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ATECC608A 데이터시트(PDF) 13 Page - Microchip Technology

부품명 ATECC608A
상세설명  ATECC608A for LoRaWAN™ Data Sheet
PDF  81 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATECC608A 데이터시트(HTML) 13 Page - Microchip Technology

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Slot
Use Case
Description
Primary Configuration
13 Repersonalization
key
Diversified key that is used to derive
a new set of NwkKey/AppKey parent
keys (Slot 0). It can also be used as
the encrypted write key for itself (Slot
13).
Never read, encrypted write.
Repersonalization key is the write key.
14 IO protection key
Used to encrypt the output of the
KDF command to encrypt newly
derived keys back to the host. It can
also be used as the encrypted read
key for all session keys.
Never readable, always writable, lockable.
ReqRand is set.
15 Reserved
2.2.4
ATECC608A-TNGLoRaWAN Detailed Slot Access Policies
The following tables provide a more detailed description of each slot key and slot configuration information along with
what commands and command modes can be run using this slot.
Table 2-6. Slot 0 Configuration Information
Slot
Configuration Value
Description of Enabled Features
0
Key:
NwkKey/AppKey(1,2)
• 128-bit AES diversified network parent key
• 128-bit AES diversified application parent key
• Writes by KDF command are not permitted
Slot:
• Derive key allowed with authorizing MAC
• Key stored in Slot 13 used for key derivation
• Contents of the slot are secret and cannot be read.
Valid commands
• DeriveKey command
• KDF AES command source key for generating other derived keys
Table 2-7. Slot 1 Configuration Information
Slot
Configuration Value
Description of Enabled Features
1
Key:
Device Private Key
• Slot contains the P256 NIST ECC private key
• A public version the of key can always be generated
Slot:
• Key generation is never permitted
• Contents of this slot are secret
• ECDH operations are permitted
• External signature of arbitrary messages is enabled
Valid commands
• GenKey - Public Key Generation
• GenKey - PublicKey Digest Generation
• Sign - External Message
ATECC608A-TNGLoRaWAN
EEPROM Memory and Data Zone Access Policies
© 2020 Microchip Technology Inc.
Complete Datasheet
DS40002154B-page 13



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