Introduction
The Atmel CryptoAuthentication family of chips is the first cost-effective authentication devices 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 AT88SA10HS host version of CryptoAuthentication chips is capable of validating the response coming from the SHA-256 engine within an authentic CryptoAuthentication client (SA100S or SA102S), even if that response includes within the computation the serial number of the client. For detailed information on the cryptographic protocols, algorithm test values and usage models. See “Atmel AT88SA100S” and “Atmel AT88SA102S” datasheets, along with the application notes dedicated to this product family.

Features
• Secure key storage to complement the Atmel® AT88SA100S and
   the Atmel AT88SA102S devices
• Superior SHA-256 hash algorithm
• Guaranteed Unique 48-bit serial number
• High speed single wire interface, optionally shared with client
• Supply voltage: 2.7 – 5.25V
• 1.8V – 5.5V communications voltage
• <150 nA 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
• Consumable device (battery, toner, other supplies) authentication
• Network and computer access control
• Authenticated communications for control networks
• Anti-clone authentication for daughter cards
• Physical access control (electronic lock and key)