Reverse Engineering a Payment System #5

I didn't write about it, in a long time. Just to keep a few facts straight. It has been cracked. I gave a talk about it, with my little knowledge base...a team formed and it got cracked in no time. I'm not posting any information here. you don't know, where the card belongs to and i'm not gonna tell. Neither, i'm going to tell how it is stored. It was a long process encrypting it. We can change the amount of money and have the bit masks for the price storage. I'm not going to blog about it, any further. If the system is changed in a few years, probably we will open up the information, but not yet. so long