[Cryptography] GHCQ Penetration of Belgacom
dan at geer.org
dan at geer.org
Fri Dec 19 22:59:24 EST 2014
| I think it would be very hard to find a backdoor suggested by
| Norm Hardy. Modify the CPU to detect when two specific floating
| point numbers are multiplied. When they are, execute the next
| instruction in privileged mode.
It's my second-hand understanding that it would take perhaps 3,000
gates to implement intentional sensitivity to a pre-designed kill
packet. The addition of 3,000 gates to any current chipset will
never be found in current hardware, e.g., the iPhone 6 has two
billion transistors on the system chip.
Others more knowledgeable welcome to correct my understanding.
--dan
More information about the cryptography
mailing list