To hack an M1 card type RFID card, the following aspects are requiredġ. The new two-way key to prevent outsiders from cracking) An unbreakable one-card system key is generated in the IC card to ensure the security issuance mechanism of the one-card system (for example, a batch of swipe card readers and bus cards are uniformly customized by the urban public transport system, and a pair of unused cards will be used between them. Therefore, the IC card must be initialized and encrypted for the purpose of leaving the factory.
When the IC card is in use, it must pass the "predefined" two-way key authentication between the IC card and the reader device before the relevant work can be carried out. IC card, also known as smart card, has encryption function, reliable data recording, easy to use, such as all-in-one card system, consumer system The real work is how to interpret the read data of different sectors and blocks, This is equivalent to different M1 corresponding business scenarios (such as rice card, water card, bus card), so to hack an M1 RFID card, it is actually hacking its corresponding data storage encryption algorithm (different bits correspond to different Business scenario) Writing data to the card through M1 password verification is only the first step (entering the door).
What we need to understand here is that you can write data to the card and It does not mean that the card has been hacked. Many times when we talk about Hack Mifare Classic/M1, we are actually talking about how to tamper with the data in the card by reading and writing, and how to reverse the encryption algorithm of the EEPROM data in the card.
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