drivefilter.h

使用visual studio 2005 开发的开源文件、磁盘加密软件。这是6.1a版。加密自己资料的好工具。也是学习的优秀范本。结成了众多加密算法。

/*
 Copyright (c) 2008 TrueCrypt Foundation. All rights reserved.

 Governed by the TrueCrypt License 2.6 the full text of which is contained
 in the file License.txt included in TrueCrypt binary and source code
 distribution packages.
*/

#ifndef TC_HEADER_DRIVER_DRIVE_FILTER
#define TC_HEADER_DRIVER_DRIVE_FILTER

#include "TCdefs.h"
#include "Boot/Windows/BootCommon.h"
#include "EncryptedIoQueue.h"

typedef struct
{
	BOOL bRootDevice;
	BOOL IsVolumeDevice;
	BOOL IsDriveFilterDevice;
	BOOL IsVolumeFilterDevice;

	PDEVICE_OBJECT DeviceObject;
	PDEVICE_OBJECT LowerDeviceObject;
	PDEVICE_OBJECT Pdo;
	
	int64 ConfiguredEncryptedAreaStart;
	int64 ConfiguredEncryptedAreaEnd;

	uint32 VolumeHeaderSaltCrc32;
	EncryptedIoQueue Queue;
	BOOL QueueStarted;

	BOOL BootDrive;
	BOOL VolumeHeaderPresent;
	BOOL DriveMounted;

	KEVENT MountWorkItemCompletedEvent;

	CRYPTO_INFO *HeaderCryptoInfo;
	BOOL HiddenSystem;

} DriveFilterExtension;

extern BOOL BootArgsValid;
extern BootArguments BootArgs;

NTSTATUS AbortBootEncryptionSetup ();
NTSTATUS DriveFilterAddDevice (PDRIVER_OBJECT driverObject, PDEVICE_OBJECT pdo);
NTSTATUS DriveFilterDispatchIrp (PDEVICE_OBJECT DeviceObject, PIRP Irp);
void GetBootDriveVolumeProperties (PIRP irp, PIO_STACK_LOCATION irpSp);
void GetBootEncryptionAlgorithmName (PIRP irp, PIO_STACK_LOCATION irpSp);
void GetBootEncryptionStatus (PIRP irp, PIO_STACK_LOCATION irpSp);
void GetBootLoaderVersion (PIRP irp, PIO_STACK_LOCATION irpSp);
NTSTATUS GetSetupResult ();
CRYPTO_INFO *GetSystemDriveCryptoInfo ();
BOOL IsBootDriveMounted ();
BOOL IsBootEncryptionSetupInProgress ();
BOOL IsHiddenSystemRunning ();
NTSTATUS LoadBootArguments ();
static NTSTATUS SaveDriveVolumeHeader (DriveFilterExtension *Extension);
NTSTATUS StartBootEncryptionSetup (PDEVICE_OBJECT DeviceObject, PIRP irp, PIO_STACK_LOCATION irpSp);
void ReopenBootVolumeHeader (PIRP irp, PIO_STACK_LOCATION irpSp);
NTSTATUS StartDecoySystemWipe (PDEVICE_OBJECT DeviceObject, PIRP irp, PIO_STACK_LOCATION irpSp);
void StartHibernationDriverFilter ();
NTSTATUS AbortDecoySystemWipe ();
BOOL IsDecoySystemWipeInProgress();
NTSTATUS GetDecoySystemWipeResult();
void GetDecoySystemWipeStatus (PIRP irp, PIO_STACK_LOCATION irpSp);
uint64 GetBootDriveLength ();
NTSTATUS WriteBootDriveSector (PIRP irp, PIO_STACK_LOCATION irpSp);

#define TC_ENCRYPTION_SETUP_IO_BLOCK_SIZE (1280 * 1024)
#define TC_ENCRYPTION_SETUP_HEADER_UPDATE_THRESHOLD (64 * 1024 * 1024)
#define TC_HIBERNATION_WRITE_BUFFER_SIZE (128 * 1024)

#endif // TC_HEADER_DRIVER_DRIVE_FILTER