AT88SA102S_10 Datasheet, PDF (1/24 Pages) ATMEL Corporation – Atmel CryptoAuthentication

Features
• Secure authentication & key exchange
• Superior SHA-256 Hash Algorithm
• Best in class 256-bit key length
• Guaranteed Unique 48-bit Serial Number
• High speed single wire interface
• Supply Voltage: 2.7 – 5.25V
• 1.8 – 5.5 V Communications
• <100nA Sleep Current
• 4KV ESD protection
• Multi-level hardware security
• Secure personalization
• Green compliant (exceeds RoHS) 3-pin SOT-23 and 8-pin TSSOP or SOIC packages
Applications
• Authentication of Replaceable Items
• Software anti-piracy
• Network & Computer Access control
• Portable Media Player & GPS System
• Key exchange for encrypted downloads
• Prevention of clones for demo and eval boards
• Authenticated communications for control networks
• Anti-clone authentication for daughter cards
• Physical access control (electronic lock & key)
1. Introduction
The Atmel^® AT88SA102S is a member of the Atmel CryptoAuthentication family of
cost-effective authentication chips designed to securely authenticate an item to
which it is attached. It can also be used to exchange session keys with some
remote entity so that the system microprocessor can securely encrypt/decrypt data.
Each AT88SA102S chip contains a pre-programmed serial number which is
guaranteed to be unique. In addition, it has been designed to permit secure
personalization so that third parties can build devices containing an OEM secret
without concern for the theft of that secret.
It is the first small standard product to implement the SHA-256 hash algorithm,
which is part of the latest set of recommended algorithms by the US Government.
The 256-bit key space renders any exhaustive attacks impossible.
The CryptoAuthentication family uses a standard challenge response protocol to
simplify programming. The system generates a random number challenge and
sends it to the Atmel® AT88SA102S chip. The chip hashes that with a 256-bit key
using the SHA-256 algorithm to generate a keyed 256-bit response which is sent
back to the system.
Atmel
CryptoAuthentication
Atmel AT88SA102S
Product
Authentication Chip
8584F–SMEM–8/10