Implement support for creating and booting encrypted partition using SHA-256. Support SHA-256 for normal volumes as well.

src/Common/Apidrvr.h

@@ -241,6 +241,7 @@ typedef struct
 typedef struct
 {
 	char BootEncryptionAlgorithmName[256];
+	char BootPrfAlgorithmName[256];
 } GetBootEncryptionAlgorithmNameRequest;
 
 typedef struct

src/Common/BootEncryption.cpp

@@ -375,6 +375,7 @@ namespace VeraCrypt
 		RescueIsoImage (nullptr),
 		RescueVolumeHeaderValid (false),
 		SelectedEncryptionAlgorithmId (0),
+		SelectedPrfAlgorithmId (0),
 		VolumeHeaderValid (false)
 	{
       HiddenOSCandidatePartition.IsGPT = FALSE;
@@ -975,11 +976,16 @@ namespace VeraCrypt
 		ZeroMemory (buffer, bufferSize);
 
 		int ea = 0;
+		int pkcs5_prf = 0;
 		if (GetStatus().DriveMounted)
 		{
 			try
 			{
 				GetBootEncryptionAlgorithmNameRequest request;
+				// since we added new field to GetBootEncryptionAlgorithmNameRequest since version 1.0f
+				// we zero all the structure so that if we are talking to an older driver, the field
+				// BootPrfAlgorithmName will be an empty string
+				ZeroMemory(&request, sizeof(request));
 				CallDriver (TC_IOCTL_GET_BOOT_ENCRYPTION_ALGORITHM_NAME, NULL, 0, &request, sizeof (request));
 
 				if (_stricmp (request.BootEncryptionAlgorithmName, "AES") == 0)
@@ -988,6 +994,13 @@ namespace VeraCrypt
 					ea = SERPENT;
 				else if (_stricmp (request.BootEncryptionAlgorithmName, "Twofish") == 0)
 					ea = TWOFISH;
+
+				if (_stricmp(request.BootPrfAlgorithmName, "SHA-256") == 0)
+					pkcs5_prf = SHA256;
+				else if (_stricmp(request.BootPrfAlgorithmName, "RIPEMD-160") == 0)
+					pkcs5_prf = RIPEMD160;
+				else if (strlen(request.BootPrfAlgorithmName) == 0) // case of version < 1.0f
+					pkcs5_prf = RIPEMD160;
 			}
 			catch (...)
 			{
@@ -996,36 +1009,77 @@ namespace VeraCrypt
 					VOLUME_PROPERTIES_STRUCT properties;
 					GetVolumeProperties (&properties);
 					ea = properties.ea;
+					pkcs5_prf = properties.pkcs5;
 				}
 				catch (...) { }
 			}
 		}
 		else
 		{
-			if (SelectedEncryptionAlgorithmId == 0)
+			if (SelectedEncryptionAlgorithmId == 0 || SelectedPrfAlgorithmId == 0)
 				throw ParameterIncorrect (SRC_POS);
 
 			ea = SelectedEncryptionAlgorithmId;
+			pkcs5_prf = SelectedPrfAlgorithmId;
 		}
 
-		int bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR : IDR_BOOT_SECTOR;
+		// Only RIPEMD160 and SHA-256 are supported for boot loader
-		int bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER : IDR_BOOT_LOADER;
+		if (pkcs5_prf != RIPEMD160 && pkcs5_prf != SHA256)
+			throw ParameterIncorrect (SRC_POS);
+
+		int bootSectorId = 0;
+		int bootLoaderId = 0;
+
+		if (pkcs5_prf == SHA256)
+		{
+			bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_SHA2 : IDR_BOOT_SECTOR_SHA2;
+			bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_SHA2 : IDR_BOOT_LOADER_SHA2;
+		}
+		else
+		{
+			bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR : IDR_BOOT_SECTOR;
+			bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER : IDR_BOOT_LOADER;
+		}
 
 		switch (ea)
 		{
 		case AES:
+			if (pkcs5_prf == SHA256)
+			{
+				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_AES_SHA2 : IDR_BOOT_SECTOR_AES_SHA2;
+				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_AES_SHA2 : IDR_BOOT_LOADER_AES_SHA2;
+			}
+			else
+			{
 				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_AES : IDR_BOOT_SECTOR_AES;
 				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_AES : IDR_BOOT_LOADER_AES;
+			}
 			break;
 
 		case SERPENT:
+			if (pkcs5_prf == SHA256)
+			{
+				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_SERPENT_SHA2 : IDR_BOOT_SECTOR_SERPENT_SHA2;
+				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_SERPENT_SHA2 : IDR_BOOT_LOADER_SERPENT_SHA2;
+			}
+			else
+			{
 				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_SERPENT : IDR_BOOT_SECTOR_SERPENT;
 				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_SERPENT : IDR_BOOT_LOADER_SERPENT;
+			}
 			break;
 
 		case TWOFISH:
+			if (pkcs5_prf == SHA256)
+			{
+				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_TWOFISH_SHA2 : IDR_BOOT_SECTOR_TWOFISH_SHA2;
+				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_TWOFISH_SHA2 : IDR_BOOT_LOADER_TWOFISH_SHA2;
+			}
+			else
+			{
 				bootSectorId = rescueDisk ? IDR_RESCUE_BOOT_SECTOR_TWOFISH : IDR_BOOT_SECTOR_TWOFISH;
 				bootLoaderId = rescueDisk ? IDR_RESCUE_LOADER_TWOFISH : IDR_BOOT_LOADER_TWOFISH;
+			}
 			break;
 		}
 
@@ -1084,7 +1138,7 @@ namespace VeraCrypt
 
 			buffer[TC_BOOT_SECTOR_CONFIG_OFFSET] |= TC_BOOT_CFG_FLAG_BACKUP_LOADER_AVAILABLE;
 		}
-		else if (!rescueDisk && bootLoaderId != IDR_BOOT_LOADER)
+		else if (!rescueDisk && bootLoaderId != IDR_BOOT_LOADER && bootLoaderId != IDR_BOOT_LOADER_SHA2)
 		{
 			throw ParameterIncorrect (SRC_POS);
 		}
@@ -2253,6 +2307,7 @@ namespace VeraCrypt
 		BackupSystemLoader();
 
 		SelectedEncryptionAlgorithmId = ea;
+		SelectedPrfAlgorithmId = pkcs5;
 	}
 
 
@@ -2307,6 +2362,7 @@ namespace VeraCrypt
 		}
 
 		SelectedEncryptionAlgorithmId = ea;
+		SelectedPrfAlgorithmId = pkcs5;
 		CreateVolumeHeader (volumeSize, encryptedAreaStart, &password, ea, mode, pkcs5);
 		
 		if (!rescueIsoImagePath.empty())

src/Common/BootEncryption.h

@@ -215,6 +215,7 @@ namespace VeraCrypt
 		HWND ParentWindow;
 		SystemDriveConfiguration DriveConfig;
 		int SelectedEncryptionAlgorithmId;
+		int SelectedPrfAlgorithmId;
 		Partition HiddenOSCandidatePartition;
 		byte *RescueIsoImage;
 		byte RescueVolumeHeader[TC_BOOT_ENCRYPTION_VOLUME_HEADER_SIZE];

src/Common/Common.rc

@@ -449,6 +449,17 @@ IDR_BOOT_LOADER         BIN                     "..\\Boot\\Windows\\Release\\Boo
 IDR_BOOT_LOADER_AES     BIN                     "..\\Boot\\Windows\\Release_AES\\BootLoader.com.gz"
 IDR_BOOT_LOADER_SERPENT BIN                     "..\\Boot\\Windows\\Release_Serpent\\BootLoader.com.gz"
 IDR_BOOT_LOADER_TWOFISH BIN                     "..\\Boot\\Windows\\Release_Twofish\\BootLoader.com.gz"
+
+IDR_BOOT_SECTOR_SHA2         BIN                     "..\\Boot\\Windows\\Release_SHA2\\BootSector.bin"
+IDR_BOOT_SECTOR_AES_SHA2     BIN                     "..\\Boot\\Windows\\Release_AES_SHA2\\BootSector.bin"
+IDR_BOOT_SECTOR_SERPENT_SHA2 BIN                     "..\\Boot\\Windows\\Release_Serpent_SHA2\\BootSector.bin"
+IDR_BOOT_SECTOR_TWOFISH_SHA2 BIN                     "..\\Boot\\Windows\\Release_Twofish_SHA2\\BootSector.bin"
+IDR_BOOT_LOADER_SHA2         BIN                     "..\\Boot\\Windows\\Release_SHA2\\BootLoader.com.gz"
+IDR_BOOT_LOADER_AES_SHA2	  BIN                     "..\\Boot\\Windows\\Release_AES_SHA2\\BootLoader.com.gz"
+IDR_BOOT_LOADER_SERPENT_SHA2 BIN                     "..\\Boot\\Windows\\Release_Serpent_SHA2\\BootLoader.com.gz"
+IDR_BOOT_LOADER_TWOFISH_SHA2 BIN                     "..\\Boot\\Windows\\Release_Twofish_SHA2\\BootLoader.com.gz"
+
+
 IDR_RESCUE_BOOT_SECTOR  BIN                     "..\\Boot\\Windows\\Rescue\\BootSector.bin"
 IDR_RESCUE_BOOT_SECTOR_AES BIN                     "..\\Boot\\Windows\\Rescue_AES\\BootSector.bin"
 IDR_RESCUE_BOOT_SECTOR_SERPENT BIN                     "..\\Boot\\Windows\\Rescue_Serpent\\BootSector.bin"
@@ -458,6 +469,15 @@ IDR_RESCUE_LOADER_AES   BIN                     "..\\Boot\\Windows\\Rescue_AES\\
 IDR_RESCUE_LOADER_SERPENT BIN                     "..\\Boot\\Windows\\Rescue_Serpent\\BootLoader.com.gz"
 IDR_RESCUE_LOADER_TWOFISH BIN                     "..\\Boot\\Windows\\Rescue_Twofish\\BootLoader.com.gz"
 
+IDR_RESCUE_BOOT_SECTOR_SHA2  BIN                     "..\\Boot\\Windows\\Rescue_SHA2\\BootSector.bin"
+IDR_RESCUE_BOOT_SECTOR_AES_SHA2 BIN                     "..\\Boot\\Windows\\Rescue_AES_SHA2\\BootSector.bin"
+IDR_RESCUE_BOOT_SECTOR_SERPENT_SHA2 BIN                     "..\\Boot\\Windows\\Rescue_Serpent_SHA2\\BootSector.bin"
+IDR_RESCUE_BOOT_SECTOR_TWOFISH_SHA2 BIN                     "..\\Boot\\Windows\\Rescue_Twofish_SHA2\\BootSector.bin"
+IDR_RESCUE_LOADER_SHA2   BIN                     "..\\Boot\\Windows\\Rescue_SHA2\\BootLoader.com.gz"
+IDR_RESCUE_LOADER_AES_SHA2   BIN                 "..\\Boot\\Windows\\Rescue_AES_SHA2\\BootLoader.com.gz"
+IDR_RESCUE_LOADER_SERPENT_SHA2 BIN               "..\\Boot\\Windows\\Rescue_Serpent_SHA2\\BootLoader.com.gz"
+IDR_RESCUE_LOADER_TWOFISH_SHA2 BIN               "..\\Boot\\Windows\\Rescue_Twofish_SHA2\\BootLoader.com.gz"
+
 /////////////////////////////////////////////////////////////////////////////
 //
 // XML

src/Common/Dlgcode.c

@@ -4363,6 +4363,7 @@ static BOOL PerformBenchmark(HWND hwndDlg)
 		WHIRLPOOL_CTX	wctx;
 		RMD160_CTX		rctx;
 		sha512_ctx		s2ctx;
+		sha256_ctx		s256ctx;
 		int hid;
 
 		for (hid = FIRST_PRF_ID; hid <= LAST_PRF_ID; hid++) 
@@ -4379,6 +4380,12 @@ static BOOL PerformBenchmark(HWND hwndDlg)
 				sha512_end ((unsigned char *) digest, &s2ctx);
 				break;
 
+			case SHA256:
+				sha256_begin (&s256ctx);
+				sha256_hash (lpTestBuffer, benchmarkBufferSize, &s256ctx);
+				sha256_end ((unsigned char *) digest, &s256ctx);
+				break;
+
 			case RIPEMD160:
 				RMD160Init(&rctx);
 				RMD160Update(&rctx, lpTestBuffer, benchmarkBufferSize);
@@ -4433,6 +4440,11 @@ static BOOL PerformBenchmark(HWND hwndDlg)
 					derive_key_sha512 ("passphrase-1234567890", 21, tmp_salt, 64, get_pkcs5_iteration_count(thid, FALSE), dk, MASTER_KEYDATA_SIZE);
 					break;
 
+				case SHA256:
+					/* PKCS-5 test with HMAC-SHA-256 used as the PRF */
+					derive_key_sha256 ("passphrase-1234567890", 21, tmp_salt, 64, get_pkcs5_iteration_count(thid, FALSE), dk, MASTER_KEYDATA_SIZE);
+					break;
+
 				case RIPEMD160:
 					/* PKCS-5 test with HMAC-RIPEMD-160 used as the PRF */
 					derive_key_ripemd160 (FALSE, "passphrase-1234567890", 21, tmp_salt, 64, get_pkcs5_iteration_count(thid, FALSE), dk, MASTER_KEYDATA_SIZE);

src/Common/EncryptionThreadPool.c

@@ -173,6 +173,11 @@ static TC_THREAD_PROC EncryptionThreadProc (void *threadArg)
 					workItem->KeyDerivation.IterationCount, workItem->KeyDerivation.DerivedKey, GetMaxPkcs5OutSize());
 				break;
 
+			case SHA256:
+				derive_key_sha256 (workItem->KeyDerivation.Password, workItem->KeyDerivation.PasswordLength, workItem->KeyDerivation.Salt, PKCS5_SALT_SIZE,
+					workItem->KeyDerivation.IterationCount, workItem->KeyDerivation.DerivedKey, GetMaxPkcs5OutSize());
+				break;
+
 			default:		
 				TC_THROW_FATAL_EXCEPTION;
 			} 

src/Common/Random.c

@@ -210,6 +210,7 @@ BOOL Randmix ()
 		WHIRLPOOL_CTX	wctx;
 		RMD160_CTX		rctx;
 		sha512_ctx		sctx;
+		sha256_ctx		s256ctx;
 		int poolIndex, digestIndex, digestSize;
 
 		switch (HashFunction)
@@ -222,6 +223,10 @@ BOOL Randmix ()
 			digestSize = SHA512_DIGESTSIZE;
 			break;
 
+		case SHA256:
+			digestSize = SHA256_DIGESTSIZE;
+			break;
+
 		case WHIRLPOOL:
 			digestSize = WHIRLPOOL_DIGESTSIZE;
 			break;
@@ -250,6 +255,12 @@ BOOL Randmix ()
 				sha512_end (hashOutputBuffer, &sctx);
 				break;
 
+			case SHA256:
+				sha256_begin (&s256ctx);
+				sha256_hash (pRandPool, RNG_POOL_SIZE, &s256ctx);
+				sha256_end (hashOutputBuffer, &s256ctx);
+				break;
+
 			case WHIRLPOOL:
 				WHIRLPOOL_init (&wctx);
 				WHIRLPOOL_add (pRandPool, RNG_POOL_SIZE * 8, &wctx);
@@ -280,6 +291,10 @@ BOOL Randmix ()
 			burn (&sctx, sizeof(sctx));		
 			break;
 
+		case SHA256:
+			burn (&s256ctx, sizeof(s256ctx));		
+			break;
+
 		case WHIRLPOOL:
 			burn (&wctx, sizeof(wctx));		
 			break;

src/Common/Resource.h

@@ -43,6 +43,22 @@
 #define IDD_NEW_TOKEN_KEYFILE           539
 #define IDD_RANDOM_POOL_ENRICHMENT      540
 #define IDI_TRUECRYPT_MOUNTED_ICON      541
+#define IDR_BOOT_SECTOR_SHA2             542
+#define IDR_BOOT_SECTOR_AES_SHA2         543
+#define IDR_BOOT_SECTOR_SERPENT_SHA2     544
+#define IDR_BOOT_SECTOR_TWOFISH_SHA2     545
+#define IDR_BOOT_LOADER_SHA2            546
+#define IDR_BOOT_LOADER_AES_SHA2        547
+#define IDR_BOOT_LOADER_SERPENT_SHA2    548
+#define IDR_BOOT_LOADER_TWOFISH_SHA2	 549
+#define IDR_RESCUE_BOOT_SECTOR_SHA2          550
+#define IDR_RESCUE_BOOT_SECTOR_AES_SHA2      551
+#define IDR_RESCUE_BOOT_SECTOR_SERPENT_SHA2  552
+#define IDR_RESCUE_BOOT_SECTOR_TWOFISH_SHA2  553
+#define IDR_RESCUE_LOADER_SHA2          554
+#define IDR_RESCUE_LOADER_AES_SHA2      555
+#define IDR_RESCUE_LOADER_SERPENT_SHA2  556
+#define IDR_RESCUE_LOADER_TWOFISH_SHA2  557
 #define IDC_HW_AES_LABEL_LINK           5000
 #define IDC_HW_AES                      5001
 #define IDC_PARALLELIZATION_LABEL_LINK  5002

src/Driver/DriveFilter.c

@@ -1621,6 +1621,7 @@ void GetBootEncryptionAlgorithmName (PIRP irp, PIO_STACK_LOCATION irpSp)
 		{
 			GetBootEncryptionAlgorithmNameRequest *request = (GetBootEncryptionAlgorithmNameRequest *) irp->AssociatedIrp.SystemBuffer;
 			EAGetName (request->BootEncryptionAlgorithmName, BootDriveFilterExtension->Queue.CryptoInfo->ea);
+			HashGetName2 (request->BootPrfAlgorithmName, BootDriveFilterExtension->Queue.CryptoInfo->pkcs5);
 
 			irp->IoStatus.Information = sizeof (GetBootEncryptionAlgorithmNameRequest);
 			irp->IoStatus.Status = STATUS_SUCCESS;