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

• Manufacturer Part Number: AT88SA102S-TH-T
• Manufacturer: Atmel

Specifications of AT88SA102S-TH-T

• Lead Free Status / RoHS Status: Supplier Unconfirmed

1.6.1. SHA Computation Example
1.7.
8584D–SMEM–5/10
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 08
Mode
KeyID
Secret Fuses
Status Fuses
Fuse MfrID
Fuse SN
ROMMfrID
ROM SNEEFF
The 88 bytes over which the digest is calculated are:
Security Features
The AT88SA102S incorporates a number of physical security features designed to protect the keys from 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:
50
FFFF
0103…3D3F0204…3E400850FFFF00001111…EEFF
6CA7129C8DA9CE80EA6357DDCFB1DDCBBBD89ED373419A5A332D728B42642C62
01030507090B0D0F11131517191B1D1F21232527292B2D2F31333537393B3D3F
020406080A0C0E10121416181A1C1E20222426282A2C2E30323436383A3C3E40
(all optional information included in message)
0000111122223333
445566
77
8899AABB
CCDD
AT88SA102S
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