VeraCrypt
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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2020-07-21 08:59:44 (GMT)
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2020-07-21 10:47:20 (GMT)
commitf9782fb3f6393b967d2997feff85d59c01a7db80 (patch)
treebe475906690b04857b551003c47b041e2b286553
parent425e4e7d365795b820fa145403b2be372894c48b (diff)
downloadVeraCrypt-f9782fb3f6393b967d2997feff85d59c01a7db80.zip
VeraCrypt-f9782fb3f6393b967d2997feff85d59c01a7db80.tar.gz
Windows: Implement detection of Hibernate and Fast Startup and disable them if RAM encryption is activated.
-rw-r--r--src/Common/Dlgcode.c73
-rw-r--r--src/Common/Dlgcode.h1
-rw-r--r--src/Common/Language.xml1
-rw-r--r--src/Mount/Mount.c37
4 files changed, 112 insertions, 0 deletions
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index 0203a93..7a4f473 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -14896,3 +14896,76 @@ void PasswordEditDropTarget::GotDrop(CLIPFORMAT format)
}
}
+
+/*
+ * Query the status of Hibernate and Fast Startup
+ */
+
+typedef BOOLEAN (WINAPI *GetPwrCapabilitiesFn)(
+ PSYSTEM_POWER_CAPABILITIES lpspc
+);
+
+BOOL GetHibernateStatus (BOOL& bHibernateEnabled, BOOL& bHiberbootEnabled)
+{
+ wchar_t szPowrProfPath[MAX_PATH] = {0};
+ HMODULE hPowrProf = NULL;
+ BOOL bResult = FALSE;
+
+ bHibernateEnabled = bHiberbootEnabled = FALSE;
+
+ if (GetSystemDirectory(szPowrProfPath, MAX_PATH))
+ StringCchCatW (szPowrProfPath, MAX_PATH, L"\\PowrProf.dll");
+ else
+ StringCchCopyW (szPowrProfPath, MAX_PATH, L"C:\\Windows\\System32\\PowrProf.dll");
+
+ hPowrProf = LoadLibrary (szPowrProfPath);
+ if (hPowrProf)
+ {
+ GetPwrCapabilitiesFn GetPwrCapabilitiesPtr = (GetPwrCapabilitiesFn) GetProcAddress (hPowrProf, "GetPwrCapabilities");
+ if ( GetPwrCapabilitiesPtr)
+ {
+ SYSTEM_POWER_CAPABILITIES spc;
+ BOOLEAN bRet = GetPwrCapabilitiesPtr (&spc);
+ if (bRet)
+ {
+ DWORD dwHibernateEnabled = 0;
+ DWORD dwHiberbootEnabled = 0;
+
+ if (spc.SystemS4)
+ {
+ dwHibernateEnabled = 1;
+ if(!ReadLocalMachineRegistryDword (L"SYSTEM\\CurrentControlSet\\Control\\Power", L"HibernateEnabled", &dwHibernateEnabled))
+ {
+ // starting from Windows 10 1809 (Build 17763), HibernateEnabledDefault is used when HibernateEnabled is absent
+ if (IsOSVersionAtLeast (WIN_10, 0) && CurrentOSBuildNumber >= 17763)
+ ReadLocalMachineRegistryDword (L"SYSTEM\\CurrentControlSet\\Control\\Power", L"HibernateEnabledDefault", &dwHibernateEnabled);
+ }
+ }
+
+ // check if Fast Startup / Hybrid Boot is enabled
+ if (IsOSVersionAtLeast (WIN_8, 0) && spc.spare2[0])
+ {
+ dwHiberbootEnabled = 1;
+ ReadLocalMachineRegistryDword (L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Power", L"HiberbootEnabled", &dwHiberbootEnabled);
+ }
+
+ if (dwHibernateEnabled)
+ bHibernateEnabled = TRUE;
+ else
+ bHibernateEnabled = FALSE;
+
+ if (dwHiberbootEnabled)
+ bHiberbootEnabled = TRUE;
+ else
+ bHiberbootEnabled = FALSE;
+
+ bResult = TRUE;
+ }
+ }
+
+ FreeLibrary (hPowrProf);
+ }
+
+ return bResult;
+}
+
diff --git a/src/Common/Dlgcode.h b/src/Common/Dlgcode.h
index 52d94f1..2378aeb 100644
--- a/src/Common/Dlgcode.h
+++ b/src/Common/Dlgcode.h
@@ -745,6 +745,7 @@ public:
DWORD GotEnter(void);
};
+BOOL GetHibernateStatus (BOOL& bHibernateEnabled, BOOL& bHiberbootEnabled);
#endif // __cplusplus
diff --git a/src/Common/Language.xml b/src/Common/Language.xml
index 0545996..cc12e8b 100644
--- a/src/Common/Language.xml
+++ b/src/Common/Language.xml
@@ -1444,6 +1444,7 @@
<entry lang="en" key="IDC_FORCE_NEXT_BOOT_VERACRYPT">Force machine to boot on VeraCrypt in the next startup</entry>
<entry lang="en" key="IDC_FORCE_VERACRYPT_BOOT_ENTRY">Force the presence of VeraCrypt entry in the EFI firmware boot menu</entry>
<entry lang="en" key="IDC_FORCE_VERACRYPT_FIRST_BOOT_ENTRY">Force VeraCrypt entry to be the first in the EFI firmware boot menu</entry>
+ <entry lang="en" key="RAM_ENCRYPTION_DISABLE_HIBERNATE">WARNING: RAM encryption is not compatible with Windows Hibernate and Windows Fast Startup features. VeraCrypt needs to disable them before activating RAM encryption.\n\nContinue?</entry>
</localization>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="VeraCrypt">
diff --git a/src/Mount/Mount.c b/src/Mount/Mount.c
index 7d4fa81..ff66fab 100644
--- a/src/Mount/Mount.c
+++ b/src/Mount/Mount.c
@@ -11462,7 +11462,26 @@ static BOOL CALLBACK PerformanceSettingsDlgProc (HWND hwndDlg, UINT msg, WPARAM
{
BOOL originalRamEncryptionEnabled = (driverConfig & VC_DRIVER_CONFIG_ENABLE_RAM_ENCRYPTION)? TRUE : FALSE;
if (originalRamEncryptionEnabled != enableRamEncryption)
+ {
+ if (enableRamEncryption)
+ {
+ // Disable Hibernate and Fast Startup if they are enabled
+ BOOL bHibernateEnabled, bHiberbootEnabled;
+ if (GetHibernateStatus (bHibernateEnabled, bHiberbootEnabled))
+ {
+ if (bHibernateEnabled)
+ {
+ BootEncObj->WriteLocalMachineRegistryDwordValue (L"SYSTEM\\CurrentControlSet\\Control\\Power", L"HibernateEnabled", 0);
+ }
+
+ if (bHiberbootEnabled)
+ {
+ BootEncObj->WriteLocalMachineRegistryDwordValue (L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Power", L"HiberbootEnabled", 0);
+ }
+ }
+ }
rebootRequired = true;
+ }
SetDriverConfigurationFlag (VC_DRIVER_CONFIG_ENABLE_RAM_ENCRYPTION, enableRamEncryption);
}
@@ -11538,7 +11557,25 @@ static BOOL CALLBACK PerformanceSettingsDlgProc (HWND hwndDlg, UINT msg, WPARAM
BOOL enableRamEncryption = IsDlgButtonChecked (hwndDlg, IDC_ENABLE_RAM_ENCRYPTION);
if (originalRamEncryptionEnabled != enableRamEncryption)
+ {
+ if (enableRamEncryption)
+ {
+ // check if Hibernate or Fast Startup are enabled
+ BOOL bHibernateEnabled, bHiberbootEnabled;
+ if (GetHibernateStatus (bHibernateEnabled, bHiberbootEnabled))
+ {
+ if (bHibernateEnabled || bHiberbootEnabled)
+ {
+ if (AskWarnYesNo ("RAM_ENCRYPTION_DISABLE_HIBERNATE", hwndDlg) == IDNO)
+ {
+ CheckDlgButton (hwndDlg, IDC_ENABLE_RAM_ENCRYPTION, BST_UNCHECKED);
+ return 1;
+ }
+ }
+ }
+ }
Warning ("SETTING_REQUIRES_REBOOT", hwndDlg);
+ }
}
return 1;