libcli/smb/smb2_signing.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB2 signing
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef _LIBCLI_SMB_SMB2_SIGNING_H_
  22 #define _LIBCLI_SMB_SMB2_SIGNING_H_
  23
  24 #include <gnutls/gnutls.h>
  25
  26 #include "lib/util/data_blob.h"
  27
  28 #include "libcli/smb/smb_constants.h"
  29 #include "libcli/util/ntstatus.h"
  30
  31 struct iovec;
  32
  33 struct smb2_signing_derivation {
  34         DATA_BLOB label;
  35         DATA_BLOB context;
  36 };
  37
  38 struct smb2_signing_derivations {
  39         struct smb2_signing_derivation __signing;
  40         const struct smb2_signing_derivation *signing;
  41         struct smb2_signing_derivation __cipher_c2s;
  42         const struct smb2_signing_derivation *cipher_c2s;
  43         struct smb2_signing_derivation __cipher_s2c;
  44         const struct smb2_signing_derivation *cipher_s2c;
  45         struct smb2_signing_derivation __application;
  46         const struct smb2_signing_derivation *application;
  47 };
  48
  49 void smb2_signing_derivations_fill_const_stack(struct smb2_signing_derivations *ds,
  50                                                enum protocol_types protocol,
  51                                                const DATA_BLOB preauth_hash);
  52
  53 struct smb2_signing_key {
  54         DATA_BLOB blob;
  55         uint16_t sign_algo_id;
  56         union {
  57 #ifdef SMB2_SIGNING_KEY_GNUTLS_TYPES
  58                 gnutls_hmac_hd_t hmac_hnd;
  59 #endif
  60                 void *__hmac_hnd;
  61         };
  62         uint16_t cipher_algo_id;
  63         union {
  64 #ifdef SMB2_SIGNING_KEY_GNUTLS_TYPES
  65                 gnutls_aead_cipher_hd_t cipher_hnd;
  66 #endif
  67                 void *__cipher_hnd;
  68         };
  69 };
  70
  71 NTSTATUS smb2_signing_key_copy(TALLOC_CTX *mem_ctx,
  72                                const struct smb2_signing_key *src,
  73                                struct smb2_signing_key **_dst);
  74 NTSTATUS smb2_signing_key_sign_create(TALLOC_CTX *mem_ctx,
  75                                       uint16_t sign_algo_id,
  76                                       const DATA_BLOB *master_key,
  77                                       const struct smb2_signing_derivation *d,
  78                                       struct smb2_signing_key **_key);
  79 NTSTATUS smb2_signing_key_cipher_create(TALLOC_CTX *mem_ctx,
  80                                         uint16_t cipher_algo_id,
  81                                         const DATA_BLOB *master_key,
  82                                         const struct smb2_signing_derivation *d,
  83                                         struct smb2_signing_key **_key);
  84
  85 bool smb2_signing_key_valid(const struct smb2_signing_key *key);
  86
  87 NTSTATUS smb2_signing_sign_pdu(struct smb2_signing_key *signing_key,
  88                                struct iovec *vector,
  89                                int count);
  90
  91 NTSTATUS smb2_signing_check_pdu(struct smb2_signing_key *signing_key,
  92                                 const struct iovec *vector,
  93                                 int count);
  94
  95 NTSTATUS smb2_signing_encrypt_pdu(struct smb2_signing_key *encryption_key,
  96                                   struct iovec *vector,
  97                                   int count);
  98 NTSTATUS smb2_signing_decrypt_pdu(struct smb2_signing_key *decryption_key,
  99                                   struct iovec *vector,
 100                                   int count);
 101
 102 #endif /* _LIBCLI_SMB_SMB2_SIGNING_H_ */