Access IS LSR118 - 7.7 MIFARE Increment Value Block (Key A or B)

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7.6.3 Example
This command successfully creates a value field in block number 4 and initialises the value to
[0x00000001]. The command uses the loaded key and authenticates against Key A in the media.
USB
Command:
[0x00][0x4A][0x04][0x00][0x00][0x0][0x01]
Response:
[0x00][0x4B][0x04][0x90][0x00]
Serial
Command:
[0x6F][0x07][0x00][0x00][0x00][0x00][0x00][0x00][0x00][0x00]
[0x00][0x4A][0x04][0x00][0x00][0x00][0x01]
Response:
[0x80][0x05][0x00][0x00][0x00][0x00][0x00][0x00][0x00][0x00]
[0x00][0x4B][0x04][0x90][0x00]
7.7 MIFARE increment value block (key A or key B)
Use this command to authenticate the given MIFARE block against the MIFARE media’s internal
Key A or B and then increment the value block.
You must load the MIFARE key using MIFARE load key (on page 40) before sending this command.
The specified block number must also be a value block or the command will fail. To create a value
block, use the MIFARE create value block (key A or key B) command (on page 44).
Note: This command is NOT applicable to MIFARE Ultralight cards and fails if executed on
Ultralight cards. Ultralight cards do not support value blocks.
7.7.1 MIFARE command bytes
MIFARE command bytes
Command header
Command code
Block number
Initial value
[0x00]
[0x0C]
Increment value block (Key A)
Block number
32-bit increment
value
(MSB first)
[0x1C]
Increment value block (Key B)
[0x4C]
Authenticate and increment value block (Key A)
[0x5C]
Authenticate and increment value block (Key B)
[0x8C] or [0xCC]
RF select, authenticate and increment value
block (Key A)
[0x9C] or [0xDC]
RF select, authenticate and increment value
block (Key B)