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Diffstat (limited to 'src/Common/Volumes.h')
| -rw-r--r-- | src/Common/Volumes.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/Common/Volumes.h b/src/Common/Volumes.h new file mode 100644 index 00000000..14e9868b --- /dev/null +++ b/src/Common/Volumes.h @@ -0,0 +1,144 @@ +/*
+ Legal Notice: Some portions of the source code contained in this file were
+ derived from the source code of Encryption for the Masses 2.02a, which is
+ Copyright (c) 1998-2000 Paul Le Roux and which is governed by the 'License
+ Agreement for Encryption for the Masses'. Modifications and additions to
+ the original source code (contained in this file) and all other portions
+ of this file are Copyright (c) 2003-2010 TrueCrypt Developers Association
+ and are governed by the TrueCrypt License 3.0 the full text of which is
+ contained in the file License.txt included in TrueCrypt binary and source
+ code distribution packages. */
+
+#ifndef TC_HEADER_Common_Volumes
+#define TC_HEADER_Common_Volumes
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Volume header version
+#define VOLUME_HEADER_VERSION 0x0005
+
+// Version number written to volume header during format;
+// specifies the minimum program version required to mount the volume
+#define TC_VOLUME_MIN_REQUIRED_PROGRAM_VERSION 0x0700
+
+// Version number written (encrypted) to the key data area of an encrypted system partition/drive;
+// specifies the minimum program version required to decrypt the system partition/drive
+#define TC_SYSENC_KEYSCOPE_MIN_REQ_PROG_VERSION 0x0700
+
+// Current volume format version (created by TrueCrypt 6.0+)
+#define TC_VOLUME_FORMAT_VERSION 2
+
+// Version number of volume format created by TrueCrypt 1.0-5.1a
+#define TC_VOLUME_FORMAT_VERSION_PRE_6_0 1
+
+// Volume header sizes
+#define TC_VOLUME_HEADER_SIZE (64 * 1024L)
+#define TC_VOLUME_HEADER_EFFECTIVE_SIZE 512
+#define TC_BOOT_ENCRYPTION_VOLUME_HEADER_SIZE 512
+#define TC_VOLUME_HEADER_SIZE_LEGACY 512
+
+#define TC_VOLUME_HEADER_GROUP_SIZE (2 * TC_VOLUME_HEADER_SIZE)
+#define TC_TOTAL_VOLUME_HEADERS_SIZE (4 * TC_VOLUME_HEADER_SIZE)
+
+// Volume offsets
+#define TC_VOLUME_HEADER_OFFSET 0
+#define TC_HIDDEN_VOLUME_HEADER_OFFSET TC_VOLUME_HEADER_SIZE
+
+// Sector sizes
+#define TC_MIN_VOLUME_SECTOR_SIZE 512
+#define TC_MAX_VOLUME_SECTOR_SIZE 4096
+#define TC_SECTOR_SIZE_FILE_HOSTED_VOLUME 512
+#define TC_SECTOR_SIZE_LEGACY 512
+
+// Sector size which can be safely assumed to be supported by all BIOSes
+#define TC_SECTOR_SIZE_BIOS 512
+
+#define TC_VOLUME_SMALL_SIZE_THRESHOLD (2 * BYTES_PER_MB) // Volume sizes below this threshold are considered small
+
+#define TC_HIDDEN_VOLUME_HOST_FS_RESERVED_END_AREA_SIZE TC_MAX_VOLUME_SECTOR_SIZE // FAT file system fills the last sector with zeroes (marked as free; observed when quick format was performed using the OS format tool).
+#define TC_HIDDEN_VOLUME_HOST_FS_RESERVED_END_AREA_SIZE_HIGH TC_VOLUME_HEADER_GROUP_SIZE // Reserved area size used for hidden volumes larger than TC_VOLUME_SMALL_SIZE_THRESHOLD
+
+#define TC_VOLUME_DATA_OFFSET TC_VOLUME_HEADER_GROUP_SIZE
+
+// The offset, in bytes, of the legacy hidden volume header position from the end of the file (a positive value).
+#define TC_HIDDEN_VOLUME_HEADER_OFFSET_LEGACY (TC_VOLUME_HEADER_SIZE_LEGACY + TC_SECTOR_SIZE_LEGACY * 2)
+
+#define TC_MAX_128BIT_BLOCK_VOLUME_SIZE BYTES_PER_PB // Security bound (128-bit block XTS mode)
+
+// Filesystem size limits
+#define TC_MIN_FAT_FS_SIZE (9 * TC_MAX_VOLUME_SECTOR_SIZE)
+#define TC_MAX_FAT_SECTOR_COUNT 0x100000000ULL
+#define TC_MIN_NTFS_FS_SIZE (884 * TC_MAX_VOLUME_SECTOR_SIZE)
+#define TC_MAX_NTFS_FS_SIZE (128LL * BYTES_PER_TB) // NTFS volume can theoretically be up to 16 exabytes, but Windows XP and 2003 limit the size to that addressable with 32-bit clusters, i.e. max size is 128 TB (if 64-KB clusters are used).
+#define TC_MAX_FAT_CLUSTER_SIZE (256 * BYTES_PER_KB) // Windows XP/Vista may crash when writing to a filesystem using clusters larger than 256 KB
+
+// Volume size limits
+#define TC_MIN_VOLUME_SIZE (TC_TOTAL_VOLUME_HEADERS_SIZE + TC_MIN_FAT_FS_SIZE)
+#define TC_MIN_VOLUME_SIZE_LEGACY (37 * TC_SECTOR_SIZE_LEGACY)
+#define TC_MAX_VOLUME_SIZE_GENERAL 0x7fffFFFFffffFFFFLL // Signed 64-bit integer file offset values
+#define TC_MAX_VOLUME_SIZE TC_MAX_128BIT_BLOCK_VOLUME_SIZE
+
+#define TC_MIN_HIDDEN_VOLUME_SIZE (TC_MIN_FAT_FS_SIZE + TC_HIDDEN_VOLUME_HOST_FS_RESERVED_END_AREA_SIZE)
+
+#define TC_MIN_HIDDEN_VOLUME_HOST_SIZE (TC_MIN_VOLUME_SIZE + TC_MIN_HIDDEN_VOLUME_SIZE + 2 * TC_MAX_VOLUME_SECTOR_SIZE)
+#define TC_MAX_HIDDEN_VOLUME_HOST_SIZE (TC_MAX_NTFS_FS_SIZE - TC_TOTAL_VOLUME_HEADERS_SIZE)
+
+#ifndef TC_NO_COMPILER_INT64
+# if TC_MAX_VOLUME_SIZE > TC_MAX_VOLUME_SIZE_GENERAL
+# error TC_MAX_VOLUME_SIZE > TC_MAX_VOLUME_SIZE_GENERAL
+# endif
+#endif
+
+#define HEADER_ENCRYPTED_DATA_SIZE (TC_VOLUME_HEADER_EFFECTIVE_SIZE - HEADER_ENCRYPTED_DATA_OFFSET)
+
+// Volume header field offsets
+#define HEADER_SALT_OFFSET 0
+#define HEADER_ENCRYPTED_DATA_OFFSET PKCS5_SALT_SIZE
+#define HEADER_MASTER_KEYDATA_OFFSET 256
+
+#define TC_HEADER_OFFSET_MAGIC 64
+#define TC_HEADER_OFFSET_VERSION 68
+#define TC_HEADER_OFFSET_REQUIRED_VERSION 70
+#define TC_HEADER_OFFSET_KEY_AREA_CRC 72
+#define TC_HEADER_OFFSET_VOLUME_CREATION_TIME 76
+#define TC_HEADER_OFFSET_MODIFICATION_TIME 84
+#define TC_HEADER_OFFSET_HIDDEN_VOLUME_SIZE 92
+#define TC_HEADER_OFFSET_VOLUME_SIZE 100
+#define TC_HEADER_OFFSET_ENCRYPTED_AREA_START 108
+#define TC_HEADER_OFFSET_ENCRYPTED_AREA_LENGTH 116
+#define TC_HEADER_OFFSET_FLAGS 124
+#define TC_HEADER_OFFSET_SECTOR_SIZE 128
+#define TC_HEADER_OFFSET_HEADER_CRC 252
+
+// Volume header flags
+#define TC_HEADER_FLAG_ENCRYPTED_SYSTEM 0x1
+#define TC_HEADER_FLAG_NONSYS_INPLACE_ENC 0x2 // The volume has been created using non-system in-place encryption
+
+
+#ifndef TC_HEADER_Volume_VolumeHeader
+
+#include "Password.h"
+
+extern BOOL ReadVolumeHeaderRecoveryMode;
+
+uint16 GetHeaderField16 (byte *header, int offset);
+uint32 GetHeaderField32 (byte *header, int offset);
+UINT64_STRUCT GetHeaderField64 (byte *header, int offset);
+int ReadVolumeHeader (BOOL bBoot, char *encryptedHeader, Password *password, PCRYPTO_INFO *retInfo, CRYPTO_INFO *retHeaderCryptoInfo);
+
+#if !defined (DEVICE_DRIVER) && !defined (TC_WINDOWS_BOOT)
+int CreateVolumeHeaderInMemory (BOOL bBoot, char *encryptedHeader, int ea, int mode, Password *password, int pkcs5_prf, char *masterKeydata, PCRYPTO_INFO *retInfo, unsigned __int64 volumeSize, unsigned __int64 hiddenVolumeSize, unsigned __int64 encryptedAreaStart, unsigned __int64 encryptedAreaLength, uint16 requiredProgramVersion, uint32 headerFlags, uint32 sectorSize, BOOL bWipeMode);
+BOOL ReadEffectiveVolumeHeader (BOOL device, HANDLE fileHandle, byte *header, DWORD *bytesRead);
+BOOL WriteEffectiveVolumeHeader (BOOL device, HANDLE fileHandle, byte *header);
+int WriteRandomDataToReservedHeaderAreas (HANDLE dev, CRYPTO_INFO *cryptoInfo, uint64 dataAreaSize, BOOL bPrimaryOnly, BOOL bBackupOnly);
+#endif
+
+#endif // !TC_HEADER_Volume_VolumeHeader
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // TC_HEADER_Common_Volumes
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