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 struct iovec;
  25
  26 struct smb2_signing_derivation {
  27         DATA_BLOB label;
  28         DATA_BLOB context;
  29 };
  30
  31 struct smb2_signing_derivations {
  32         struct smb2_signing_derivation __signing;
  33         const struct smb2_signing_derivation *signing;
  34         struct smb2_signing_derivation __cipher_c2s;
  35         const struct smb2_signing_derivation *cipher_c2s;
  36         struct smb2_signing_derivation __cipher_s2c;
  37         const struct smb2_signing_derivation *cipher_s2c;
  38         struct smb2_signing_derivation __application;
  39         const struct smb2_signing_derivation *application;
  40 };
  41
  42 void smb2_signing_derivations_fill_const_stack(struct smb2_signing_derivations *ds,
  43                                                enum protocol_types protocol,
  44                                                const DATA_BLOB preauth_hash);
  45
  46 struct smb2_signing_key {
  47         DATA_BLOB blob;
  48         uint16_t sign_algo_id;
  49         union {
  50 #ifdef SMB2_SIGNING_KEY_GNUTLS_TYPES
  51                 gnutls_hmac_hd_t hmac_hnd;
  52 #endif
  53                 void *__hmac_hnd;
  54         };
  55         uint16_t cipher_algo_id;
  56         union {
  57 #ifdef SMB2_SIGNING_KEY_GNUTLS_TYPES
  58                 gnutls_aead_cipher_hd_t cipher_hnd;
  59 #endif
  60                 void *__cipher_hnd;
  61         };
  62 };
  63
  64 NTSTATUS smb2_signing_key_copy(TALLOC_CTX *mem_ctx,
  65                                const struct smb2_signing_key *src,
  66                                struct smb2_signing_key **_dst);
  67 NTSTATUS smb2_signing_key_sign_create(TALLOC_CTX *mem_ctx,
  68                                       uint16_t sign_algo_id,
  69                                       const DATA_BLOB *master_key,
  70                                       const struct smb2_signing_derivation *d,
  71                                       struct smb2_signing_key **_key);
  72 NTSTATUS smb2_signing_key_cipher_create(TALLOC_CTX *mem_ctx,
  73                                         uint16_t cipher_algo_id,
  74                                         const DATA_BLOB *master_key,
  75                                         const struct smb2_signing_derivation *d,
  76                                         struct smb2_signing_key **_key);
  77
  78 bool smb2_signing_key_valid(const struct smb2_signing_key *key);
  79
  80 NTSTATUS smb2_signing_sign_pdu(struct smb2_signing_key *signing_key,
  81                                struct iovec *vector,
  82                                int count);
  83
  84 NTSTATUS smb2_signing_check_pdu(struct smb2_signing_key *signing_key,
  85                                 const struct iovec *vector,
  86                                 int count);
  87
  88 NTSTATUS smb2_key_derivation(const uint8_t *KI, size_t KI_len,
  89                              const uint8_t *Label, size_t Label_len,
  90                              const uint8_t *Context, size_t Context_len,
  91                              uint8_t *KO, size_t KO_len);
  92
  93 NTSTATUS smb2_signing_encrypt_pdu(struct smb2_signing_key *encryption_key,
  94                                   struct iovec *vector,
  95                                   int count);
  96 NTSTATUS smb2_signing_decrypt_pdu(struct smb2_signing_key *decryption_key,
  97                                   struct iovec *vector,
  98                                   int count);
  99
 100 #endif /* _LIBCLI_SMB_SMB2_SIGNING_H_ */