Ataes132A; Atsha204A; Atecc108A - Atmel CryptoAuthentication AT88CK490 Hardware User's Manual

ATAES132A

The ATAES132A with hardware-based key storage is a very fast, high-security, Serial 32Kb EEPROM
that enables authentication and confidential nonvolatile data storage. It is a direct
drop-in for industry standard Serial EEPROMS and implements Advanced Encryption Standard (AES)
cryptography. Access restrictions for the 16 user zones are independently configured and any key can
be used with any zone. Keys can also be used for standalone authentication. The AES-128 crypto
engine operates in AES-CCM mode to provide authentication, stored data encryption/decryption, and
Message Authentication Codes (MACs). Data encryption/decryption can be performed for internally
stored data or for small external data packets depending upon the configuration. Data encrypted by
one ATAES132A device can be decrypted by another, and vice versa. The User Memory can be
C commands. The device's secure Serial EEPROM
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accessed directly with standard SPI or I
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architecture and packages are compatible with standard SPI and I C EEPROM footprints. This allows
insertion into many existing Serial EEPROM applications.
For additional information please go to: www.atmel.com/devices/ATAES132A.aspx

ATSHA204A

The cost-effective ATSHA204A with hardware-based key storage provides flexible user-configured
security to enable a wide range of applications. With cryptographic algorithms built-in, it is easy to
design in without having cryptographic expertise. The ATSHA204A integrates the 256-bit Secure Hash
Algorithm (SHA-256) and contains 4.5Kb EEPROM for secure key and data storage. Features such as
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small outline plastic package and either an I C or a Single-Wire Interface (SWI) make the ATSHA204A
ideal for handheld electronic systems or any space-constrained embedded system.
Implementing host-side security to provide a full symmetric authentication system solution is very easy.
The ATSHA204A includes client and host security capabilities that offloads key storage and the
execution algorithms from the microcontroller, which significantly reduces system cost and complexity.
For additional information please go to: www.atmel.com/devices/atsha204a.aspx.

ATECC108A

The ATECC108A supports full 256-bit Elliptic Curve Cryptography (ECC) and has no need for secure
storage in the host. The ATECC108A includes an EEPROM array for storage of up to 16 keys,
miscellaneous read/write, read-only or secret data, consumption logging, and security configurations.
Access to memory can be restricted in a variety of ways and the configuration can be locked to prevent
changes.
The ATECC108A features defense mechanisms to prevent physical attacks on the device or logical
attacks on the data transmitted between the device and the system. Hardware restrictions on the keys
generation or use provide further defenses. Access to the device is made through a standard I 2 C
Interface at speeds of up to 1Mb/s. It supports a SWI, which can reduce the number of GPIOs required
on the system MCU. Multiple ATECC108A devices can share the same bus, which saves processor
GPIO usage in systems with multiple clients.
For additional information please go to: www.atmel.com/devices/atecc108a.aspx.
CryptoAuthentication USB Dongle Demo-Evaluation Kits [HARDWARE USER GUIDE]
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