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-rw-r--r--src/Common/Dlgcode.c11
-rw-r--r--src/Common/Format.c21
-rw-r--r--src/Common/Keyfiles.c59
-rw-r--r--src/Common/Password.c20
-rw-r--r--src/Driver/Ntvol.c34
-rw-r--r--src/ExpandVolume/ExpandVolume.c35
-rw-r--r--src/Format/Tcformat.c12
-rw-r--r--src/Mount/Mount.c24
8 files changed, 138 insertions, 78 deletions
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index 47578b2..5a83786 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -11238,10 +11238,8 @@ int OpenVolume (OpenVolumeContext *context, const wchar_t *volumePath, Password
else
StringCbCopyW (szCFDevice, sizeof(szCFDevice), szDiskFile);
- if (preserveTimestamps)
- write = TRUE;
- context->HostFileHandle = CreateFile (szCFDevice, GENERIC_READ | (write ? GENERIC_WRITE : 0), FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+ context->HostFileHandle = CreateFile (szCFDevice, GENERIC_READ | (write ? GENERIC_WRITE : (!context->IsDevice && preserveTimestamps? FILE_WRITE_ATTRIBUTES : 0)), FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (context->HostFileHandle == INVALID_HANDLE_VALUE)
{
@@ -11263,6 +11261,13 @@ int OpenVolume (OpenVolumeContext *context, const wchar_t *volumePath, Password
// Remember the container modification/creation date and time
if (!context->IsDevice && preserveTimestamps)
{
+ // ensure that Last Access and Last Write timestamps are not modified
+ FILETIME ftLastAccessTime;
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (context->HostFileHandle, NULL, &ftLastAccessTime, NULL);
+
if (GetFileTime (context->HostFileHandle, &context->CreationTime, &context->LastAccessTime, &context->LastWriteTime) == 0)
context->TimestampsValid = FALSE;
else
diff --git a/src/Common/Format.c b/src/Common/Format.c
index bd33f75..82c4df5 100644
--- a/src/Common/Format.c
+++ b/src/Common/Format.c
@@ -350,6 +350,19 @@ begin_format:
nStatus = ERR_OS_ERROR;
goto error;
}
+ else if (volParams->hiddenVol && bPreserveTimestamp)
+ {
+ // ensure that Last Access and Last Write timestamps are not modified
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (dev, NULL, &ftLastAccessTime, NULL);
+
+ if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
+ bTimeStampValid = FALSE;
+ else
+ bTimeStampValid = TRUE;
+ }
DisableFileCompression (dev);
@@ -380,14 +393,6 @@ begin_format:
}
}
- if (volParams->hiddenVol && !volParams->bDevice && bPreserveTimestamp)
- {
- if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
- bTimeStampValid = FALSE;
- else
- bTimeStampValid = TRUE;
- }
-
if (volParams->hwndDlg && volParams->bGuiMode) KillTimer (volParams->hwndDlg, TIMER_ID_RANDVIEW);
/* Volume header */
diff --git a/src/Common/Keyfiles.c b/src/Common/Keyfiles.c
index 686f3ca..174aed9 100644
--- a/src/Common/Keyfiles.c
+++ b/src/Common/Keyfiles.c
@@ -149,50 +149,41 @@ void KeyFileCloneAll (KeyFile *firstKeyFile, KeyFile **outputKeyFile)
static BOOL KeyFileProcess (unsigned __int8 *keyPool, unsigned __int32 keyPoolSize, KeyFile *keyFile)
{
- FILE *f;
unsigned __int8 buffer[64 * 1024];
unsigned __int32 crc = 0xffffffff;
unsigned __int32 writePos = 0;
- size_t bytesRead, totalRead = 0;
+ DWORD bytesRead, totalRead = 0;
int status = TRUE;
-
HANDLE src;
- FILETIME ftCreationTime;
- FILETIME ftLastWriteTime;
- FILETIME ftLastAccessTime;
-
- BOOL bTimeStampValid = FALSE;
+ BOOL bReadStatus = FALSE;
- /* Remember the last access time of the keyfile. It will be preserved in order to prevent
- an adversary from determining which file may have been used as keyfile. */
src = CreateFile (keyFile->FileName,
- GENERIC_READ | GENERIC_WRITE,
+ GENERIC_READ | FILE_WRITE_ATTRIBUTES,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (src != INVALID_HANDLE_VALUE)
{
- if (GetFileTime ((HANDLE) src, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime))
- bTimeStampValid = TRUE;
- }
+ /* We tell Windows not to update the Last Access timestamp in order to prevent
+ an adversary from determining which file may have been used as keyfile. */
+ FILETIME ftLastAccessTime;
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
- finally_do_arg (HANDLE, src,
+ SetFileTime (src, NULL, &ftLastAccessTime, NULL);
+ }
+ else
{
- if (finally_arg != INVALID_HANDLE_VALUE)
- CloseHandle (finally_arg);
- });
-
- f = _wfopen (keyFile->FileName, L"rb");
- if (f == NULL) return FALSE;
+ /* try to open without FILE_WRITE_ATTRIBUTES in case we are in a ReadOnly filesystem (e.g. CD) */
+ src = CreateFile (keyFile->FileName,
+ GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+ if (src == INVALID_HANDLE_VALUE)
+ return FALSE;
+ }
- while ((bytesRead = fread (buffer, 1, sizeof (buffer), f)) > 0)
+ while ((bReadStatus = ReadFile (src, buffer, sizeof (buffer), &bytesRead, NULL)) && (bytesRead > 0))
{
- size_t i;
-
- if (ferror (f))
- {
- status = FALSE;
- goto close;
- }
+ DWORD i;
for (i = 0; i < bytesRead; i++)
{
@@ -211,7 +202,7 @@ static BOOL KeyFileProcess (unsigned __int8 *keyPool, unsigned __int32 keyPoolSi
}
}
- if (ferror (f))
+ if (!bReadStatus)
{
status = FALSE;
}
@@ -223,13 +214,9 @@ static BOOL KeyFileProcess (unsigned __int8 *keyPool, unsigned __int32 keyPoolSi
close:
DWORD err = GetLastError();
- fclose (f);
- if (bTimeStampValid && !IsFileOnReadOnlyFilesystem (keyFile->FileName))
- {
- // Restore the keyfile timestamp
- SetFileTime (src, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime);
- }
+ CloseHandle (src);
+ burn (buffer, sizeof (buffer));
SetLastError (err);
return status;
diff --git a/src/Common/Password.c b/src/Common/Password.c
index ca0dd46..f2413b6 100644
--- a/src/Common/Password.c
+++ b/src/Common/Password.c
@@ -224,6 +224,19 @@ int ChangePwd (const wchar_t *lpszVolume, Password *oldPassword, int old_pkcs5,
if (dev == INVALID_HANDLE_VALUE)
goto error;
+ else if (!bDevice && bPreserveTimestamp)
+ {
+ // ensure that Last Access and Last Write timestamps are not modified
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (dev, NULL, &ftLastAccessTime, NULL);
+
+ if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
+ bTimeStampValid = FALSE;
+ else
+ bTimeStampValid = TRUE;
+ }
if (bDevice)
{
@@ -313,13 +326,6 @@ int ChangePwd (const wchar_t *lpszVolume, Password *oldPassword, int old_pkcs5,
SetRandomPoolEnrichedByUserStatus (FALSE); /* force the display of the random enriching dialog */
- if (!bDevice && bPreserveTimestamp)
- {
- if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
- bTimeStampValid = FALSE;
- else
- bTimeStampValid = TRUE;
- }
for (volumeType = TC_VOLUME_TYPE_NORMAL; volumeType < TC_VOLUME_TYPE_COUNT; volumeType++)
{
diff --git a/src/Driver/Ntvol.c b/src/Driver/Ntvol.c
index c3344fd..e88105c 100644
--- a/src/Driver/Ntvol.c
+++ b/src/Driver/Ntvol.c
@@ -303,7 +303,7 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
if (mount->bMountReadOnly || ntStatus == STATUS_ACCESS_DENIED)
{
ntStatus = ZwCreateFile (&Extension->hDeviceFile,
- GENERIC_READ | SYNCHRONIZE,
+ GENERIC_READ | (!bRawDevice && mount->bPreserveTimestamp? FILE_WRITE_ATTRIBUTES : 0) | SYNCHRONIZE,
&oaFileAttributes,
&IoStatusBlock,
NULL,
@@ -318,6 +318,26 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
NULL,
0);
+ if (!NT_SUCCESS (ntStatus) && !bRawDevice && mount->bPreserveTimestamp)
+ {
+ /* try again without FILE_WRITE_ATTRIBUTES */
+ ntStatus = ZwCreateFile (&Extension->hDeviceFile,
+ GENERIC_READ | SYNCHRONIZE,
+ &oaFileAttributes,
+ &IoStatusBlock,
+ NULL,
+ FILE_ATTRIBUTE_NORMAL |
+ FILE_ATTRIBUTE_SYSTEM,
+ exclusiveAccess ? FILE_SHARE_READ : FILE_SHARE_READ | FILE_SHARE_WRITE,
+ FILE_OPEN,
+ FILE_RANDOM_ACCESS |
+ FILE_WRITE_THROUGH |
+ (disableBuffering ? FILE_NO_INTERMEDIATE_BUFFERING : 0) |
+ FILE_SYNCHRONOUS_IO_NONALERT,
+ NULL,
+ 0);
+ }
+
if (NT_SUCCESS (ntStatus) && !mount->bMountReadOnly)
mount->VolumeMountedReadOnlyAfterAccessDenied = TRUE;
@@ -362,6 +382,18 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
Extension->fileLastWriteTime = FileBasicInfo.LastWriteTime;
Extension->fileLastChangeTime = FileBasicInfo.ChangeTime;
Extension->bTimeStampValid = TRUE;
+
+ // we tell the system not to update LastAccessTime, LastWriteTime, and ChangeTime
+ FileBasicInfo.CreationTime.QuadPart = 0;
+ FileBasicInfo.LastAccessTime.QuadPart = -1;
+ FileBasicInfo.LastWriteTime.QuadPart = -1;
+ FileBasicInfo.ChangeTime.QuadPart = -1;
+
+ ZwSetInformationFile (Extension->hDeviceFile,
+ &IoStatusBlock,
+ &FileBasicInfo,
+ sizeof (FileBasicInfo),
+ FileBasicInformation);
}
ntStatus = ZwQueryInformationFile (Extension->hDeviceFile,
diff --git a/src/ExpandVolume/ExpandVolume.c b/src/ExpandVolume/ExpandVolume.c
index ec78a36..8db2b57 100644
--- a/src/ExpandVolume/ExpandVolume.c
+++ b/src/ExpandVolume/ExpandVolume.c
@@ -535,6 +535,27 @@ static int ExpandVolume (HWND hwndDlg, wchar_t *lpszVolume, Password *pVolumePas
if (dev == INVALID_HANDLE_VALUE)
goto error;
+ else if (!bDevice && bPreserveTimestamp)
+ {
+ // ensure that Last Access and Last Time timestamps are not modified
+ // in order to preserve plausible deniability of hidden volumes (last password change time is stored in the volume header).
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (dev, NULL, &ftLastAccessTime, NULL);
+
+ /* Remember the container modification/creation date and time, (used to reset file date and time of
+ file-hosted volumes after password change (or attempt to), in order to preserve plausible deniability
+ of hidden volumes (last password change time is stored in the volume header). */
+
+ if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
+ {
+ bTimeStampValid = FALSE;
+ MessageBoxW (hwndDlg, GetString ("GETFILETIME_FAILED_PW"), lpszTitle, MB_OK | MB_ICONEXCLAMATION);
+ }
+ else
+ bTimeStampValid = TRUE;
+ }
if (bDevice)
{
@@ -628,20 +649,6 @@ static int ExpandVolume (HWND hwndDlg, wchar_t *lpszVolume, Password *pVolumePas
goto error;
}
- if (!bDevice && bPreserveTimestamp)
- {
- /* Remember the container modification/creation date and time, (used to reset file date and time of
- file-hosted volumes after password change (or attempt to), in order to preserve plausible deniability
- of hidden volumes (last password change time is stored in the volume header). */
-
- if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
- {
- bTimeStampValid = FALSE;
- MessageBoxW (hwndDlg, GetString ("GETFILETIME_FAILED_PW"), lpszTitle, MB_OK | MB_ICONEXCLAMATION);
- }
- else
- bTimeStampValid = TRUE;
- }
// Seek the volume header
headerOffset.QuadPart = TC_VOLUME_HEADER_OFFSET;
diff --git a/src/Format/Tcformat.c b/src/Format/Tcformat.c
index dba64c2..013e27c 100644
--- a/src/Format/Tcformat.c
+++ b/src/Format/Tcformat.c
@@ -3313,6 +3313,12 @@ BOOL IsSparseFile (HWND hwndDlg)
if (bPreserveTimestamp)
{
+ FILETIME ftLastAccessTime;
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (hFile, NULL, &ftLastAccessTime, NULL);
+
if (GetFileTime (hFile, NULL, &ftLastAccessTime, NULL) == 0)
bTimeStampValid = FALSE;
else
@@ -3352,6 +3358,12 @@ BOOL GetFileVolSize (HWND hwndDlg, unsigned __int64 *size)
if (bPreserveTimestamp)
{
+ FILETIME ftLastAccessTime;
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (hFile, NULL, &ftLastAccessTime, NULL);
+
if (GetFileTime (hFile, NULL, &ftLastAccessTime, NULL) == 0)
bTimeStampValid = FALSE;
else
diff --git a/src/Mount/Mount.c b/src/Mount/Mount.c
index 54dc815..9130eae 100644
--- a/src/Mount/Mount.c
+++ b/src/Mount/Mount.c
@@ -10861,6 +10861,21 @@ int RestoreVolumeHeader (HWND hwndDlg, const wchar_t *lpszVolume)
nStatus = ERR_OS_ERROR;
goto error;
}
+ else if (!bDevice && bPreserveTimestamp)
+ {
+ // ensure that Last Access timestamp is not modified
+ ftLastAccessTime.dwHighDateTime = 0xFFFFFFFF;
+ ftLastAccessTime.dwLowDateTime = 0xFFFFFFFF;
+
+ SetFileTime (dev, NULL, &ftLastAccessTime, NULL);
+
+ /* Remember the container modification/creation date and time. */
+
+ if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
+ bTimeStampValid = FALSE;
+ else
+ bTimeStampValid = TRUE;
+ }
// Determine volume host size
if (bDevice)
@@ -10931,15 +10946,6 @@ int RestoreVolumeHeader (HWND hwndDlg, const wchar_t *lpszVolume)
hostSize = fileSize.QuadPart;
}
- if (!bDevice && bPreserveTimestamp)
- {
- /* Remember the container modification/creation date and time. */
-
- if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
- bTimeStampValid = FALSE;
- else
- bTimeStampValid = TRUE;
- }
/* Read the volume header from the backup file */
char buffer[TC_VOLUME_HEADER_GROUP_SIZE];