From c4d5becd6fc8148d015142404859644f31bb05a2 Mon Sep 17 00:00:00 2001 From: Kai Blin Date: Thu, 17 Aug 2006 02:11:39 +0200 Subject: [PATCH] secur32: Add real signing / verifying to NTLM provider. --- dlls/secur32/Makefile.in | 1 + dlls/secur32/ntlm.c | 64 ++++++++++-- dlls/secur32/secur32_priv.h | 20 +++- dlls/secur32/util.c | 191 ++++++++++++++++++++++++++++++++++++ 4 files changed, 267 insertions(+), 9 deletions(-) create mode 100644 dlls/secur32/util.c diff --git a/dlls/secur32/Makefile.in b/dlls/secur32/Makefile.in index 179e5521d88..ae32954d4a1 100644 --- a/dlls/secur32/Makefile.in +++ b/dlls/secur32/Makefile.in @@ -15,6 +15,7 @@ C_SRCS = \ schannel.c \ secur32.c \ thunks.c \ + util.c \ wrapper.c SUBDIRS = tests diff --git a/dlls/secur32/ntlm.c b/dlls/secur32/ntlm.c index a132da66fa9..130adbdae1f 100644 --- a/dlls/secur32/ntlm.c +++ b/dlls/secur32/ntlm.c @@ -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) diff --git a/dlls/secur32/secur32_priv.h b/dlls/secur32/secur32_priv.h index cb90534f3b0..007a14b0011 100644 --- a/dlls/secur32/secur32_priv.h +++ b/dlls/secur32/secur32_priv.h @@ -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 @@ -121,9 +132,16 @@ void check_version(PNegoHelper helper); SECURITY_STATUS encodeBase64(PBYTE in_buf, int in_len, char* out_buf, int max_len, int *out_len); -SECURITY_STATUS decodeBase64(char *in_buf, int in_len, BYTE *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 diff --git a/dlls/secur32/util.c b/dlls/secur32/util.c new file mode 100644 index 00000000000..e762c8c7f3c --- /dev/null +++ b/dlls/secur32/util.c @@ -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 +#include +#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); +}