ATAES132-MA3H-ER-T Atmel, ATAES132-MA3H-ER-T Datasheet - Page 111
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ATAES132-MA3H-ER-T
Manufacturer Part Number
ATAES132-MA3H-ER-T
Description
EEPROM AES 32Kbit (MA3) I2C
Manufacturer
Atmel
Datasheet
1.ATAES132-SH-EQ.pdf
(166 pages)
Specifications of ATAES132-MA3H-ER-T
Rohs
yes
Maximum Clock Frequency
1 MHz
Operating Supply Voltage
6 V
Maximum Operating Temperature
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
UDFN-8
Interface Type
I2C
Factory Pack Quantity
5000
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I.10.
I.11.
I.12.
AuthCompute Command – Counter MAC
The counter command MAC is calculated using the following 14 bytes in the default authenticate-only block:
If any of the optional authenticate fields are selected in the mode parameter, then a second authenticate-only block is included
in the MAC calculations.
BlockRead Command
The BlockRead command does not perform a cryptographic operation and does not use or generate a MAC.
Counter Command MAC
The InMAC is calculated using the following 14 bytes in the default authenticate-only block:
If any of the optional authenticate fields are selected in the mode parameter, then a second authenticate-only block is included
in the InMAC calculation.
2 bytes ManufacturingID
11 bytes FirstBlock field containing:
1 byte
16 bytes SecondBlock field containing:
2 bytes ManufacturingID
1 byte
11 bytes FirstBlock field containing
4 bytes Usage counter value for MAC generation key, or 0x00 if not selected
8 bytes SerialNum[0:7], or 0x00 if not selected
4 bytes SmallZone[0:3], or 0x00 if not selected
1 byte
1 byte
2 bytes
2 bytes
1 byte
4 bytes
Padding of value 0x00
4 bytes
8 bytes
4 bytes
Counter Opcode (0x0A)
1 byte
2 bytes
2 bytes
1 byte
4 bytes
1 byte
Counter Opcode (0x0A)
Mode
Param1
Param2
MacFlag
0x00
Usage counter value, or 0x00 if not selected
SerialNum[0:7], or 0x00 if not selected
SmallZone[0:3], or 0x00 if not selected
Mode
Param1
Param2
MacFlag
CountValue
0x00
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
111
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