While that's true, the chips aren't themselves cheap; together they cost £6.90 (if I read the pages right) if you're buying from digikey by the 500.
The bigger concern is what you're actually doing with the crypto. Almost every use for crypto is intrinsically linked to transmitting the encrypted data; the amount of work to do something nontrivial would be pretty mental.
Any commercial project would probably approach the problem at a higher level; i.e. you'd buy an ARM microcontroller and a TLS stack.
The bigger concern is what you're actually doing with the crypto. Almost every use for crypto is intrinsically linked to transmitting the encrypted data; the amount of work to do something nontrivial would be pretty mental.
Any commercial project would probably approach the problem at a higher level; i.e. you'd buy an ARM microcontroller and a TLS stack.