libcli/smb/smb_signing.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB Signing Code
   4    Copyright (C) Jeremy Allison 2003.
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
   6    Copyright (C) Stefan Metzmacher 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef _SMB_SIGNING_H_
  23 #define _SMB_SIGNING_H_
  24
  25 struct smb_signing_state;
  26
  27 struct smb_signing_state *smb_signing_init(TALLOC_CTX *mem_ctx,
  28                                            bool allowed,
  29                                            bool desired,
  30                                            bool mandatory);
  31 struct smb_signing_state *smb_signing_init_ex(TALLOC_CTX *mem_ctx,
  32                                               bool allowed,
  33                                               bool desired,
  34                                               bool mandatory,
  35                                               void *(*alloc_fn)(TALLOC_CTX *, size_t),
  36                                               void (*free_fn)(TALLOC_CTX *, void *));
  37 uint32_t smb_signing_next_seqnum(struct smb_signing_state *si, bool oneway);
  38 void smb_signing_cancel_reply(struct smb_signing_state *si, bool oneway);
  39 void smb_signing_sign_pdu(struct smb_signing_state *si,
  40                           uint8_t *outhdr, size_t len,
  41                           uint32_t seqnum);
  42 bool smb_signing_check_pdu(struct smb_signing_state *si,
  43                            const uint8_t *inhdr, size_t len,
  44                            uint32_t seqnum);
  45 bool smb_signing_activate(struct smb_signing_state *si,
  46                           const DATA_BLOB user_session_key,
  47                           const DATA_BLOB response);
  48 bool smb_signing_is_active(struct smb_signing_state *si);
  49 bool smb_signing_is_allowed(struct smb_signing_state *si);
  50 bool smb_signing_is_desired(struct smb_signing_state *si);
  51 bool smb_signing_is_mandatory(struct smb_signing_state *si);
  52 bool smb_signing_set_negotiated(struct smb_signing_state *si,
  53                                 bool allowed, bool mandatory);
  54 bool smb_signing_is_negotiated(struct smb_signing_state *si);
  55 void smb_key_derivation(const uint8_t *KI, size_t KI_len,
  56                         uint8_t KO[16]);
  57
  58 #endif /* _SMB_SIGNING_H_ */