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miguelbalboa / rfid

Arduino RFID Library for MFRC522
The Unlicense
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How to change key of MIFARE MF1ICS50 NFC tag ? #228

Closed AyushMarsian closed 7 years ago

AyushMarsian commented 8 years ago

Hello,

Our company is going to use NFC MIFARE MF1ICS50 with RC-522 Reader/writer module with ARDUINO. I can access the card but i don't get how to modify it's parameter,like how to change Key A and Key B of each sector, how to use and change access bits ?

I was use this function "mfrc522.MIFARE_SetAccessBits" but i can't.

can you tell me how to use this function for change KeyA and KeyB,and tutorial for learn this card and module.

Please help me as soon as possible

Thank you

ZachVan commented 8 years ago

Don't use the key option, Its been broken for years and so insecure. If your doing it for work you should use a newer card type and library.

TomHyhlik commented 8 years ago

have the same problem, please help

lube commented 8 years ago

@LoyalNine1487 Which Key option is deprecated? Which other mifare library do you recommed?

Rotzbua commented 7 years ago

LoyalNine1487 means that you should not use the key option for important data, because the crypto is broken. This means do not use it for commercial stuff!!

The function mfrc522.MIFARE_SetAccessBits do not modify anything on the hardware. It is only a helper function to calculate the bit pattern which have to be set.

Calculates the bit pattern needed for the specified access bits. In the [C1 C2 C3] tuples C1 is MSB (=4) and C3 is LSB (=1).

@AyushMarsian Can this issue closed?

AyushMarsian commented 7 years ago

Hello Friends

Thanks Rotzbua for this library, thanks friends for your replay.

I changed encryption key of my MIFARE MF1ICS50 card by modifying example "MifareClassicValueBlock".

But now I'm facing another issue, Normally my system is works well but if some time we remove card from RC522 while it's reading datablock then it's gets hanged and then it will not recover back.

I have tried soft reset by library but it's not work.

what i have to do for this ? Currently I'm continue with switch off and on power but if you have solution then please help me.

AyushMarsian commented 6 years ago

@AlbertMN Sorry but i don't understand what you are asking for ?

AlbertMN commented 6 years ago

@AyushMarsian Wrong forum, sorry :)