In Mifare Classic 1K tags There are 16 Sectors and each Sectors contains 4 Blocks and each block contains 16 bytes.
1. Sector 0 contains Block (0,1,2,3)
2. Sector 1 contains Block (4,5,6,7)
3. Sector 2 contains Block (8,9,10,11)
4. Sector 3 contains Block (12,13,14,15)....
Before Reading or writing from a block You must have to Authenticate its corresponding Sector using Key A or Key B of that sector. When Authentication is complete then you can read or write. using this command you can authenticate sector 0 using KEY A(60)
byte[] authenticationByte = new byte[10];
authenticationByte = new byte[] { (byte) 0xFF, (byte) 0x86, (byte) 0x00,
(byte) 0x00, (byte) 0x05, (byte) 0x00,(byte) 0x00, (byte) 0x04,
(byte) 0x60,(byte) 0x00 };
When Authentication is succes then you will get 90 00. That is Success message. Else response is 63 00 , that means authentication failed. When Authentication complete then you can read block (0,1,2,3) cause sector 0 contains 4 block and those are block (0,1,2,3).
For more details you can read [this Answer][1]. Sorry for bad English
[1]: https://stackoverflow.com/a/28253533/3073945
In Mifare Classic 1K tags There are 16 Sectors and each Sectors contains 4 Blocks and each block contains 16 bytes.
1. Sector 0 contains Block (0,1,2,3)
2. Sector 1 contains Block (4,5,6,7)
3. Sector 2 contains Block (8,9,10,11)
4. Sector 3 contains Block (12,13,14,15)....
Before Reading or writing from a block You must have to Authenticate its corresponding Sector using Key A or Key B of that sector. When Authentication is complete then you can read or write.
using this command you can authenticate sector 0 using KEY A(60)
byte[] authenticationByte = new byte[10];
authenticationByte = new byte[] { (byte) 0xFF, (byte) 0x86, (byte) 0x00,
(byte) 0x00, (byte) 0x05, (byte) 0x00,(byte) 0x00, (byte) 0x04,
(byte) 0x60,(byte) 0x00 };
When Authentication is succes then you will get 90 00. That is Success message. Else response is 63 00 , that means authentication failed. When Authentication complete then you can read block (0,1,2,3) cause sector 0 contains 4 block and those are block (0,1,2,3).
Here your problem is you are authenticating Sector 1 but trying to read data from Sector 0's blocks.
For more details you can read [this Answer][1].
Sorry for bad English
[1]: https://stackoverflow.com/a/28253533/3073945
