3.5 Encryption Modes. Silicon Labs Wireless M-Bus

3 THE STZEDN PROTOCOL STACK

In all other cases, there is no non-volatile memory write access.

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Figure 3: Non-volatile memory work flow.

3.5

Encryption Modes

Refer to table

11

for the supported encryption modes of the Wireless M-Bus protocol stack. The only mandatory encryption mode defined in OMS v.3.0.1 is mode 5.

Mode

0

1

5

Description

No encryption.

AES Counter Mode (AES-CTR).

AES Cipher Block Chaining Mode (AES-CBC) with dynamic initialization vector.

Table 11: Encryption Modes

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