diff options
Diffstat (limited to 'src/Common/Volumes.c')
| -rw-r--r-- | src/Common/Volumes.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/Common/Volumes.c b/src/Common/Volumes.c index 35ba5bd2..3228aadc 100644 --- a/src/Common/Volumes.c +++ b/src/Common/Volumes.c @@ -1239,7 +1239,7 @@ BOOL WriteEffectiveVolumeHeader (BOOL device, HANDLE fileHandle, byte *header) // Writes randomly generated data to unused/reserved header areas. // When bPrimaryOnly is TRUE, then only the primary header area (not the backup header area) is filled with random data. // When bBackupOnly is TRUE, only the backup header area (not the primary header area) is filled with random data. -int WriteRandomDataToReservedHeaderAreas (HWND hwndDlg, HANDLE dev, CRYPTO_INFO *cryptoInfo, uint64 dataAreaSize, BOOL bPrimaryOnly, BOOL bBackupOnly) +int WriteRandomDataToReservedHeaderAreas (HWND hwndDlg, HANDLE dev, CRYPTO_INFO *cryptoInfo, uint64 dataAreaSize, BOOL bPrimaryOnly, BOOL bBackupOnly, BOOL bInPlaceEnc) { char temporaryKey[MASTER_KEYDATA_SIZE]; char originalK2[MASTER_KEYDATA_SIZE]; @@ -1298,6 +1298,13 @@ int WriteRandomDataToReservedHeaderAreas (HWND hwndDlg, HANDLE dev, CRYPTO_INFO goto final_seq; } + if (backupHeaders || !bInPlaceEnc) + { + // encrypt random data instead of existing data for better entropy, except in case of primary + // header of an in-place encrypted disk + RandgetBytes (hwndDlg, buf + TC_VOLUME_HEADER_EFFECTIVE_SIZE, sizeof (buf) - TC_VOLUME_HEADER_EFFECTIVE_SIZE, FALSE); + } + EncryptBuffer (buf + TC_VOLUME_HEADER_EFFECTIVE_SIZE, sizeof (buf) - TC_VOLUME_HEADER_EFFECTIVE_SIZE, cryptoInfo); if (!SetFilePointerEx (dev, offset, NULL, FILE_BEGIN)) |