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In this case the driver is executing two writes which a legitimate chip would ignore, but which the counterfeit responds to and actions. Those writes just happe
by jamesbrownuhh 12y ago
In this case the driver is executing two writes which a legitimate chip would ignore, but which the counterfeit responds to and actions. Those writes just happen to be the position in the counterfeit's EPROM where the USB PID is stored, and just before where the checksum is stored.
- TheLoneWolfling 12y ago"just happen" In what universe can them doing a preimage attack on the checksum "just happen"?
- jamesbrownuhh 12y agoI think you'll find I'm not in any way suggesting that it was a coincidence. It's a classic Electronic Counter Measure, exploiting the behavioural differences between the 'real' and 'fake' hardware - EXACTLY the same kind of thing you'd see being executed against pirate pay-TV smartcards, for example.