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Diffstat (limited to 'lib/tcrypt/tcrypt.h')
| -rw-r--r-- | lib/tcrypt/tcrypt.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/lib/tcrypt/tcrypt.h b/lib/tcrypt/tcrypt.h new file mode 100644 index 0000000..ff12cbd --- /dev/null +++ b/lib/tcrypt/tcrypt.h @@ -0,0 +1,121 @@ +/* + * TCRYPT (TrueCrypt-compatible) header definition + * + * Copyright (C) 2012-2021 Red Hat, Inc. All rights reserved. + * Copyright (C) 2012-2021 Milan Broz + * + * This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef _CRYPTSETUP_TCRYPT_H +#define _CRYPTSETUP_TCRYPT_H + +#include <stdint.h> + +#define TCRYPT_HDR_SALT_LEN 64 +#define TCRYPT_HDR_IV_LEN 16 +#define TCRYPT_HDR_LEN 448 +#define TCRYPT_HDR_KEY_LEN 192 +#define TCRYPT_HDR_MAGIC "TRUE" +#define VCRYPT_HDR_MAGIC "VERA" +#define TCRYPT_HDR_MAGIC_LEN 4 + +#define TCRYPT_HDR_HIDDEN_OFFSET_OLD -1536 +#define TCRYPT_HDR_HIDDEN_OFFSET 65536 + +#define TCRYPT_HDR_HIDDEN_OFFSET_BCK -65536 +#define TCRYPT_HDR_OFFSET_BCK -131072 + +#define TCRYPT_HDR_SYSTEM_OFFSET 31744 + +#define TCRYPT_LRW_IKEY_LEN 16 +#define TCRYPT_KEY_POOL_LEN 64 +#define VCRYPT_KEY_POOL_LEN 128 +#define TCRYPT_KEYFILE_LEN 1048576 + +#define TCRYPT_HDR_FLAG_SYSTEM (1 << 0) +#define TCRYPT_HDR_FLAG_NONSYSTEM (1 << 1) + +struct tcrypt_phdr { + char salt[TCRYPT_HDR_SALT_LEN]; + + /* encrypted part, TCRYPT_HDR_LEN bytes */ + union { + struct __attribute__((__packed__)) { + char magic[TCRYPT_HDR_MAGIC_LEN]; + uint16_t version; + uint16_t version_tc; + uint32_t keys_crc32; + uint64_t _reserved1[2]; /* data/header ctime */ + uint64_t hidden_volume_size; + uint64_t volume_size; + uint64_t mk_offset; + uint64_t mk_size; + uint32_t flags; + uint32_t sector_size; + uint8_t _reserved2[120]; + uint32_t header_crc32; + char keys[256]; + } d; + char e[TCRYPT_HDR_LEN]; + }; +} __attribute__((__packed__)); + +struct crypt_device; +struct crypt_params_tcrypt; +struct crypt_dm_active_device; +struct dm_target; +struct volume_key; +struct device; + +int TCRYPT_read_phdr(struct crypt_device *cd, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params); + +int TCRYPT_init_by_name(struct crypt_device *cd, const char *name, + const char *uuid, + const struct dm_target *tgt, + struct device **device, + struct crypt_params_tcrypt *tcrypt_params, + struct tcrypt_phdr *tcrypt_hdr); + +int TCRYPT_activate(struct crypt_device *cd, + const char *name, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params, + uint32_t flags); + +int TCRYPT_deactivate(struct crypt_device *cd, + const char *name, + uint32_t flags); + +uint64_t TCRYPT_get_data_offset(struct crypt_device *cd, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params); + +uint64_t TCRYPT_get_iv_offset(struct crypt_device *cd, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params); + +int TCRYPT_get_volume_key(struct crypt_device *cd, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params, + struct volume_key **vk); + +int TCRYPT_dump(struct crypt_device *cd, + struct tcrypt_phdr *hdr, + struct crypt_params_tcrypt *params); + +#endif |