Cryptographic authentication device for automation

With enhanced hardware security features and increased flexibility, the ultra-low-power Atmel ATSHA204 is said to be the first turnkey, optimised authentication device to include a 4.5Kb EEPROM and a hardware SHA-256 accelerator.

Fully tested ASF software libraries are available for Atmel AVR and ARM-based microcontrollers, and are integrated within the new AVR Studio 5.

This new addition to the Atmel Cryptoauthentication range includes optimised hardware security features designed to authenticate objects, control the OEM supply chain, prevent piracy of software or other intellectual property (IP) and protect sensitive data.

The capability of this product to securely generate, store or transfer secret keys makes it the ideal complement to the AES accelerators in microcontroller-based systems, the company claims.

Because the device has 256-bit keys, system architects are assured that their designs will remain secure over the complete lifecycle of the system.

The new Atmel Cryptoauthentication device includes enhanced security features to protect the EEPROM content, including an active metal shield, internal memory encryption, secure test modes, glitch protection and voltage tamper detection.

Designed using the same methods and components as Atmel's Common Criteria Certified TPM, the device offers an internal high-quality random-number generator that can be used in crypto protocols to prevent replay attack.

Combined with many other internal hardware features, the ATSHA204 increases the difficulty of a successful hardware attack on the security devices in OEM batteries, game consoles, printer cartridges and licensed accessories.