Public/VeraCrypt
1
0
Fork 0
mirror of https://github.com/veracrypt/VeraCrypt.git synced 2025-11-11 11:08:02 -06:00
Code Activity

Windows: Fix false-positive detection of Evil-Maid attack during creation process of hidden OS by excluding the configuration byte in the boot sector whose value changes depending on the content.

Browse Source
This commit is contained in:
Mounir IDRASSI
2016-10-05 13:13:26 +02:00
parent e5a9e9239b
commit 041bc9dc0b
2 changed files with 0 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/Common/Volumes.c
View File

@@ -623,9 +623,6 @@ void ComputeBootloaderFingerprint (byte *bootLoaderBuf, unsigned int bootLoaderS
WHIRLPOOL_add (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &whirlpool); WHIRLPOOL_add (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &whirlpool);
sha512_hash (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &sha2); sha512_hash (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &sha2);
WHIRLPOOL_add (bootLoaderBuf + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)), &whirlpool);
sha512_hash (bootLoaderBuf + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)), &sha2);
WHIRLPOOL_add (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS), &whirlpool); WHIRLPOOL_add (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS), &whirlpool);
sha512_hash (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS), &sha2); sha512_hash (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS), &sha2);

2
src/Driver/DriveFilter.c
View File

@@ -268,11 +268,9 @@ static void ComputeBootLoaderFingerprint(PDEVICE_OBJECT LowerDeviceObject, byte*
#endif #endif
WHIRLPOOL_add (ioBuffer, TC_BOOT_SECTOR_PIM_VALUE_OFFSET, &whirlpool); WHIRLPOOL_add (ioBuffer, TC_BOOT_SECTOR_PIM_VALUE_OFFSET, &whirlpool);
WHIRLPOOL_add (ioBuffer + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &whirlpool); WHIRLPOOL_add (ioBuffer + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &whirlpool);
WHIRLPOOL_add (ioBuffer + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)), &whirlpool);
sha512_hash (ioBuffer, TC_BOOT_SECTOR_PIM_VALUE_OFFSET, &sha2); sha512_hash (ioBuffer, TC_BOOT_SECTOR_PIM_VALUE_OFFSET, &sha2);
sha512_hash (ioBuffer + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &sha2); sha512_hash (ioBuffer + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &sha2);
sha512_hash (ioBuffer + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)), &sha2);
// we has the reste of the bootloader, 512 bytes at a time // we has the reste of the bootloader, 512 bytes at a time
offset.QuadPart = TC_SECTOR_SIZE_BIOS; offset.QuadPart = TC_SECTOR_SIZE_BIOS;