Hello team,
I am using Mifare classic 1K and Reader is ACR122U ….Problem is with authenticate the card with new keys.
When i load the keyno. 1 as FF FF FF FF FF FF. it gives below response
< FF 82 00 01 06 FF FF FF FF FF FF
> 90 00
which means load key is OK and when authenticate block4 with keyno. 01 and key type Key A or Key B response is
< FF 86 00 00 05 01 00 03 61 01
> 90 00 which is also ok..
but now if i need to load the key 1 as A5 A4 A3 A2 A1 A0 after authentication of block 4 response is
< FF 82 00 01 06 A5 A4 A3 A2 A1 A0
> 90 00
which means load key successful ,,, but when i tried to authenticate block 4 again with this same key 01 which now having A5 A4 A3 A2 A2 A1 A0 response is
< FF 86 00 00 05 01 00 04 61 01
> 63 00
Authentication failed!
Can anyone tell me why this is happening, why i am not able to authenticate block with new key ???? Its urgent pls help anyone
