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secur32: Add real signing / verifying to NTLM provider.

This commit is contained in:
Kai Blin 2006-08-17 02:11:39 +02:00 committed by Alexandre Julliard
parent 92a86a03e2
commit c4d5becd6f
4 changed files with 267 additions and 9 deletions
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1
dlls/secur32/Makefile.in
View File

@ -15,6 +15,7 @@ C_SRCS = \
schannel.c \
secur32.c \
thunks.c \
util.c \
wrapper.c
SUBDIRS = tests

64
dlls/secur32/ntlm.c
View File

@ -649,8 +649,11 @@ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
TRACE("Helper sent %s\n", debugstr_a(buffer+3));
helper->valid_session_key = FALSE;
helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
/*FIXME: Generate the dummy session key = MD4(MD4(password))*/
memset(helper->session_key, 0 , 16);
/*Generate the dummy session key = MD4(MD4(password))*/
if(helper->password)
SECUR32_CreateNTLMv1SessionKey(helper->password, helper->session_key);
else
memset(helper->session_key, 0, 16);
}
else if(strncmp(buffer, "GK ", 3) == 0)
{
@ -672,6 +675,9 @@ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
memcpy(helper->session_key, bin, bin_len);
}
}
helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
helper->crypt.ntlm.seq_num = 0l;
}
if(ret != SEC_I_CONTINUE_NEEDED)
@ -1005,16 +1011,19 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
TRACE("Session key is %s\n", debugstr_a(buffer+3));
helper->valid_session_key = TRUE;
if(!helper->session_key)
helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
if(!helper->session_key)
{
TRACE("Failed to allocate memory for session key\n");
ret = SEC_E_INTERNAL_ERROR;
goto asc_end;
}
memcpy(helper->session_key, bin, bin_len);
memcpy(helper->session_key, bin, 16);
}
}
helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
helper->crypt.ntlm.seq_num = 0l;
}
phNewContext->dwUpper = ctxt_attr;
@ -1171,6 +1180,7 @@ static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG
PSecBufferDesc pMessage, ULONG MessageSeqNo)
{
PNegoHelper helper;
ULONG sign_version = 1;
TRACE("%p %ld %p %ld\n", phContext, fQOP, pMessage, MessageSeqNo);
if (!phContext)
@ -1199,8 +1209,28 @@ static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG
}
if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
{
FIXME("Can't handle real signing yet. Aborting.\n");
return SEC_E_UNSUPPORTED_FUNCTION;
PBYTE sig = pMessage->pBuffers[0].pvBuffer;
ULONG crc = ComputeCrc32(pMessage->pBuffers[1].pvBuffer,
pMessage->pBuffers[1].cbBuffer);
sig[ 0] = (sign_version >> 0) & 0xff;
sig[ 1] = (sign_version >> 8) & 0xff;
sig[ 2] = (sign_version >> 16) & 0xff;
sig[ 3] = (sign_version >> 24) & 0xff;
memset(sig+4, 0, 4);
sig[ 8] = (crc >> 0) & 0xff;
sig[ 9] = (crc >> 8) & 0xff;
sig[10] = (crc >> 16) & 0xff;
sig[11] = (crc >> 24) & 0xff;
sig[12] = (helper->crypt.ntlm.seq_num >> 0) & 0xff;
sig[13] = (helper->crypt.ntlm.seq_num >> 8) & 0xff;
sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
++(helper->crypt.ntlm.seq_num);
SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
return SEC_E_OK;
}
if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
@ -1257,8 +1287,26 @@ static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
{
FIXME("Can't handle real signing yet. Aborting.\n");
return SEC_E_UNSUPPORTED_FUNCTION;
SecBufferDesc local_desc;
SecBuffer local_buff[2];
BYTE local_sig[16];
local_desc.ulVersion = SECBUFFER_VERSION;
local_desc.cBuffers = 2;
local_desc.pBuffers = local_buff;
local_buff[0].BufferType = SECBUFFER_TOKEN;
local_buff[0].cbBuffer = 16;
local_buff[0].pvBuffer = local_sig;
local_buff[1].BufferType = SECBUFFER_DATA;
local_buff[1].cbBuffer = pMessage->pBuffers[1].cbBuffer;
local_buff[1].pvBuffer = pMessage->pBuffers[1].pvBuffer;
ntlm_MakeSignature(phContext, fQOP, &local_desc, MessageSeqNo);
if(memcmp(((PBYTE)local_buff[0].pvBuffer) + 8, ((PBYTE)pMessage->pBuffers[0].pvBuffer) + 8, 8))
return SEC_E_MESSAGE_ALTERED;
return SEC_E_OK;
}
if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)

18
dlls/secur32/secur32_priv.h
View File

@ -55,6 +55,11 @@ typedef enum _helper_mode {
NUM_HELPER_MODES
} HelperMode;
typedef struct tag_arc4_info {
unsigned char x, y;
unsigned char state[256];
} arc4_info;
typedef struct _NegoHelper {
pid_t helper_pid;
HelperMode mode;
@ -69,6 +74,12 @@ typedef struct _NegoHelper {
BYTE *session_key;
BOOL valid_session_key;
unsigned long neg_flags;
struct {
struct {
ULONG seq_num;
arc4_info *a4i;
} ntlm;
} crypt;
} NegoHelper, *PNegoHelper;
/* Allocates space for and initializes a new provider. If fnTableA or fnTableW
@ -124,6 +135,13 @@ SECURITY_STATUS encodeBase64(PBYTE in_buf, int in_len, char* out_buf,
SECURITY_STATUS decodeBase64(char *in_buf, int in_len, BYTE *out_buf,
int max_len, int *out_len);
/* Functions from util.c */
ULONG ComputeCrc32(const BYTE *pData, INT iLen);
SECURITY_STATUS SECUR32_CreateNTLMv1SessionKey(const char* password, PBYTE session_key);
arc4_info *SECUR32_arc4Alloc(void);
void SECUR32_arc4Init(arc4_info *a4i, const BYTE *key, unsigned int keyLen);
void SECUR32_arc4Process(arc4_info *a4i, BYTE *inoutString, unsigned int length);
/* NTLMSSP flags indicating the negotiated features */
#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001
#define NTLMSSP_NEGOTIATE_OEM 0x00000002

191
dlls/secur32/util.c Normal file
View File

@ -0,0 +1,191 @@
/*
* Copyright 2006 Kai Blin
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* This file contains various helper functions needed for NTLM and maybe others
*/
#include <stdarg.h>
#include <stdio.h>
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "rpc.h"
#include "sspi.h"
#include "lm.h"
#include "secur32_priv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(secur32);
/* The CRC32 code is copyright (C) 1986 Gary S. Brown and was placed in the
* public domain.
* CRC polynomial 0xedb88320
*/
static const ULONG CRC_table[256] =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
typedef struct
{
unsigned int buf[4];
unsigned int i[2];
unsigned char in[64];
unsigned char digest[16];
} MD4_CTX;
VOID WINAPI MD4Init( MD4_CTX *ctx );
VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
VOID WINAPI MD4Final( MD4_CTX *ctx );
ULONG ComputeCrc32(const BYTE *pData, INT iLen)
{
ULONG crc = ~0U;
while (iLen > 0)
{
crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
pData++;
iLen--;
}
return ~crc;
}
SECURITY_STATUS SECUR32_CreateNTLMv1SessionKey(const char* password, PBYTE session_key)
{
MD4_CTX ctx;
BYTE ntlm_hash[16];
TRACE("(%p, %p)\n", password, session_key);
MD4Init(&ctx);
MD4Update(&ctx, (const unsigned char*) password, lstrlenA(password));
MD4Final(&ctx);
memcpy(ntlm_hash, ctx.digest, 0x10);
MD4Init(&ctx);
MD4Update(&ctx, ntlm_hash, 0x10u);
MD4Final(&ctx);
memcpy(session_key, ctx.digest, 0x10);
return SEC_E_OK;
}
arc4_info *SECUR32_arc4Alloc(void)
{
arc4_info *a4i = HeapAlloc(GetProcessHeap(), 0, sizeof(arc4_info));
return a4i;
}
/*
* The arc4 code is based on dlls/advapi32/crypt_arc4.c by Mike McCormack,
* which in turn is based on public domain code by Wei Dai
*/
void SECUR32_arc4Init(arc4_info *a4i, const BYTE *key, unsigned int keyLen)
{
unsigned int keyIndex = 0, stateIndex = 0;
unsigned int i, a;
TRACE("(%p, %p, %d)\n", a4i, key, keyLen);
a4i->x = a4i->y = 0;
for (i=0; i<256; i++)
a4i->state[i] = i;
for (i=0; i<256; i++)
{
a = a4i->state[i];
stateIndex += key[keyIndex] + a;
stateIndex &= 0xff;
a4i->state[i] = a4i->state[stateIndex];
a4i->state[stateIndex] = a;
if (++keyIndex >= keyLen)
keyIndex = 0;
}
}
void SECUR32_arc4Process(arc4_info *a4i, BYTE *inoutString, unsigned int length)
{
BYTE *const s=a4i->state;
unsigned int x = a4i->x;
unsigned int y = a4i->y;
unsigned int a, b;
while(length--)
{
x = (x+1) & 0xff;
a = s[x];
y = (y+a) & 0xff;
b = s[y];
s[x] = b;
s[y] = a;
*inoutString++ ^= s[(a+b) & 0xff];
}
a4i->x = x;
a4i->y = y;
}
void SECUR32_arc4Cleanup(arc4_info *a4i)
{
HeapFree(GetProcessHeap(), 0, a4i);
}