private void CalculateVolumeChecksum(byte[] Image, UInt32 Offset)
{
UInt16 VolumeHeaderSize = ByteOperations.ReadUInt16(Image, Offset + 0x30);
ByteOperations.WriteUInt16(Image, Offset + 0x32, 0); // Clear checksum
UInt16 NewChecksum = ByteOperations.CalculateChecksum16(Image, Offset, VolumeHeaderSize);
ByteOperations.WriteUInt16(Image, Offset + 0x32, NewChecksum);
}
private bool VerifyVolumeChecksum(byte[] Image, UInt32 Offset)
{
UInt16 VolumeHeaderSize = ByteOperations.ReadUInt16(Image, Offset + 0x30);
byte[] Header = new byte[VolumeHeaderSize];
System.Buffer.BlockCopy(Image, (int)Offset, Header, 0, VolumeHeaderSize);
ByteOperations.WriteUInt16(Header, 0x32, 0); // Clear checksum
UInt16 CurrentChecksum = ByteOperations.ReadUInt16(Image, Offset + 0x32);
UInt16 NewChecksum = ByteOperations.CalculateChecksum16(Header, 0, VolumeHeaderSize);
return(CurrentChecksum == NewChecksum);
}
