source3/rpc_client/init_samr.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Guenther Deschner                  2008.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21
  22 /*************************************************************************
  23  inits a samr_CryptPasswordEx structure
  24  *************************************************************************/
  25
  26 void init_samr_CryptPasswordEx(const char *pwd,
  27                                DATA_BLOB *session_key,
  28                                struct samr_CryptPasswordEx *pwd_buf)
  29 {
  30         /* samr_CryptPasswordEx */
  31
  32         uchar pwbuf[532];
  33         struct MD5Context md5_ctx;
  34         uint8_t confounder[16];
  35         DATA_BLOB confounded_session_key = data_blob(NULL, 16);
  36
  37         encode_pw_buffer(pwbuf, pwd, STR_UNICODE);
  38
  39         generate_random_buffer((uint8_t *)confounder, 16);
  40
  41         MD5Init(&md5_ctx);
  42         MD5Update(&md5_ctx, confounder, 16);
  43         MD5Update(&md5_ctx, session_key->data,
  44                             session_key->length);
  45         MD5Final(confounded_session_key.data, &md5_ctx);
  46
  47         SamOEMhashBlob(pwbuf, 516, &confounded_session_key);
  48         memcpy(&pwbuf[516], confounder, 16);
  49
  50         memcpy(pwd_buf->data, pwbuf, sizeof(pwbuf));
  51         data_blob_free(&confounded_session_key);
  52 }
  53
  54 /*************************************************************************
  55  inits a samr_CryptPassword structure
  56  *************************************************************************/
  57
  58 void init_samr_CryptPassword(const char *pwd,
  59                              DATA_BLOB *session_key,
  60                              struct samr_CryptPassword *pwd_buf)
  61 {
  62         /* samr_CryptPassword */
  63
  64         encode_pw_buffer(pwd_buf->data, pwd, STR_UNICODE);
  65         SamOEMhashBlob(pwd_buf->data, 516, session_key);
  66 }