USER MANUAL
TCM 410J
–
Transceiver Module
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TCM 410J User Manual | v2.3 | June 2022 | Page 17 / 46
3.
Security Functionality
TCM 410J supports the following security features defined by the Security Level Format:
◼
Encryption / Decryption modes
o
No data encryption
o
VAES 128
o
AES
–
CBC
◼
Rolling Code (RLC) modes
o
No RLC
o
2 byte RLC
o
3 byte RLC
◼
Authentication / Signing (CMAC) modes
o
No CMAC
o
3 byte CMAC
o
4 byte CMAC
◼
Teach-in modes
o
Standard teach-in (plaintext content)
o
Teach-in content protected by PSK (content protected using pre-shared key)
TCM 410J supported the following security functions:
◼
Decryption of received telegrams
◼
Authentication (CMAC validation) of received telegrams
◼
Encryption of transmitted telegrams
◼
Signing (CMAC calculation) or transmitted telegrams
◼
Handling of rolling codes (RLC) and security keys.
For details on the security functionality, please consult the EnOcean Alliance Security Speci-
fication using Reference [1
].
Use of these secure features require the use of an external EEPROM as described in Chapter
