Forum › MIFARE SmartCard IC`s › MIFARE Classic › How to change Key in Mifare classic card › Re: How to change Key in Mifare classic card
Hi Microembedded,
to change the key for a sector you need the key for accessing the sector. Let’s assume the sector use factory settings, the default key A = FFFFFFFFFFFF. With this key you authenticate to that sector and write to the sector trailer the new keys A and B and the access condition bits. To have access (according the access condition bits) to the sector you have to use the new key henceforth.
Best regards,
The MIFARE Team
to change the key for a sector you need the key for accessing the sector. Let’s assume the sector use factory settings, the default key A = FFFFFFFFFFFF. With this key you authenticate to that sector and write to the sector trailer the new keys A and B and the access condition bits. To have access (according the access condition bits) to the sector you have to use the new key henceforth.
Best regards,
The MIFARE Team
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