ATECC608A datasheet(12/81 Pages) MICROCHIP

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2.2.3

ATECC608A-TNGLoRaWAN Slot Configuration Summary

The ATECC608A-TNGLoRaWAN has 16 slots that can be configured for different use cases. Below is a summary of

those slots with their configuration and proposed uses for the ATECC608A-TNGLoRaWAN:

Slot

Use Case

Description

Primary Configuration

NwkKey/AppKey

Derived parent keys - used for

deriving all session keys. These keys

are derived with the individual device

serial number and master parent key;

the derived keys are said to be

diversified.

Never readable/writable. Derive key can be

run with the repersonsalization key as the

parent. Must supply DeriveKeyMAC. AES key.

Device private key

RFU - optional ECC private key.

Device private key, public key can be

generated from the private key.

ECC Private Key. Public Key can be

generated, ECDH, external signs, permanent.

AppSKey

Application session key. Derived from

AppKey and other information.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

NwkSEncKey

Network session encryption key.

Derived from NwkKey and other

information.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

SNwkSIntKey

Serving network session integrity

key. Derived from NwkKey and other

information.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

FNwkSIntKey

Forwarding network session integrity

key. Derived from NwkKey and other

information.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

JSIntKey

Join server integrity key. Derived

from NwkKey and other information.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

JSEncKey

Join server encryption key. Derived

from NwkKey and other information.

AES key. Always writable, encrypted reads

with the IO Protection Key as read key.

PubInfo set to allow KDF to write this slot.

Certificate data

RFU - signer and device compressed

certificate data.

Always readable/writable. ECC public key.

Lockable.

JoinEUI/DevNonce

JoinEUI and DevNonce, stored

together in the same slot. Used in

derive key calculation.

Always readable/writable.

10 DevEUI

Slot to hold a manually assigned

IEEE EUI. Used to derive the session

keys

Always readable/writable. Lockable.

McAppSKey

Multicast application session key.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

12 McNwkSKey

Muticast network session key.

AES key. Always writable, encrypted reads

with the IO protection key as read key. PubInfo

set to allow KDF to write this slot.

ATECC608A-TNGLoRaWAN

EEPROM Memory and Data Zone Access Policies

Complete Datasheet

DS40002154B-page 12

ATECC608A Datasheet(PDF) 12 Page - Microchip Technology

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