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Windows: Show only supported encryption algorithm in the system encryption wizard for MBR

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This commit is contained in:
Mounir IDRASSI 2016-08-13 02:40:45 +02:00
parent d127393897
commit c4d4ade9d0
No known key found for this signature in database
GPG Key ID: DD0C382D5FCFB8FC
3 changed files with 29 additions and 15 deletions
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32
src/Common/Crypto.c
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@ -73,21 +73,21 @@ static EncryptionAlgorithm EncryptionAlgorithms[] =
#ifndef TC_WINDOWS_BOOT
{ { 0, 0 }, { 0, 0}, 0 }, // Must be all-zero
{ { AES, 0 }, { XTS, 0 }, 1 },
{ { SERPENT, 0 }, { XTS, 0 }, 1 },
{ { TWOFISH, 0 }, { XTS, 0 }, 1 },
{ { CAMELLIA, 0 }, { XTS, 0 }, 1 },
{ { 0, 0 }, { 0, 0}, 0, 0 }, // Must be all-zero
{ { AES, 0 }, { XTS, 0 }, 1, 1 },
{ { SERPENT, 0 }, { XTS, 0 }, 1, 1 },
{ { TWOFISH, 0 }, { XTS, 0 }, 1, 1 },
{ { CAMELLIA, 0 }, { XTS, 0 }, 1, 1 },
#if defined(CIPHER_GOST89)
{ { GOST89, 0 }, { XTS, 0 }, 1 },
{ { GOST89, 0 }, { XTS, 0 }, 0, 1 },
#endif // defined(CIPHER_GOST89)
{ { KUZNYECHIK, 0 }, { XTS, 0 }, 1 },
{ { TWOFISH, AES, 0 }, { XTS, 0 }, 1 },
{ { SERPENT, TWOFISH, AES, 0 }, { XTS, 0 }, 1 },
{ { AES, SERPENT, 0 }, { XTS, 0 }, 1 },
{ { AES, TWOFISH, SERPENT, 0 }, { XTS, 0 }, 1 },
{ { SERPENT, TWOFISH, 0 }, { XTS, 0 }, 1 },
{ { 0, 0 }, { 0, 0}, 0 } // Must be all-zero
{ { KUZNYECHIK, 0 }, { XTS, 0 }, 0, 1 },
{ { TWOFISH, AES, 0 }, { XTS, 0 }, 1, 1 },
{ { SERPENT, TWOFISH, AES, 0 }, { XTS, 0 }, 1, 1 },
{ { AES, SERPENT, 0 }, { XTS, 0 }, 1, 1 },
{ { AES, TWOFISH, SERPENT, 0 }, { XTS, 0 }, 1, 1 },
{ { SERPENT, TWOFISH, 0 }, { XTS, 0 }, 1, 1 },
{ { 0, 0 }, { 0, 0}, 0, 0 } // Must be all-zero
#else // TC_WINDOWS_BOOT
@ -684,6 +684,12 @@ int EAIsFormatEnabled (int ea)
return EncryptionAlgorithms[ea].FormatEnabled;
}
#ifndef TC_WINDOWS_BOOT
int EAIsMbrSysEncEnabled (int ea)
{
return EncryptionAlgorithms[ea].MbrSysEncEnabled;
}
#endif
// Returns TRUE if the mode of operation is supported for the encryption algorithm
BOOL EAIsModeSupported (int ea, int testedMode)

6
src/Common/Crypto.h
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@ -133,6 +133,9 @@ typedef struct
{
int Ciphers[4]; // Null terminated array of ciphers used by encryption algorithm
int Modes[LAST_MODE_OF_OPERATION + 1]; // Null terminated array of modes of operation
#ifndef TC_WINDOWS_BOOT
BOOL MbrSysEncEnabled;
#endif
int FormatEnabled;
} EncryptionAlgorithm;
@ -348,6 +351,9 @@ int EAGetLastCipher (int ea);
int EAGetNextCipher (int ea, int previousCipherId);
int EAGetPreviousCipher (int ea, int previousCipherId);
int EAIsFormatEnabled (int ea);
#ifndef TC_WINDOWS_BOOT
int EAIsMbrSysEncEnabled (int ea);
#endif
BOOL EAIsModeSupported (int ea, int testedMode);

6
src/Format/Tcformat.c
View File

@ -4060,6 +4060,9 @@ BOOL CALLBACK PageDialogProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lPa
{
int ea, hid;
wchar_t buf[100];
BOOL bIsGPT = FALSE;
if (SysEncInEffect ())
bIsGPT = BootEncObj->GetSystemDriveConfiguration().SystemPartition.IsGPT;
// Encryption algorithms
@ -4072,7 +4075,7 @@ BOOL CALLBACK PageDialogProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lPa
for (ea = EAGetFirst (); ea != 0; ea = EAGetNext (ea))
{
if (EAIsFormatEnabled (ea))
if (EAIsFormatEnabled (ea) && (!SysEncInEffect () || bIsGPT || EAIsMbrSysEncEnabled (ea)))
AddComboPair (GetDlgItem (hwndDlg, IDC_COMBO_BOX), EAGetName (buf, ea, 1), ea);
}
@ -4086,7 +4089,6 @@ BOOL CALLBACK PageDialogProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lPa
if (SysEncInEffect ())
{
BOOL bIsGPT = BootEncObj->GetSystemDriveConfiguration().SystemPartition.IsGPT;
hash_algo = bIsGPT? SHA512 : DEFAULT_HASH_ALGORITHM_BOOT;
RandSetHashFunction (hash_algo);