3 ms·
I've got to say that I am very doubtful of that. A key fob just generates one time passcodes, and offers the ability to set the seed to be used. I've implemente
by tengwar2 4y ago
I've got to say that I am very doubtful of that. A key fob just generates one time passcodes, and offers the ability to set the seed to be used. I've implemented this sort of algorithm on SIMs (to be used for VPN authentication, not mobile authentication). You don't need 69kB for that. Even 1kB would be luxurious. So why would a car key fob have more than the 69kB on Voyager computers?
- flopsamjetsam 4y agoYeah, probably a bit of hyperbole :) I'm no auto guy, but this seems to be an example of a microcontroller used for key fobs: https://www.microchip.com/en-us/product/ATA5700 https://www.microchip.com/en-us/product/ATA5700 - 8-bit AVR core - 32 KB flash - 2 KB EEPROM The datasheet mentions SRAM, but no indication how much, and no indication of clock speed AFAICT.