AT88SA102S-TSU-T Atmel, AT88SA102S-TSU-T Datasheet - Page 5

• Manufacturer Part Number: AT88SA102S-TSU-T
• Description: IC PRODUCT AUTHENTICATION SOT23-
• Manufacturer: Atmel
• Series: CryptoAuthentication™r
• Type: Authentication Chipr

Specifications of AT88SA102S-TSU-T

• Applications: Networking & Communications
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Pin Count: 3
• Operating Temperature Classification: Industrial
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Interface Type: 1 Wire
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 1
• Program Memory Size: 72 bit
• Program Memory Type: ROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.6.1. SHA Computation Example
1.7.
8584F–SMEM–8/10
In order to ensure that there is no ambiguity, the following example vector is provided in addition to the sample
vectors in the NIST document. In this example, all values are listed in hex format. For all but the key, bytes are
listed in the order that they appear on the bus – first on the bus is listed on the left side of the page. The key value
below is listed in the same order as the challenge, so the 01 at the left of the key string corresponds to the first
byte in the SHA-256 document.
Key
Challenge
Opcode
Mode
KeyID
Secret Fuses
Status Fuses
Fuse MfrID
Fuse SN
ROMMfrID
ROM SN
The 88-bytes over which the digest is calculated are:
Security Features
The Atmel
release. These include an active shield over the entire surface of the part, internal memory encryption, internal
clock generation, glitch protection, voltage tamper detection and other physical design features.
Pre-programmed keys stored on the AT88SA102S are encrypted in such a way as to make retrieval of their
values via outside analysis very difficult.
Both the clock and logic supply voltage are internally generated, preventing any direct attack via the pins on these
two signals.
And the resulting digest is:
®
AT88SA102S incorporates a number of physical security features designed to protect the keys from
01030507090B0D0F11131517191B1D1F21232527292B2D2F31333537393B3D3F
020406080A0C0E10121416181A1C1E20222426282A2C2E30323436383A3C3E40
08
50
FFFF
0000111122223333
445566
77
8899AABB
CCDD
EEFF
0103…3D3F0204…3E400850FFFF00001111…EEFF
6CA7129C8DA9CE80EA6357DDCFB1DDCBBBD89ED373419A5A332D728B42642C62
(all optional information included in message)
Atmel AT88SA102S
5