17 Dec
2003
17 Dec
'03
11:17 p.m.
Peter Wayner says:
How hard is it to reprogram the DSP that comes with a cellular phone right now? I've never opened one up. Can you just unsolder a rom, read it, insert your own code for DH key exchange, add some encryption, burn a new ROM and have a secure phone?
You would also have to open up the base station for the cell, unsolder its roms, read them, insert your own code for DH key exchange, add some encryption, and put it back, and I suspect that the cellular vendor would get mad at you. Perry