ATAES132-MA3H-ER-T Atmel, ATAES132-MA3H-ER-T Datasheet - Page 28
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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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Table 7-18. Definition of the Auth command usage field (Param2)
If the AKeyID is VolatileKey, then VolUsage.AuthOK must be 1b when the key is loaded, or authentication will fail.
Table 7-19. Input parameters
Opcode
Mode
Param1
Param2
Data
Byte #
0
0
0
0
1
Bit #
3-7
0:7
0
1
2
Name
Auth
Mode
AKeyID
Usage
InMac
Name
ReadOK
WriteOK
KeyUse
Zero
Zero
(Bytes)
0 or 16
Size
1
1
2
2
Notes
0x03
Bit 0 and 1: If 11b, then perform mutual authentication
Bits 2, 3, 4: Reserved. Must be 0b
Bit 5: If 1b, include the associated usage counter in the authentication
Bit 6: If 1b, include the SerialNum in the authentication
Bit 7: If 1b, include the first four bytes of the SmallZone in the authentication
Upper byte is always 0x00. Lower byte is the pointer to the key. Legal values: 0x00 to
0x0F, 0xFF.
Authentication usage restrictions. Ignored if mode bits 0 and 1 are 00b or 10b.
Input MAC to be verified (see Section I.3)
Notes
If 1b, then the read and EncRead commands are enabled for the user zone reads
If 0b, then the read and EncRead commands are prohibited for the user zone reads if
If 1b, then the write and EncWrite commands are enabled for the user zone writes
If 0b, then the write and EncWrite commands are prohibited for user zone writes if
If 1b, then if a key requires authentication (KeyConfig[AKeyID].AuthKey is 1b), the
If 0b, then the EncRead, EncWrite, encrypt, decrypt, legacy, KeyCompute, and
Reserved. Must be 0b
Reserved. Must be 0x00
after successful authentication.
authentication is required in ZoneConfig[UZ]. (see Section 4.1)
after successful authentication.
authentication is required in ZoneConfig[UZ]. (see Section 4.1)
EncRead, EncWrite, encrypt, decrypt, legacy, KeyCompute, and KeyLoad
commands are enabled after successful authentication.
KeyLoad commands using the authenticated key are prohibited after
authentication. (see Section 4.2)
If 10b, then perform outbound only authentication
If 01b, then perform inbound only authentication
If 00b, then perform authentication reset
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
28
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