What's inside these smartcards?

[HamRadio]

Hi there,
I have some unidentified ISO7816 white smartcards, whith nothing printed
on them and I'd like to know what pic & eprom they have on board.
Anyone knows if there is a software that could guess those data if I plug
them in a smartmouse or any other programmer?
Thank you for answering.

 

[Don Bruder]

Hi there,
I have some unidentified ISO7816 white smartcards, whith nothing printed
on them and I'd like to know what pic & eprom they have on board.
Anyone knows if there is a software that could guess those data if I plug
them in a smartmouse or any other programmer?
Thank you for answering.

Usually proprietary variants of the 8051 chip. Some single-chip with
their own on-board RAM/EEPROM, sometimes with additional chips to supply
RAM/ROM/Crypto functions, or whatever else you might be able to dream
up. And often impossible to get *ACCURATE* (as in we *KNOW* that it does
such and so because this is how we designed it", rather than "Well, when
we poke it with a brown stick, it does this, and when we poke it wth a
green stick, it does that, and when we poke it with a red stick, it does
the other, so our best guess is..." from hacking/reverse engineering
them) information on without paying a *VERY* stiff license fee.

Until/unless you find out who made the cards you've got in hand, the
best you've got, or will get, is guesswork. Good luck...