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Originally Posted by hence
This is why chip cloning with emv software will never ever work
The key is that EMV cards don't just output the same response every time. They're a*challenge-response*system: they work by reading a "challenge" message from the terminal, doing some computation within the chip, and then outputting a unique "response" message back. If you capture that response, you're only capturing*one possible output*-- the one that corresponds to the challenge it was sent. Since a terminal*should*never output the same challenge twice and the challenge*should*be unpredictable, then that capture response*should*be useless in the future.
In order to fully clone an EMV chip, you need to know the secret that's stored inside it. Since it never transmits that secret, obtaining it is impractical.
This in contrast to other identification technology such as RFID and magnetic stripes which only know how to transmit*one*number. In the case of these technologies, cloning that output is reasonably simple
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Thank you for your answer ! I will do research on RFID and magnetic stripe technologies.