Hi,

Austin Lesea schrieb:

> Just don't go advertising them to be more than they really are: a
> convenient way to make it cost at least $5,000 to find the key.

Is it that cheap today to open the die and observe the fuses?
I have no idea, if (and how) Altera protected the key fuses against
optical inspection of die cuts. But If your right, it would be very
cheap to reengineer most Asics.

BTW Am I right, that if I use a Xilinx with security inside a
equipment, the chip could be highjacked (Chipmodded) by just removing
the power supply of the keys and applieing a new bitstream?
Which means the bitstream itself may be protected, but not the chip?
Why did nobody combine software and fuse based technologies? It would
be sufficient to have 128 bit (with secure algorithms) in SW and 128 in
fuses.

bye Thomas