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Interesting thought. What you need is a digital signature. A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender (authentication) and that the message was not altered in transit ...


I could figure out some informations about the smart card it self. The chip isn't just holding binary data which every terminal is able to access. The chip contains a micro controller which can get its own firmware set up. So the terminals aren't communicating with the stored data, they just have a API to the microcontroller. So if you want to copy the ...

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