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![Zebediah Figura](/assets/img/avatar_default.png)
Signed-off-by: Zebediah Figura <z.figura12@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
188 lines
5.6 KiB
C
188 lines
5.6 KiB
C
/*
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* Copyright 2006 Kai Blin
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* This file contains various helper functions needed for NTLM and maybe others
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include "windef.h"
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#include "winbase.h"
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#include "rpc.h"
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#include "sspi.h"
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#include "secur32_priv.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
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static const char client_to_server_sign_constant[] = "session key to client-to-server signing key magic constant";
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static const char client_to_server_seal_constant[] = "session key to client-to-server sealing key magic constant";
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static const char server_to_client_sign_constant[] = "session key to server-to-client signing key magic constant";
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static const char server_to_client_seal_constant[] = "session key to server-to-client sealing key magic constant";
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typedef struct
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{
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unsigned int buf[4];
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unsigned int i[2];
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unsigned char in[64];
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unsigned char digest[16];
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} MD4_CTX;
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/* And now the same with a different memory layout. */
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typedef struct
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{
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unsigned int i[2];
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unsigned int buf[4];
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unsigned char in[64];
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unsigned char digest[16];
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} MD5_CTX;
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VOID WINAPI MD4Init( MD4_CTX *ctx );
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VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
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VOID WINAPI MD4Final( MD4_CTX *ctx );
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VOID WINAPI MD5Init( MD5_CTX *ctx );
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VOID WINAPI MD5Update( MD5_CTX *ctx, const unsigned char *buf, unsigned int len );
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VOID WINAPI MD5Final( MD5_CTX *ctx );
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SECURITY_STATUS SECUR32_CreateNTLM1SessionKey(PBYTE password, int len, PBYTE session_key)
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{
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MD4_CTX ctx;
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BYTE ntlm_hash[16];
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TRACE("(%p, %p)\n", password, session_key);
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MD4Init(&ctx);
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MD4Update(&ctx, password, len);
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MD4Final(&ctx);
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memcpy(ntlm_hash, ctx.digest, 0x10);
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MD4Init(&ctx);
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MD4Update(&ctx, ntlm_hash, 0x10u);
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MD4Final(&ctx);
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memcpy(session_key, ctx.digest, 0x10);
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return SEC_E_OK;
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}
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static void SECUR32_CalcNTLM2Subkey(const BYTE *session_key, const char *magic, PBYTE subkey)
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{
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MD5_CTX ctx;
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MD5Init(&ctx);
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MD5Update(&ctx, session_key, 16);
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MD5Update(&ctx, (const unsigned char*)magic, lstrlenA(magic)+1);
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MD5Final(&ctx);
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memcpy(subkey, ctx.digest, 16);
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}
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/* This assumes we do have a valid NTLM2 user session key */
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SECURITY_STATUS SECUR32_CreateNTLM2SubKeys(PNegoHelper helper)
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{
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helper->crypt.ntlm2.send_sign_key = heap_alloc(16);
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helper->crypt.ntlm2.send_seal_key = heap_alloc(16);
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helper->crypt.ntlm2.recv_sign_key = heap_alloc(16);
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helper->crypt.ntlm2.recv_seal_key = heap_alloc(16);
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if(helper->mode == NTLM_CLIENT)
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{
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SECUR32_CalcNTLM2Subkey(helper->session_key, client_to_server_sign_constant,
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helper->crypt.ntlm2.send_sign_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, client_to_server_seal_constant,
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helper->crypt.ntlm2.send_seal_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, server_to_client_sign_constant,
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helper->crypt.ntlm2.recv_sign_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, server_to_client_seal_constant,
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helper->crypt.ntlm2.recv_seal_key);
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}
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else
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{
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SECUR32_CalcNTLM2Subkey(helper->session_key, server_to_client_sign_constant,
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helper->crypt.ntlm2.send_sign_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, server_to_client_seal_constant,
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helper->crypt.ntlm2.send_seal_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, client_to_server_sign_constant,
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helper->crypt.ntlm2.recv_sign_key);
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SECUR32_CalcNTLM2Subkey(helper->session_key, client_to_server_seal_constant,
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helper->crypt.ntlm2.recv_seal_key);
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}
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return SEC_E_OK;
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}
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arc4_info *SECUR32_arc4Alloc(void)
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{
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arc4_info *a4i = heap_alloc(sizeof(arc4_info));
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return a4i;
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}
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/*
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* The arc4 code is based on dlls/advapi32/crypt_arc4.c by Mike McCormack,
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* which in turn is based on public domain code by Wei Dai
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*/
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void SECUR32_arc4Init(arc4_info *a4i, const BYTE *key, unsigned int keyLen)
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{
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unsigned int keyIndex = 0, stateIndex = 0;
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unsigned int i, a;
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TRACE("(%p, %p, %d)\n", a4i, key, keyLen);
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a4i->x = a4i->y = 0;
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for (i=0; i<256; i++)
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a4i->state[i] = i;
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for (i=0; i<256; i++)
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{
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a = a4i->state[i];
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stateIndex += key[keyIndex] + a;
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stateIndex &= 0xff;
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a4i->state[i] = a4i->state[stateIndex];
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a4i->state[stateIndex] = a;
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if (++keyIndex >= keyLen)
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keyIndex = 0;
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}
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}
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void SECUR32_arc4Process(arc4_info *a4i, BYTE *inoutString, unsigned int length)
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{
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BYTE *const s=a4i->state;
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unsigned int x = a4i->x;
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unsigned int y = a4i->y;
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unsigned int a, b;
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while(length--)
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{
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x = (x+1) & 0xff;
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a = s[x];
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y = (y+a) & 0xff;
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b = s[y];
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s[x] = b;
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s[y] = a;
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*inoutString++ ^= s[(a+b) & 0xff];
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}
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a4i->x = x;
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a4i->y = y;
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}
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void SECUR32_arc4Cleanup(arc4_info *a4i)
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{
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heap_free(a4i);
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}
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