8, p21, 1);
+ des_crypt56(p24+8, c8, p21+7, 1);
+ des_crypt56(p24+16, c8, p21+14, 1);
}
-void cred_hash1(unsigned char *out,unsigned char *in,unsigned char *key)
+void D_P16(const unsigned char *p14, const unsigned char *in, unsigned char *out)
+{
+ des_crypt56(out, in, p14, 0);
+ des_crypt56(out+8, in+8, p14+7, 0);
+}
+
+void E_old_pw_hash( unsigned char *p14, const unsigned char *in, unsigned char *out)
+{
+ des_crypt56(out, in, p14, 1);
+ des_crypt56(out+8, in+8, p14+7, 1);
+}
+
+/* forward des encryption with a 128 bit key */
+void des_crypt128(unsigned char out[8], const unsigned char in[8], const unsigned char key[16])
{
unsigned char buf[8];
- smbhash(buf, in, key);
- smbhash(out, buf, key+9);
+ des_crypt56(buf, in, key, 1);
+ des_crypt56(out, buf, key+9, 1);
}
-void cred_hash2(unsigned char *out,unsigned char *in,unsigned char *key)
+/* forward des encryption with a 64 bit key */
+void des_crypt64(unsigned char out[8], const unsigned char in[8], const unsigned char key[8])
{
unsigned char buf[8];
- static unsigned char key2[8];
+ unsigned char key2[8];
- smbhash(buf, in, key);
+ memset(key2,'\0',8);
+ des_crypt56(buf, in, key, 1);
key2[0] = key[7];
- smbhash(out, buf, key2);
+ des_crypt56(out, buf, key2, 1);
+}
+
+/* des encryption with a 112 bit (14 byte) key */
+/* Note that if the forw is 1, and key is actually 8 bytes of key, followed by 6 bytes of zeros,
+ this is identical to des_crypt64(). JRA. */
+
+void des_crypt112(unsigned char out[8], const unsigned char in[8], const unsigned char key[14], int forw)
+{
+ unsigned char buf[8];
+ des_crypt56(buf, in, key, forw);
+ des_crypt56(out, buf, key+7, forw);
+}
+
+void cred_hash3(unsigned char *out, const unsigned char *in, const unsigned char *key, int forw)
+{
+ unsigned char key2[8];
+
+ memset(key2,'\0',8);
+ des_crypt56(out, in, key, forw);
+ key2[0] = key[7];
+ des_crypt56(out + 8, in + 8, key2, forw);
+}
+
+/* des encryption of a 16 byte lump of data with a 112 bit key */
+/* Note that if the key is actually 8 bytes of key, followed by 6 bytes of zeros,
+ this is identical to cred_hash3(). JRA. */
+
+void des_crypt112_16(unsigned char out[16], unsigned char in[16], const unsigned char key[14], int forw)
+{
+ des_crypt56(out, in, key, forw);
+ des_crypt56(out + 8, in + 8, key+7, forw);
}
+/*****************************************************************
+ arc4 crypt/decrypt with a 16 byte key.
+*****************************************************************/
+
+void SamOEMhash( unsigned char *data, const unsigned char key[16], size_t len)
+{
+ unsigned char arc4_state[258];
+
+ smb_arc4_init(arc4_state, key, 16);
+ smb_arc4_crypt(arc4_state, data, len);
+}
+
+void SamOEMhashBlob( unsigned char *data, size_t len, DATA_BLOB *key)
+{
+ unsigned char arc4_state[258];
+
+ smb_arc4_init(arc4_state, key->data, key->length);
+ smb_arc4_crypt(arc4_state, data, len);
+}
+
+/* Decode a sam password hash into a password. The password hash is the
+ same method used to store passwords in the NT registry. The DES key
+ used is based on the RID of the user. */
+
+void sam_pwd_hash(unsigned int rid, const uchar *in, uchar *out, int forw)
+{
+ uchar s[14];
+
+ s[0] = s[4] = s[8] = s[12] = (uchar)(rid & 0xFF);
+ s[1] = s[5] = s[9] = s[13] = (uchar)((rid >> 8) & 0xFF);
+ s[2] = s[6] = s[10] = (uchar)((rid >> 16) & 0xFF);
+ s[3] = s[7] = s[11] = (uchar)((rid >> 24) & 0xFF);
+
+ des_crypt56(out, in, s, forw);
+ des_crypt56(out+8, in+8, s+7, forw);
+}
git.samba.org / gd / samba / .git / blobdiff