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426 lines
7.8 KiB
426 lines
7.8 KiB
/*++
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Copyright (c) 1996 Microsoft Corporation
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Abstract:
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This module contains the common header information for the EFS
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DLL.
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Author:
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Robert Gu (robertg) 08-Dec-1996
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Enviroment:
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Kernel Mode Only
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Revision History:
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--*/
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#ifndef EFSRTL_H
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#define EFSRTL_H
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#include "efs.h"
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#include "efsext.h"
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#define EFS_IV 0x169119629891ad13
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#define EFS_AES_IVL 0x5816657be9161312
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#define EFS_AES_IVH 0x1989adbe44918961
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//#define ENCRYPT 0
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//#define DECRYPT 1
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#define CHUNK_SIZE 512
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#define EFS_MAX_LENGTH 256*1024
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//
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// Status of EFS context.
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//
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// Processing Status
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//
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#define NO_FURTHER_PROCESSING 0x00000000
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#define NEW_FILE_EFS_REQUIRED 0x00000001
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#define NEW_DIR_EFS_REQUIRED 0x00000002
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#define VERIFY_USER_REQUIRED 0x00000004
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#define TURN_ON_BIT_ONLY 0x00000008
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#define NO_OPEN_CACHE_CHECK 0x40000000
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#define TURN_ON_ENCRYPTION_BIT 0x80000000
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#define ACTION_REQUIRED 0x0fffffff
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//
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//
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//
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#define SYSTEM_IS_READONLY 0x00000001
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//
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// Error Status
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//
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#define CREATE_EFS_FAIL 0x00000100
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#define OPEN_EFS_FAIL 0x00000200
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#define WRITE_EFS_FAIL 0x00000400
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#define OUT_OF_MEMORY 0x00000800
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#define EFS_FORMAT_ERROR 0x00001000
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#define NTOFS_EXCEPTION 0x00002000
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//
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// Information Status
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//
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#define EFS_READ_SUCCESSFUL 0x00010000
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//
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// Stream Create Status
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//
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#define STRING_NEW_OR_EXIST_MASK 0x000f0000
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#define FILE_DIR_TYPE 0x0000000f
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#define FILE_NEW 0x00000001
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#define FILE_EXISTING 0x00000002
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#define DIRECTORY_NEW 0x00000004
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#define DIRECTORY_EXISTING 0x00000008
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#define STREAM_NEW 0x00010000
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#define STREAM_EXISTING 0x00020000
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//
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// Encryption flag
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//
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#define FILE_ENCRYPTED 0x00000002
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#define STREAM_ENCRYPTED 0x00000001
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//
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// The EFS FSCTL Input data buffer.
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//
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typedef struct _FSCTL_INPUT {
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ULONG PlainSubCode;
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ULONG EfsFsCode;
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ULONG CipherSubCode;
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UCHAR EfsFsData[1];
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} FSCTL_INPUT, *PFSCTL_INPUT;
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typedef struct _GENERAL_FS_DATA {
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UCHAR Sk1[DES_KEYSIZE];
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ULONG Hdl1;
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ULONG Hdl2;
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UCHAR Sk2[DES_KEYSIZE];
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ULONG Hdl3;
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ULONG Hdl4;
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UCHAR EfsData[1];
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} GENERAL_FS_DATA, *PGENERAL_FS_DATA;
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typedef struct _EFS_STREAM {
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ULONG Length;
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ULONG Status;
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UCHAR Private[1];
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} EFS_STREAM, *PEFS_STREAM;
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//
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// Function prototypes
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//
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typedef VOID ( * EfsEncFunc)(
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IN PUCHAR InBuffer,
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OUT PUCHAR OutBuffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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typedef VOID ( * EfsDecFunc)(
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IN OUT PUCHAR Buffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDesEnc(
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IN PUCHAR InBuffer,
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OUT PUCHAR OutBuffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDesDec(
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IN OUT PUCHAR Buffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDesXEnc(
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IN PUCHAR InBuffer,
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OUT PUCHAR OutBuffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDesXDec(
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IN OUT PUCHAR Buffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDes3Enc(
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IN PUCHAR InBuffer,
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OUT PUCHAR OutBuffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSDes3Dec(
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IN OUT PUCHAR Buffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSAesEnc(
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IN PUCHAR InBuffer,
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OUT PUCHAR OutBuffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EFSAesDec(
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IN OUT PUCHAR Buffer,
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IN PUCHAR IV,
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IN PKEY_BLOB KeyBlob,
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IN LONG Length
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);
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VOID
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EfsEncryptKeyFsData(
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IN PVOID DataBuffer,
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IN ULONG DataLength,
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IN ULONG DataEncOffset,
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IN ULONG RefdataEncOffset,
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IN ULONG RefdataEncLength
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);
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NTSTATUS
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EfsOpenFile(
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IN OBJECT_HANDLE FileHdl,
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IN OBJECT_HANDLE ParentDir OPTIONAL,
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IN PIO_STACK_LOCATION IrpSp,
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IN ULONG FileDirFlag,
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IN ULONG SystemState,
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IN PIRP_CONTEXT IrpContext,
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IN PDEVICE_OBJECT VolDo,
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IN PVOID PfileKeyContext,
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IN OUT PVOID *PContext,
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IN OUT PULONG PContextLength,
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IN OUT PVOID *PCreateContext,
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IN OUT PBOOLEAN Reserved
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);
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NTSTATUS
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EfsFileControl(
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IN PVOID PInputBuffer,
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IN ULONG InputDataLength,
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OUT PVOID POutputBuffer OPTIONAL,
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IN OUT PULONG OutputBufferLength,
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IN ULONG EncryptionFlag,
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IN ULONG AccessFlag,
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IN ULONG SystemState,
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IN ULONG FsControlCode,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN PDEVICE_OBJECT VolDo,
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IN ATTRIBUTE_HANDLE Stream,
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IN OUT PVOID *PContext,
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IN OUT PULONG PContextLength
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);
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NTSTATUS
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EfsRead(
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IN OUT PUCHAR Buffer,
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IN PLARGE_INTEGER Offset,
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IN ULONG BufferSize,
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IN PVOID Context
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);
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NTSTATUS
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EfsWrite(
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IN PUCHAR InBuffer, //Do we need in and out buffer?
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OUT PUCHAR OutBuffer,
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IN PLARGE_INTEGER Offset,
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IN ULONG BufferSize,
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IN PUCHAR Context
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);
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VOID
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EfsFreeContext(
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IN OUT PVOID *PContext
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);
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NTSTATUS
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EfsMountVolumn(
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IN PDEVICE_OBJECT VolDo,
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IN PDEVICE_OBJECT RealDevice
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);
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VOID
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EfsDismountVolumn(
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IN PDEVICE_OBJECT DeviceObject
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);
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NTSTATUS
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EfsReadEfsData(
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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OUT PVOID *EfsStreamData,
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OUT PULONG PEfsStreamLength,
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OUT PULONG Information
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);
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BOOLEAN
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EfsVerifyGeneralFsData(
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IN PUCHAR DataOffset,
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IN ULONG InputDataLength
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);
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BOOLEAN
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EfsVerifyKeyFsData(
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IN PUCHAR DataOffset,
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IN ULONG InputDataLength
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);
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NTSTATUS
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EfsDeleteEfsData(
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext
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);
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NTSTATUS
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EfsSetEncrypt(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG EncryptionFlag,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN OUT PVOID *Context,
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IN OUT PULONG PContextLength
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);
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NTSTATUS
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EfsEncryptStream(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG EncryptionFlag,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN OUT PVOID *Context,
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IN OUT PULONG PContextLength
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);
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NTSTATUS
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EfsEncryptFile(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG EncryptionFlag,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN OUT PVOID *Context
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);
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NTSTATUS
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EfsDecryptStream(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG EncryptionFlag,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN OUT PVOID *Context,
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IN OUT PULONG PContextLength
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);
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NTSTATUS
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EfsDecryptFile(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext
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);
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NTSTATUS
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EfsEncryptDir(
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG EncryptionFlag,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext
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);
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NTSTATUS
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EfsModifyEfsState(
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IN ULONG FunctionCode,
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IN PUCHAR InputData,
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IN ULONG InputDataLength,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext
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);
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ULONG
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GetEfsStreamOffset(
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IN PUCHAR InputData
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);
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NTSTATUS
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SetEfsData(
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PUCHAR InputData,
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IN ULONG InputDataLength,
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IN ULONG SystemState,
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IN OBJECT_HANDLE FileHdl,
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IN PIRP_CONTEXT IrpContext,
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IN OUT PVOID *PContext,
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IN OUT PULONG PContextLength
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);
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BOOLEAN
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EfsFindInCache(
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IN GUID *EfsId,
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IN PTOKEN_USER UserId
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);
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NTSTATUS
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EfsRefreshCache(
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IN GUID *EfsId,
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IN PTOKEN_USER UserId
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);
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BOOLEAN
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SkipCheckStream(
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IN PIO_STACK_LOCATION IrpSp,
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IN PVOID efsStreamData
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);
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#endif
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