Cloning Mifare Classic 1K Data and Serial Number

[calmaguer]

Hello, hope this is the correct forum to ask this...

I'm planning to offer a payments product based on mifare 1k classic cards and I would like to know if there is a way to clone all the info (including the serial number) of the card from one to another.

Even without knowing the sector's KEY A/KEY B can the data be copied using special tools?

Can the card's serial number (4 byte) can be cloned/copied? Because check the card's serial against a database would be useless if this can be acomplished.

Regards

[Daniel_Gutierrez · Accepted solution]

Hello @calmaguer, Good Day!

Thank you very much for your interest in our products.

I would like to ask, are you referring to the card's UID? If this is the case, please consider that this is a Unique Identifier which has been programmed and write protected in the production test, so it cannot be changed.

You may refer to section 10 of the MIFARE Classic EV1 1K - Data Sheet and the following application note AN10927 for further details on the handling of UID's.

Please note that this product is not recommended for new designs. Instead, consider having a look at our recommended secure MIFARE DESFire Light  and  MIFARE DESFire EV3 .

My best regards,
Daniel.

[calmaguer]

Yes @Daniel_Gutierrez! I was talking about the card's 4-Byte UID like 07:6E:3D:3C (command FF CA OO OO 00).

If it cannot be copied to another card, I can build something so I can validate the card was issued from the right application before trying to access the data for the purposes of the client.

I have to work with this card type 'cause I think the client already has ordered a big lot of them. Nevertheless I'm forwarding your response so they can took in account there's other options to work with.

Thank you very much for your response.

Best regards!

Carlos Almaguer