mirror of
https://github.com/reactos/reactos.git
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839 lines
21 KiB
C
839 lines
21 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: dll/win32/advapi32/misc/sysfunc.c
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* PURPOSE: advapi32.dll system functions (undocumented)
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* PROGRAMMER: Emanuele Aliberti
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* UPDATE HISTORY:
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* 19990413 EA created
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* 19990415 EA
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* 20080424 Ported from WINE
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*/
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#include <advapi32.h>
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#include <ntsecapi.h>
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#include <ksecioctl.h>
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#include <md4.h>
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#include <md5.h>
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#include <rc4.h>
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static const unsigned char CRYPT_LMhash_Magic[8] =
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{ 'K', 'G', 'S', '!', '@', '#', '$', '%' };
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static const unsigned char DefaultSessionKey[16] =
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{'D', 'e', 'f', 'S', 'e', 's', 's', 'i', 'o', 'n', 'K', 'e', 'y', '!', '@', '#'};
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/******************************************************************************
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* SystemFunction001 [ADVAPI32.@]
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*
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* Encrypts a single block of data using DES
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*
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* PARAMS
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* data [I] data to encrypt (8 bytes)
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* key [I] key data (7 bytes)
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* output [O] the encrypted data (8 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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*/
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NTSTATUS
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WINAPI SystemFunction001(const BYTE *data, const BYTE *key, LPBYTE output)
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{
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if (!data || !output)
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return STATUS_UNSUCCESSFUL;
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CRYPT_DEShash(output, key, data);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction002 [ADVAPI32.@]
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*
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* Decrypts a single block of data using DES
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*
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* PARAMS
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* data [I] data to decrypt (8 bytes)
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* key [I] key data (7 bytes)
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* output [O] the decrypted data (8 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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*/
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NTSTATUS
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WINAPI SystemFunction002(const BYTE *data, const BYTE *key, LPBYTE output)
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{
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if (!data || !output)
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return STATUS_UNSUCCESSFUL;
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CRYPT_DESunhash(output, key, data);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction003 [ADVAPI32.@]
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*
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* Hashes a key using DES and a fixed datablock
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*
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* PARAMS
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* key [I] key data (7 bytes)
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* output [O] hashed key (8 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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*/
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NTSTATUS
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WINAPI SystemFunction003(const BYTE *key, LPBYTE output)
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{
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if (!output)
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return STATUS_UNSUCCESSFUL;
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CRYPT_DEShash(output, key, CRYPT_LMhash_Magic);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction004 [ADVAPI32.@]
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*
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* Encrypts a block of data with DES in ECB mode, preserving the length
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*
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* PARAMS
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* data [I] data to encrypt
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* key [I] key data (up to 7 bytes)
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* output [O] buffer to receive encrypted data
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_BUFFER_TOO_SMALL if the output buffer is too small
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* Failure: STATUS_INVALID_PARAMETER_2 if the key is zero length
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*
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* NOTES
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* Encrypt buffer size should be input size rounded up to 8 bytes
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* plus an extra 8 bytes.
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*/
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NTSTATUS
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WINAPI SystemFunction004(const struct ustring *in,
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const struct ustring *key,
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struct ustring *out)
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{
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union {
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unsigned char uc[8];
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unsigned int ui[2];
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} data;
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unsigned char deskey[7];
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unsigned int crypt_len, ofs;
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if (key->Length<=0)
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return STATUS_INVALID_PARAMETER_2;
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crypt_len = ((in->Length+7)&~7);
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if (out->MaximumLength < (crypt_len+8))
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{
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out->Length = crypt_len + 8;
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return STATUS_BUFFER_TOO_SMALL;
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}
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data.ui[0] = in->Length;
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data.ui[1] = 1;
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if (key->Length<sizeof deskey)
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{
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memset(deskey, 0, sizeof deskey);
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memcpy(deskey, key->Buffer, key->Length);
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}
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else
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memcpy(deskey, key->Buffer, sizeof deskey);
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CRYPT_DEShash(out->Buffer, deskey, data.uc);
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for(ofs=0; ofs<(crypt_len-8); ofs+=8)
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CRYPT_DEShash(out->Buffer+8+ofs, deskey, in->Buffer+ofs);
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memset(data.uc, 0, sizeof data.uc);
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memcpy(data.uc, in->Buffer+ofs, in->Length +8-crypt_len);
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CRYPT_DEShash(out->Buffer+8+ofs, deskey, data.uc);
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out->Length = crypt_len+8;
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction005 [ADVAPI32.@]
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*
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* Decrypts a block of data with DES in ECB mode
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*
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* PARAMS
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* data [I] data to decrypt
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* key [I] key data (up to 7 bytes)
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* output [O] buffer to receive decrypted data
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_BUFFER_TOO_SMALL if the output buffer is too small
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* Failure: STATUS_INVALID_PARAMETER_2 if the key is zero length
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*
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*/
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NTSTATUS
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WINAPI SystemFunction005(const struct ustring *in,
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const struct ustring *key,
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struct ustring *out)
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{
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union {
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unsigned char uc[8];
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unsigned int ui[2];
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} data;
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unsigned char deskey[7];
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unsigned int ofs, crypt_len;
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if (key->Length<=0)
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return STATUS_INVALID_PARAMETER_2;
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if (key->Length<sizeof deskey)
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{
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memset(deskey, 0, sizeof deskey);
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memcpy(deskey, key->Buffer, key->Length);
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}
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else
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memcpy(deskey, key->Buffer, sizeof deskey);
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CRYPT_DESunhash(data.uc, deskey, in->Buffer);
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if (data.ui[1] != 1)
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return STATUS_UNKNOWN_REVISION;
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crypt_len = data.ui[0];
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if (crypt_len > out->MaximumLength)
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{
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out->Length = crypt_len;
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return STATUS_BUFFER_TOO_SMALL;
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}
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for (ofs=0; (ofs+8)<crypt_len; ofs+=8)
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CRYPT_DESunhash(out->Buffer+ofs, deskey, in->Buffer+ofs+8);
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if (ofs<crypt_len)
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{
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CRYPT_DESunhash(data.uc, deskey, in->Buffer+ofs+8);
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memcpy(out->Buffer+ofs, data.uc, crypt_len-ofs);
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}
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out->Length = crypt_len;
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction007 [ADVAPI32.@]
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*
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* MD4 hash a unicode string
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*
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* PARAMS
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* string [I] the string to hash
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* output [O] the md4 hash of the string (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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*/
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NTSTATUS
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WINAPI SystemFunction007(const UNICODE_STRING *string, LPBYTE hash)
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{
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MD4_CTX ctx;
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MD4Init( &ctx );
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MD4Update( &ctx, (const BYTE *)string->Buffer, string->Length );
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MD4Final( &ctx );
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memcpy( hash, ctx.digest, 0x10 );
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction008 [ADVAPI32.@]
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*
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* Creates a LM response from a challenge and a password hash
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*
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* PARAMS
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* challenge [I] Challenge from authentication server
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* hash [I] NTLM hash (from SystemFunction006)
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* response [O] response to send back to the server
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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* NOTES
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* see http://davenport.sourceforge.net/ntlm.html#theLmResponse
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*
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*/
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NTSTATUS
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WINAPI SystemFunction008(const BYTE *challenge, const BYTE *hash, LPBYTE response)
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{
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BYTE key[7*3];
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if (!challenge || !response)
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return STATUS_UNSUCCESSFUL;
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memset(key, 0, sizeof key);
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memcpy(key, hash, 0x10);
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CRYPT_DEShash(response, key, challenge);
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CRYPT_DEShash(response+8, key+7, challenge);
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CRYPT_DEShash(response+16, key+14, challenge);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction009 [ADVAPI32.@]
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*
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* Seems to do the same as SystemFunction008...
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*/
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NTSTATUS
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WINAPI SystemFunction009(const BYTE *challenge, const BYTE *hash, LPBYTE response)
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{
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return SystemFunction008(challenge, hash, response);
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}
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/******************************************************************************
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* SystemFunction010 [ADVAPI32.@]
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* SystemFunction011 [ADVAPI32.@]
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*
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* MD4 hashes 16 bytes of data
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*
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* PARAMS
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* unknown [] seems to have no effect on the output
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* data [I] pointer to data to hash (16 bytes)
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* output [O] the md4 hash of the data (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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*/
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NTSTATUS
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WINAPI SystemFunction010(LPVOID unknown, const BYTE *data, LPBYTE hash)
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{
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MD4_CTX ctx;
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MD4Init( &ctx );
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MD4Update( &ctx, data, 0x10 );
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MD4Final( &ctx );
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memcpy( hash, ctx.digest, 0x10 );
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction012 [ADVAPI32.@]
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* SystemFunction014 [ADVAPI32.@]
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* SystemFunction016 [ADVAPI32.@]
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* SystemFunction018 [ADVAPI32.@]
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* SystemFunction020 [ADVAPI32.@]
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* SystemFunction022 [ADVAPI32.@]
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*
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* Encrypts two DES blocks with two keys
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*
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* PARAMS
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* data [I] data to encrypt (16 bytes)
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* key [I] key data (two lots of 7 bytes)
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* output [O] buffer to receive encrypted data (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL if the input or output buffer is NULL
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*/
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NTSTATUS
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WINAPI SystemFunction012(const BYTE *in, const BYTE *key, LPBYTE out)
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{
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if (!in || !out)
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return STATUS_UNSUCCESSFUL;
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CRYPT_DEShash(out, key, in);
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CRYPT_DEShash(out+8, key+7, in+8);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction013 [ADVAPI32.@]
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* SystemFunction015 [ADVAPI32.@]
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* SystemFunction017 [ADVAPI32.@]
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* SystemFunction019 [ADVAPI32.@]
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* SystemFunction021 [ADVAPI32.@]
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* SystemFunction023 [ADVAPI32.@]
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*
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* Decrypts two DES blocks with two keys
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*
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* PARAMS
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* data [I] data to decrypt (16 bytes)
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* key [I] key data (two lots of 7 bytes)
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* output [O] buffer to receive decrypted data (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL if the input or output buffer is NULL
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*/
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NTSTATUS
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WINAPI SystemFunction013(const BYTE *in, const BYTE *key, LPBYTE out)
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{
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if (!in || !out)
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return STATUS_UNSUCCESSFUL;
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CRYPT_DESunhash(out, key, in);
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CRYPT_DESunhash(out+8, key+7, in+8);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction024 [ADVAPI32.@]
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*
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* Encrypts two DES blocks with a 32 bit key...
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*
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* PARAMS
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* data [I] data to encrypt (16 bytes)
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* key [I] key data (4 bytes)
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* output [O] buffer to receive encrypted data (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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*/
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NTSTATUS
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WINAPI SystemFunction024(const BYTE *in, const BYTE *key, LPBYTE out)
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{
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BYTE deskey[0x10];
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memcpy(deskey, key, 4);
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memcpy(deskey+4, key, 4);
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memcpy(deskey+8, key, 4);
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memcpy(deskey+12, key, 4);
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CRYPT_DEShash(out, deskey, in);
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CRYPT_DEShash(out+8, deskey+7, in+8);
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return STATUS_SUCCESS;
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}
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/******************************************************************************
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* SystemFunction025 [ADVAPI32.@]
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*
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* Decrypts two DES blocks with a 32 bit key...
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*
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* PARAMS
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* data [I] data to encrypt (16 bytes)
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* key [I] key data (4 bytes)
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* output [O] buffer to receive encrypted data (16 bytes)
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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*/
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NTSTATUS
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WINAPI SystemFunction025(const BYTE *in, const BYTE *key, LPBYTE out)
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{
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BYTE deskey[0x10];
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memcpy(deskey, key, 4);
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memcpy(deskey+4, key, 4);
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memcpy(deskey+8, key, 4);
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memcpy(deskey+12, key, 4);
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CRYPT_DESunhash(out, deskey, in);
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CRYPT_DESunhash(out+8, deskey+7, in+8);
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return STATUS_SUCCESS;
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}
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/**********************************************************************
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* SystemFunction028 [ADVAPI32.@]
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*
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* Retrieves an encryption session key...
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*
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* PARAMS
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* ContextHandle [I] RPC context handle
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* SessionKey [O] buffer to receive the session key (16 bytes)
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*
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* RETURNS
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* Success: STATUS_LOCAL_USER_SESSION_KEY
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*
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* @unimplemented
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*/
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NTSTATUS
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WINAPI
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SystemFunction028(
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_In_ PVOID ContextHandle,
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_Out_ LPBYTE SessionKey)
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{
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/* HACK: Always return the default key */
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memcpy(SessionKey, DefaultSessionKey, sizeof(DefaultSessionKey));
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return STATUS_LOCAL_USER_SESSION_KEY;
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#if 0
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//NDRCContextBinding();
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//SystemFunction034()
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return 28;
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#endif
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}
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/**********************************************************************
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*
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* @unimplemented
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*/
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INT
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WINAPI
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SystemFunction029(INT a, INT b)
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{
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//I_RpcBindingIsClientLocal()
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return 29;
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}
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/******************************************************************************
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* SystemFunction030 (ADVAPI32.@)
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*
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* Tests if two blocks of 16 bytes are equal
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*
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* PARAMS
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* b1,b2 [I] block of 16 bytes
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*
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* RETURNS
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* TRUE if blocks are the same
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* FALSE if blocks are different
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*/
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BOOL
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WINAPI SystemFunction030(LPCVOID b1, LPCVOID b2)
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{
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return !memcmp(b1, b2, 0x10);
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}
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|
|
|
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/******************************************************************************
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|
* SystemFunction032 [ADVAPI32.@]
|
|
*
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* Encrypts a string data using ARC4
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|
*
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* PARAMS
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* data [I/O] data to encrypt
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* key [I] key data
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*
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* RETURNS
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* Success: STATUS_SUCCESS
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* Failure: STATUS_UNSUCCESSFUL
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*
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* NOTES
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* see http://web.it.kth.se/~rom/ntsec.html#crypto-strongavail
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*/
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NTSTATUS
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WINAPI SystemFunction032(struct ustring *data, const struct ustring *key)
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{
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RC4_CONTEXT a4i;
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rc4_init(&a4i, key->Buffer, key->Length);
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rc4_crypt(&a4i, data->Buffer, data->Length);
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return STATUS_SUCCESS;
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}
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|
|
|
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/**********************************************************************
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*
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* @unimplemented
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*/
|
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INT
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WINAPI
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SystemFunction033(INT a, INT b)
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{
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return 33;
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}
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|
|
/**********************************************************************
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|
*
|
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* @unimplemented
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|
*/
|
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INT
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WINAPI
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SystemFunction034(INT a, INT b)
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{
|
|
//RpcBindingToStringBindingW
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//I_RpcMapWin32Status
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//RpcStringBindingParseW
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//RpcStringFreeW
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
|
return 34;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* SystemFunction035 (ADVAPI32.@)
|
|
*
|
|
* Described here:
|
|
http://disc.server.com/discussion.cgi?disc=148775;article=942;title=Coding%2FASM%2FSystem
|
|
*
|
|
* NOTES
|
|
* Stub, always return TRUE.
|
|
*/
|
|
BOOL WINAPI SystemFunction035(LPCSTR lpszDllFilePath)
|
|
{
|
|
//FIXME("%s: stub\n", debugstr_a(lpszDllFilePath));
|
|
return TRUE;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* SystemFunction036 (ADVAPI32.@)
|
|
*
|
|
* MSDN documents this function as RtlGenRandom and declares it in ntsecapi.h
|
|
*
|
|
* PARAMS
|
|
* pbBuffer [O] Pointer to memory to receive random bytes.
|
|
* dwLen [I] Number of random bytes to fetch.
|
|
*
|
|
* RETURNS
|
|
* Always TRUE in my tests
|
|
*/
|
|
BOOLEAN
|
|
WINAPI
|
|
SystemFunction036(PVOID pbBuffer, ULONG dwLen)
|
|
{
|
|
////////////////////////////////////////////////////////////////
|
|
//////////////////// B I G W A R N I N G !!! ////////////////
|
|
// This function will output numbers based on the tick count. //
|
|
// It will NOT OUTPUT CRYPTOGRAPHIC-SAFE RANDOM NUMBERS !!! //
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
DWORD dwSeed;
|
|
PBYTE pBuffer;
|
|
ULONG uPseudoRandom;
|
|
LARGE_INTEGER time;
|
|
static ULONG uCounter = 17;
|
|
|
|
if(!pbBuffer || !dwLen)
|
|
{
|
|
/* This function always returns TRUE, even if invalid parameters were passed. (verified under WinXP SP2) */
|
|
return TRUE;
|
|
}
|
|
|
|
/* Get the first seed from the performance counter */
|
|
QueryPerformanceCounter(&time);
|
|
dwSeed = time.LowPart ^ time.HighPart ^ RtlUlongByteSwap(uCounter++);
|
|
|
|
/* We will access the buffer bytewise */
|
|
pBuffer = (PBYTE)pbBuffer;
|
|
|
|
do
|
|
{
|
|
/* Use the pseudo random number generator RtlRandom, which outputs a 4-byte value and a new seed */
|
|
uPseudoRandom = RtlRandom(&dwSeed);
|
|
|
|
do
|
|
{
|
|
/* Get each byte from the pseudo random number and store it in the buffer */
|
|
*pBuffer = (BYTE)(uPseudoRandom >> 8 * (dwLen % 3) & 0xFF);
|
|
++pBuffer;
|
|
} while(--dwLen % 3);
|
|
} while(dwLen);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
HANDLE KsecDeviceHandle;
|
|
|
|
static
|
|
NTSTATUS
|
|
KsecOpenDevice()
|
|
{
|
|
UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\KsecDD");
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
HANDLE DeviceHandle;
|
|
NTSTATUS Status;
|
|
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&DeviceName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL);
|
|
Status = NtOpenFile(&DeviceHandle,
|
|
FILE_READ_DATA | SYNCHRONIZE,
|
|
&ObjectAttributes,
|
|
&IoStatusBlock,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
if (InterlockedCompareExchangePointer(&KsecDeviceHandle, DeviceHandle, NULL) != NULL)
|
|
{
|
|
NtClose(DeviceHandle);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
VOID
|
|
CloseKsecDdHandle(VOID)
|
|
{
|
|
/* Check if we already opened a handle to ksecdd */
|
|
if (KsecDeviceHandle != NULL)
|
|
{
|
|
/* Close it */
|
|
CloseHandle(KsecDeviceHandle);
|
|
KsecDeviceHandle = NULL;
|
|
}
|
|
}
|
|
|
|
static
|
|
NTSTATUS
|
|
KsecDeviceIoControl(
|
|
ULONG IoControlCode,
|
|
PVOID InputBuffer,
|
|
SIZE_T InputBufferLength,
|
|
PVOID OutputBuffer,
|
|
SIZE_T OutputBufferLength)
|
|
{
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
NTSTATUS Status;
|
|
|
|
/* Check if we already have a handle */
|
|
if (KsecDeviceHandle == NULL)
|
|
{
|
|
/* Try to open the device */
|
|
Status = KsecOpenDevice();
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
//ERR("Failed to open handle to KsecDd driver!\n");
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
/* Call the driver */
|
|
Status = NtDeviceIoControlFile(KsecDeviceHandle,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IoControlCode,
|
|
InputBuffer,
|
|
InputBufferLength,
|
|
OutputBuffer,
|
|
OutputBufferLength);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
These functions have nearly identical prototypes to CryptProtectMemory and CryptUnprotectMemory,
|
|
in crypt32.dll.
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* SystemFunction040 (ADVAPI32.@)
|
|
*
|
|
* MSDN documents this function as RtlEncryptMemory and declares it in ntsecapi.h.
|
|
*
|
|
* PARAMS
|
|
* memory [I/O] Pointer to memory to encrypt.
|
|
* length [I] Length of region to encrypt in bytes.
|
|
* flags [I] Control whether other processes are able to decrypt the memory.
|
|
* RTL_ENCRYPT_OPTION_SAME_PROCESS
|
|
* RTL_ENCRYPT_OPTION_CROSS_PROCESS
|
|
* RTL_ENCRYPT_OPTION_SAME_LOGON
|
|
*
|
|
* RETURNS
|
|
* Success: STATUS_SUCCESS
|
|
* Failure: NTSTATUS error code
|
|
*
|
|
* NOTES
|
|
* length must be a multiple of RTL_ENCRYPT_MEMORY_SIZE.
|
|
* If flags are specified when encrypting, the same flag value must be given
|
|
* when decrypting the memory.
|
|
*/
|
|
NTSTATUS
|
|
WINAPI
|
|
SystemFunction040(
|
|
_Inout_ PVOID Memory,
|
|
_In_ ULONG MemoryLength,
|
|
_In_ ULONG OptionFlags)
|
|
{
|
|
ULONG IoControlCode;
|
|
|
|
if (OptionFlags == RTL_ENCRYPT_OPTION_SAME_PROCESS)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_ENCRYPT_SAME_PROCESS;
|
|
}
|
|
else if (OptionFlags == RTL_ENCRYPT_OPTION_CROSS_PROCESS)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_ENCRYPT_CROSS_PROCESS;
|
|
}
|
|
else if (OptionFlags == RTL_ENCRYPT_OPTION_SAME_LOGON)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_ENCRYPT_SAME_LOGON;
|
|
}
|
|
else
|
|
{
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
return KsecDeviceIoControl(IoControlCode, Memory, MemoryLength, Memory, MemoryLength);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* SystemFunction041 (ADVAPI32.@)
|
|
*
|
|
* MSDN documents this function as RtlDecryptMemory and declares it in ntsecapi.h.
|
|
*
|
|
* PARAMS
|
|
* memory [I/O] Pointer to memory to decrypt.
|
|
* length [I] Length of region to decrypt in bytes.
|
|
* flags [I] Control whether other processes are able to decrypt the memory.
|
|
* RTL_ENCRYPT_OPTION_SAME_PROCESS
|
|
* RTL_ENCRYPT_OPTION_CROSS_PROCESS
|
|
* RTL_ENCRYPT_OPTION_SAME_LOGON
|
|
*
|
|
* RETURNS
|
|
* Success: STATUS_SUCCESS
|
|
* Failure: NTSTATUS error code
|
|
*
|
|
* NOTES
|
|
* length must be a multiple of RTL_ENCRYPT_MEMORY_SIZE.
|
|
* If flags are specified when encrypting, the same flag value must be given
|
|
* when decrypting the memory.
|
|
*/
|
|
NTSTATUS
|
|
WINAPI
|
|
SystemFunction041(
|
|
_Inout_ PVOID Memory,
|
|
_In_ ULONG MemoryLength,
|
|
_In_ ULONG OptionFlags)
|
|
{
|
|
ULONG IoControlCode;
|
|
|
|
if (OptionFlags == RTL_ENCRYPT_OPTION_SAME_PROCESS)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_DECRYPT_SAME_PROCESS;
|
|
}
|
|
else if (OptionFlags == RTL_ENCRYPT_OPTION_CROSS_PROCESS)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_DECRYPT_CROSS_PROCESS;
|
|
}
|
|
else if (OptionFlags == RTL_ENCRYPT_OPTION_SAME_LOGON)
|
|
{
|
|
IoControlCode = IOCTL_KSEC_DECRYPT_SAME_LOGON;
|
|
}
|
|
else
|
|
{
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
return KsecDeviceIoControl(IoControlCode, Memory, MemoryLength, Memory, MemoryLength);
|
|
}
|
|
|
|
/* EOF */
|