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Member "cryptsetup-2.4.3/lib/tcrypt/tcrypt.h" (13 Jan 2022, 3460 Bytes) of package /linux/misc/cryptsetup-2.4.3.tar.xz:

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    1 /*
    2  * TCRYPT (TrueCrypt-compatible)  header definition
    3  *
    4  * Copyright (C) 2012-2021 Red Hat, Inc. All rights reserved.
    5  * Copyright (C) 2012-2021 Milan Broz
    6  *
    7  * This file is free software; you can redistribute it and/or
    8  * modify it under the terms of the GNU Lesser General Public
    9  * License as published by the Free Software Foundation; either
   10  * version 2.1 of the License, or (at your option) any later version.
   11  *
   12  * This file 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 GNU
   15  * Lesser General Public License for more details.
   16  *
   17  * You should have received a copy of the GNU Lesser General Public
   18  * License along with this file; if not, write to the Free Software
   19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   20  */
   21 
   22 #ifndef _CRYPTSETUP_TCRYPT_H
   23 #define _CRYPTSETUP_TCRYPT_H
   24 
   25 #include <stdint.h>
   26 
   27 #define TCRYPT_HDR_SALT_LEN 64
   28 #define TCRYPT_HDR_IV_LEN   16
   29 #define TCRYPT_HDR_LEN     448
   30 #define TCRYPT_HDR_KEY_LEN 192
   31 #define TCRYPT_HDR_MAGIC "TRUE"
   32 #define VCRYPT_HDR_MAGIC "VERA"
   33 #define TCRYPT_HDR_MAGIC_LEN 4
   34 
   35 #define TCRYPT_HDR_HIDDEN_OFFSET_OLD -1536
   36 #define TCRYPT_HDR_HIDDEN_OFFSET 65536
   37 
   38 #define TCRYPT_HDR_HIDDEN_OFFSET_BCK -65536
   39 #define TCRYPT_HDR_OFFSET_BCK -131072
   40 
   41 #define TCRYPT_HDR_SYSTEM_OFFSET 31744
   42 
   43 #define TCRYPT_LRW_IKEY_LEN 16
   44 #define TCRYPT_KEY_POOL_LEN 64
   45 #define VCRYPT_KEY_POOL_LEN 128
   46 #define TCRYPT_KEYFILE_LEN  1048576
   47 
   48 #define TCRYPT_HDR_FLAG_SYSTEM    (1 << 0)
   49 #define TCRYPT_HDR_FLAG_NONSYSTEM (1 << 1)
   50 
   51 struct tcrypt_phdr {
   52     char salt[TCRYPT_HDR_SALT_LEN];
   53 
   54     /* encrypted part, TCRYPT_HDR_LEN bytes */
   55     union {
   56     struct __attribute__((__packed__)) {
   57         char     magic[TCRYPT_HDR_MAGIC_LEN];
   58         uint16_t version;
   59         uint16_t version_tc;
   60         uint32_t keys_crc32;
   61         uint64_t _reserved1[2]; /* data/header ctime */
   62         uint64_t hidden_volume_size;
   63         uint64_t volume_size;
   64         uint64_t mk_offset;
   65         uint64_t mk_size;
   66         uint32_t flags;
   67         uint32_t sector_size;
   68         uint8_t  _reserved2[120];
   69         uint32_t header_crc32;
   70         char     keys[256];
   71     } d;
   72     char e[TCRYPT_HDR_LEN];
   73     };
   74 } __attribute__((__packed__));
   75 
   76 struct crypt_device;
   77 struct crypt_params_tcrypt;
   78 struct dm_target;
   79 struct volume_key;
   80 struct device;
   81 
   82 int TCRYPT_read_phdr(struct crypt_device *cd,
   83              struct tcrypt_phdr *hdr,
   84              struct crypt_params_tcrypt *params);
   85 
   86 int TCRYPT_init_by_name(struct crypt_device *cd, const char *name,
   87             const char *uuid,
   88             const struct dm_target *tgt,
   89             struct device **device,
   90             struct crypt_params_tcrypt *tcrypt_params,
   91             struct tcrypt_phdr *tcrypt_hdr);
   92 
   93 int TCRYPT_activate(struct crypt_device *cd,
   94              const char *name,
   95              struct tcrypt_phdr *hdr,
   96              struct crypt_params_tcrypt *params,
   97              uint32_t flags);
   98 
   99 int TCRYPT_deactivate(struct crypt_device *cd,
  100               const char *name,
  101               uint32_t flags);
  102 
  103 uint64_t TCRYPT_get_data_offset(struct crypt_device *cd,
  104                 struct tcrypt_phdr *hdr,
  105                 struct crypt_params_tcrypt *params);
  106 
  107 uint64_t TCRYPT_get_iv_offset(struct crypt_device *cd,
  108                   struct tcrypt_phdr *hdr,
  109                   struct crypt_params_tcrypt *params);
  110 
  111 int TCRYPT_get_volume_key(struct crypt_device *cd,
  112               struct tcrypt_phdr *hdr,
  113               struct crypt_params_tcrypt *params,
  114               struct volume_key **vk);
  115 
  116 int TCRYPT_dump(struct crypt_device *cd,
  117         struct tcrypt_phdr *hdr,
  118         struct crypt_params_tcrypt *params);
  119 
  120 #endif