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Windows: Add option to avoid PIM prompt in pre-boot authentication by storing PIM value unencrypted in MBR.

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This commit is contained in:
Mounir IDRASSI
2016-04-20 00:48:20 +02:00
parent bd9105794b
commit 1396269d57
14 changed files with 186 additions and 90 deletions
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src/Boot/Windows/BootEncryptedIo.cpp
+2 -2
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@@ -48,7 +48,7 @@ BiosResult ReadEncryptedSectors (uint16 destSegment, uint16 destOffset, byte dri
{
// Convert sector number to data unit number of the hidden volume
sector -= HiddenVolumeStartSector;
sector += HiddenVolumeStartUnitNo;
sector += PimValueOrHiddenVolumeStartUnitNo;
}
if (drive == EncryptedVirtualPartition.Drive)
@@ -96,7 +96,7 @@ BiosResult WriteEncryptedSectors (uint16 sourceSegment, uint16 sourceOffset, byt
writeOffset = HiddenVolumeStartSector;
writeOffset -= EncryptedVirtualPartition.StartSector;
dataUnitNo -= EncryptedVirtualPartition.StartSector;
dataUnitNo += HiddenVolumeStartUnitNo;
dataUnitNo += PimValueOrHiddenVolumeStartUnitNo;
}
while (sectorCount-- > 0)