MN63Y1208 Datasheet, PDF (11/120 Pages) Panasonic Semiconductor – Built-in 4-Kbit FeRAM non-volatile memory with fast write and low power consumption

Chapter 1 Overview
1.4 Encrypted Communication Function
This RFID provides an encrypted communication function.
Figure 1-3 depicts its functionality in each operation mode.
For communication between reader/writer and RFID, RF communication mode allows both encrypted and
plaintext (unencrypted) communications while serial communication mode allows only plaintext
communication.
Tunnel mode enables both encrypted and plaintext communications between reader/writer and RFID.
However, for communication between RFID and host, the mode enables only plaintext communication,
regardless of communication form (encrypted or plaintext) between reader/writer and RFID.
Encrypted communication uses Message Authentication Code (MAC) to detect falsified communication data
and to prevent access from illegal readers/writers.
RF communication mode
Encrypted (or plaintext) communication
R/W
RFID
Host
Master
Serial communication mode
Slave
Plaintext (unencrypted) communication
R/W
RFID
Host
Slave
Master
Tunnel mode
Encrypted (or plaintext) communication ^{Plaintext (unencrypted) communication}
R/W
RFID
Host
Master
Figure 1-3 Encrypted Communication Function
Slave
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