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Add backend encryption support for NTLMv2.

Browse Source 
The leg-work for this was done by the folks at samba-tng.org, I'm just bringing
it accross to HEAD.

The MD5 implementation is seperatly derived, and does not have the copyright
problems that the one in TNG has.

Also add const to a few places where it makes sence.

Andrew Bartlett
(This used to be commit 8df8e84144)
This commit is contained in:
Andrew Bartlett 2001-07-07 07:00:15 +00:00
parent 1c3c995221
commit 7be19ad10f
10 changed files with 546 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
source3/Makefile.in
View File

@ -109,7 +109,7 @@ LIB_OBJ = lib/charcnv.o lib/debug.o lib/fault.o \
lib/util.o lib/util_sock.o lib/util_sec.o smbd/ssl.o \
lib/talloc.o lib/hash.o lib/substitute.o lib/fsusage.o \
lib/ms_fnmatch.o lib/select.o lib/error.o lib/messages.o \
lib/iconv.o \
lib/md5.o lib/hmacmd5.o lib/iconv.o \
nsswitch/wb_client.o nsswitch/wb_common.o $(TDB_OBJ)
READLINE_OBJ = lib/readline.o

33
source3/include/hmacmd5.h Normal file
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@ -0,0 +1,33 @@
/*
Unix SMB/Netbios implementation.
Version 1.9.
Interface header: Scheduler service
Copyright (C) Luke Kenneth Casson Leighton 1996-1999
Copyright (C) Andrew Tridgell 1992-1999
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _HMAC_MD5_H
typedef struct
{
struct MD5Context ctx;
uchar k_ipad[65];
uchar k_opad[65];
} HMACMD5Context;
#endif /* _HMAC_MD5_H */

3
source3/include/includes.h
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@ -663,6 +663,9 @@ extern int errno;
#include "mapping.h"
#include "md5.h"
#include "hmacmd5.h"
#ifndef MAXCODEPAGELINES
#define MAXCODEPAGELINES 256
#endif

21
source3/include/md5.h Normal file
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@ -0,0 +1,21 @@
#ifndef MD5_H
#define MD5_H
struct MD5Context {
uint32 buf[4];
uint32 bits[2];
unsigned char in[64];
};
void MD5Init(struct MD5Context *context);
void MD5Update(struct MD5Context *context, unsigned char const *buf,
unsigned len);
void MD5Final(unsigned char digest[16], struct MD5Context *context);
void MD5Transform(uint32 buf[4], uint32 const in[16]);
/*
* This is needed to make RSAREF happy on some MS-DOS compilers.
*/
typedef struct MD5Context MD5_CTX;
#endif /* !MD5_H */

136
source3/lib/hmacmd5.c Normal file
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@ -0,0 +1,136 @@
/*
Unix SMB/Netbios implementation.
Version 1.9.
HMAC MD5 code for use in NTLMv2
Copyright (C) Luke Kenneth Casson Leighton 1996-2000
Copyright (C) Andrew Tridgell 1992-2000
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* taken direct from rfc2104 implementation and modified for suitable use
* for ntlmv2.
*/
#include "includes.h"
/***********************************************************************
the rfc 2104 version of hmac_md5 initialisation.
***********************************************************************/
void hmac_md5_init_rfc2104(uchar* key, int key_len, HMACMD5Context *ctx)
{
int i;
/* if key is longer than 64 bytes reset it to key=MD5(key) */
if (key_len > 64)
{
uchar tk[16];
struct MD5Context tctx;
MD5Init(&tctx);
MD5Update(&tctx, key, key_len);
MD5Final(tk, &tctx);
key = tk;
key_len = 16;
}
/* start out by storing key in pads */
ZERO_STRUCT(ctx->k_ipad);
ZERO_STRUCT(ctx->k_opad);
bcopy( key, ctx->k_ipad, key_len);
bcopy( key, ctx->k_opad, key_len);
/* XOR key with ipad and opad values */
for (i=0; i<64; i++)
{
ctx->k_ipad[i] ^= 0x36;
ctx->k_opad[i] ^= 0x5c;
}
MD5Init(&ctx->ctx);
MD5Update(&ctx->ctx, ctx->k_ipad, 64);
}
/***********************************************************************
the microsoft version of hmac_md5 initialisation.
***********************************************************************/
void hmac_md5_init_limK_to_64(const uchar* key, int key_len,
HMACMD5Context *ctx)
{
int i;
/* if key is longer than 64 bytes truncate it */
if (key_len > 64)
{
key_len = 64;
}
/* start out by storing key in pads */
ZERO_STRUCT(ctx->k_ipad);
ZERO_STRUCT(ctx->k_opad);
bcopy( key, ctx->k_ipad, key_len);
bcopy( key, ctx->k_opad, key_len);
/* XOR key with ipad and opad values */
for (i=0; i<64; i++)
{
ctx->k_ipad[i] ^= 0x36;
ctx->k_opad[i] ^= 0x5c;
}
MD5Init(&ctx->ctx);
MD5Update(&ctx->ctx, ctx->k_ipad, 64);
}
/***********************************************************************
update hmac_md5 "inner" buffer
***********************************************************************/
void hmac_md5_update(const uchar* text, int text_len, HMACMD5Context *ctx)
{
MD5Update(&ctx->ctx, text, text_len); /* then text of datagram */
}
/***********************************************************************
finish off hmac_md5 "inner" buffer and generate outer one.
***********************************************************************/
void hmac_md5_final(uchar *digest, HMACMD5Context *ctx)
{
struct MD5Context ctx_o;
MD5Final(digest, &ctx->ctx);
MD5Init(&ctx_o);
MD5Update(&ctx_o, ctx->k_opad, 64);
MD5Update(&ctx_o, digest, 16);
MD5Final(digest, &ctx_o);
}
/***********************************************************
single function to calculate an HMAC MD5 digest from data.
use the microsoft hmacmd5 init method because the key is 16 bytes.
************************************************************/
void hmac_md5( uchar key[16], uchar* data, int data_len, uchar* digest)
{
HMACMD5Context ctx;
hmac_md5_init_limK_to_64(key, 16, &ctx);
if (data_len != 0)
{
hmac_md5_update(data, data_len, &ctx);
}
hmac_md5_final(digest, &ctx);
}

6
source3/lib/md4.c
View File

@ -101,7 +101,7 @@ static void mdfour64(uint32 *M)
X[j] = 0;
}
static void copy64(uint32 *M, unsigned char *in)
static void copy64(uint32 *M, const unsigned char *in)
{
int i;
@ -110,7 +110,7 @@ static void copy64(uint32 *M, unsigned char *in)
(in[i*4+1]<<8) | (in[i*4+0]<<0);
}
static void copy4(unsigned char *out,uint32 x)
static void copy4(unsigned char *out, uint32 x)
{
out[0] = x&0xFF;
out[1] = (x>>8)&0xFF;
@ -119,7 +119,7 @@ static void copy4(unsigned char *out,uint32 x)
}
/* produce a md4 message digest from data of length n bytes */
void mdfour(unsigned char *out, unsigned char *in, int n)
void mdfour(unsigned char *out, const unsigned char *in, int n)
{
unsigned char buf[128];
uint32 M[16];

245
source3/lib/md5.c Normal file
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@ -0,0 +1,245 @@
/*
* This code implements the MD5 message-digest algorithm.
* The algorithm is due to Ron Rivest. This code was
* written by Colin Plumb in 1993, no copyright is claimed.
* This code is in the public domain; do with it what you wish.
*
* Equivalent code is available from RSA Data Security, Inc.
* This code has been tested against that, and is equivalent,
* except that you don't need to include two pages of legalese
* with every copy.
*
* To compute the message digest of a chunk of bytes, declare an
* MD5Context structure, pass it to MD5Init, call MD5Update as
* needed on buffers full of bytes, and then call MD5Final, which
* will fill a supplied 16-byte array with the digest.
*/
/* This code slightly modified to fit into Samba by
abartlet@samba.org Jun 2001 */
#include "includes.h"
#include "md5.h"
/*
* Note: this code is harmless on little-endian machines.
*/
static void byteReverse(unsigned char *buf, unsigned longs)
{
uint32 t;
do {
t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
((unsigned) buf[1] << 8 | buf[0]);
*(uint32 *) buf = t;
buf += 4;
} while (--longs);
}
/*
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/
void MD5Init(struct MD5Context *ctx)
{
ctx->buf[0] = 0x67452301;
ctx->buf[1] = 0xefcdab89;
ctx->buf[2] = 0x98badcfe;
ctx->buf[3] = 0x10325476;
ctx->bits[0] = 0;
ctx->bits[1] = 0;
}
/*
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
{
register uint32 t;
/* Update bitcount */
t = ctx->bits[0];
if ((ctx->bits[0] = t + ((uint32) len << 3)) < t)
ctx->bits[1]++; /* Carry from low to high */
ctx->bits[1] += len >> 29;
t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
/* Handle any leading odd-sized chunks */
if (t) {
unsigned char *p = (unsigned char *) ctx->in + t;
t = 64 - t;
if (len < t) {
memmove(p, buf, len);
return;
}
memmove(p, buf, t);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
buf += t;
len -= t;
}
/* Process data in 64-byte chunks */
while (len >= 64) {
memmove(ctx->in, buf, 64);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
buf += 64;
len -= 64;
}
/* Handle any remaining bytes of data. */
memmove(ctx->in, buf, len);
}
/*
* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
{
unsigned int count;
unsigned char *p;
/* Compute number of bytes mod 64 */
count = (ctx->bits[0] >> 3) & 0x3F;
/* Set the first char of padding to 0x80. This is safe since there is
always at least one byte free */
p = ctx->in + count;
*p++ = 0x80;
/* Bytes of padding needed to make 64 bytes */
count = 64 - 1 - count;
/* Pad out to 56 mod 64 */
if (count < 8) {
/* Two lots of padding: Pad the first block to 64 bytes */
memset(p, 0, count);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
/* Now fill the next block with 56 bytes */
memset(ctx->in, 0, 56);
} else {
/* Pad block to 56 bytes */
memset(p, 0, count - 8);
}
byteReverse(ctx->in, 14);
/* Append length in bits and transform */
((uint32 *) ctx->in)[14] = ctx->bits[0];
((uint32 *) ctx->in)[15] = ctx->bits[1];
MD5Transform(ctx->buf, (uint32 *) ctx->in);
byteReverse((unsigned char *) ctx->buf, 4);
memmove(digest, ctx->buf, 16);
memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
}
/* The four core functions - F1 is optimized somewhat */
/* #define F1(x, y, z) (x & y | ~x & z) */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
/* This is the central step in the MD5 algorithm. */
#define MD5STEP(f, w, x, y, z, data, s) \
( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
/*
* The core of the MD5 algorithm, this alters an existing MD5 hash to
* reflect the addition of 16 longwords of new data. MD5Update blocks
* the data and converts bytes into longwords for this routine.
*/
void MD5Transform(uint32 buf[4], uint32 const in[16])
{
register uint32 a, b, c, d;
a = buf[0];
b = buf[1];
c = buf[2];
d = buf[3];
MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
buf[0] += a;
buf[1] += b;
buf[2] += c;
buf[3] += d;
}

6
source3/lib/util.c
View File

@ -1450,16 +1450,16 @@ void out_data(FILE *f,char *buf1,int len, int per_line)
}
}
void print_asc(int level, unsigned char *buf,int len)
void print_asc(int level, const unsigned char *buf,int len)
{
int i;
for (i=0;i<len;i++)
DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
}
void dump_data(int level,char *buf1,int len)
void dump_data(int level, const char *buf1,int len)
{
unsigned char *buf = (unsigned char *)buf1;
const unsigned char *buf = (const unsigned char *)buf1;
int i=0;
if (len<=0) return;

8
source3/libsmb/smbdes.c
View File

@ -259,7 +259,7 @@ static void dohash(char *out, char *in, char *key, int forw)
permute(out, rl, perm6, 64);
}
static void str_to_key(unsigned char *str,unsigned char *key)
static void str_to_key(const unsigned char *str,unsigned char *key)
{
int i;
@ -277,7 +277,7 @@ static void str_to_key(unsigned char *str,unsigned char *key)
}
static void smbhash(unsigned char *out, unsigned char *in, unsigned char *key, int forw)
static void smbhash(unsigned char *out, const unsigned char *in, const unsigned char *key, int forw)
{
int i;
char outb[64];
@ -305,14 +305,14 @@ static void smbhash(unsigned char *out, unsigned char *in, unsigned char *key, i
}
}
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, 1);
smbhash(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, 1);
smbhash(p24+8, c8, p21+7, 1);

97
source3/libsmb/smbencrypt.c
View File

@ -4,6 +4,8 @@
SMB parameters and setup
Copyright (C) Andrew Tridgell 1992-1998
Modified by Jeremy Allison 1995.
Copyright (C) Jeremy Allison 1995-2000.
Copyright (C) Luke Kennethc Casson Leighton 1996-2000.
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
@ -83,6 +85,24 @@ static int _my_mbstowcs(int16 *dst, uchar *src, int len)
return i;
}
static int _my_mbstowcsupper(int16 * dst, const uchar * src, int len)
{
int i;
int16 val;
for (i = 0; i < len; i++)
{
val = toupper(*src);
SSVAL(dst, 0, val);
dst++;
src++;
if (val == 0)
break;
}
return i;
}
/*
* Creates the MD4 Hash of the users password in NT UNICODE.
*/
@ -141,8 +161,36 @@ void nt_lm_owf_gen(char *pwd, uchar nt_p16[16], uchar p16[16])
memset(passwd, '\0', sizeof(passwd));
}
/* Does both the NTLMv2 owfs of a user's password */
void ntv2_owf_gen(const uchar owf[16],
const char *user_n, const char *domain_n, uchar kr_buf[16])
{
pstring user_u;
pstring dom_u;
HMACMD5Context ctx;
int user_l = strlen(user_n);
int domain_l = strlen(domain_n);
_my_mbstowcsupper((int16 *) user_u, user_n, user_l * 2);
_my_mbstowcsupper((int16 *) dom_u, domain_n, domain_l * 2);
hmac_md5_init_limK_to_64(owf, 16, &ctx);
hmac_md5_update(user_u, user_l * 2, &ctx);
hmac_md5_update(dom_u, domain_l * 2, &ctx);
hmac_md5_final(kr_buf, &ctx);
#ifdef DEBUG_PASSWORD
DEBUG(100, ("ntv2_owf_gen: user, domain, owfkey, kr\n"));
dump_data(100, user_u, user_l * 2);
dump_data(100, dom_u, domain_l * 2);
dump_data(100, owf, 16);
dump_data(100, kr_buf, 16);
#endif
}
/* Does the des encryption from the NT or LM MD4 hash. */
void SMBOWFencrypt(uchar passwd[16], uchar *c8, uchar p24[24])
void SMBOWFencrypt(const uchar passwd[16], const uchar *c8, uchar p24[24])
{
uchar p21[21];
@ -220,6 +268,53 @@ BOOL make_oem_passwd_hash(char data[516], const char *passwd, uchar old_pw_hash[
return True;
}
/* Does the md5 encryption from the NT hash for NTLMv2. */
void SMBOWFencrypt_ntv2(const uchar kr[16],
const uchar * srv_chal, int srv_chal_len,
const uchar * cli_chal, int cli_chal_len,
char resp_buf[16])
{
HMACMD5Context ctx;
hmac_md5_init_limK_to_64(kr, 16, &ctx);
hmac_md5_update(srv_chal, srv_chal_len, &ctx);
hmac_md5_update(cli_chal, cli_chal_len, &ctx);
hmac_md5_final(resp_buf, &ctx);
#ifdef DEBUG_PASSWORD
DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, cli_chal, resp_buf\n"));
dump_data(100, srv_chal, srv_chal_len);
dump_data(100, cli_chal, cli_chal_len);
dump_data(100, resp_buf, 16);
#endif
}
void SMBsesskeygen_ntv2(const uchar kr[16],
const uchar * nt_resp, char sess_key[16])
{
HMACMD5Context ctx;
hmac_md5_init_limK_to_64(kr, 16, &ctx);
hmac_md5_update(nt_resp, 16, &ctx);
hmac_md5_final(sess_key, &ctx);
#ifdef DEBUG_PASSWORD
DEBUG(100, ("SMBsesskeygen_ntv2:\n"));
dump_data(100, sess_key, 16);
#endif
}
void SMBsesskeygen_ntv1(const uchar kr[16],
const uchar * nt_resp, char sess_key[16])
{
mdfour(sess_key, kr, 16);
#ifdef DEBUG_PASSWORD
DEBUG(100, ("SMBsesskeygen_ntv1:\n"));
dump_data(100, sess_key, 16);
#endif
}
/***********************************************************
encode a password buffer
************************************************************/