ATECC508A datasheet(68/109 Pages) MICROCHIP

Numer części	ATECC508A

Szczegółowy opis	Cryptographic Co-processor with Secure Hardware-Based Key Storage

PDF	109 Pages

Scroll/Zoom	100%

Producent	MICROCHIP [Microchip Technology]

Strona internetowa	http://www.microchip.com

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68 / 109 page

32 bytes

TempKey.value

1 byte

Opcode (always 0x15)

1 byte

Mode

1 byte

LSB of KeyID

1 byte

Zero

1 byte

SN<8>

2 bytes

SN<0:1>

25 bytes

Zeros

32 bytes

Input OtherData Parameter

If zone is Data and SlotConfig.NoMac is one, then the SHA-256 message body used to create the

resulting new TempKey consists of the following bytes:

32 bytes

Slot<KeyID>

4 bytes

OtherData

1 byte

SN<8>

2 bytes

SN<0:1>

25 bytes

Zeros

32 bytes

TempKey.value

If zone is Counter, then the SHA-256 message body used to create the resulting new TempKey consists

of the following bytes. Counter mode is supported only on the ATECC508A.

32 bytes

Zeros

1 byte

Opcode

1 byte

Param1

2 bytes

Param2

1 byte

SN<8>

2 bytes

SN<0:1>

1 byte

Zero

4 bytes

Counter<KeyID> (binary value as reported by Counter command)

20 bytes

Zeros

32 bytes

TempKey.value

If zone is “Key Config” (0x05), then the SHA-256 message body used to create the resulting new

TempKey consists of the following bytes:

32 bytes

Zeros

1 byte

Opcode

1 byte

Mode

2 bytes

Param2

ATECC508A

Security Commands

Datasheet Complete

DS20005927A-page 68

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