AT97SC3204T-U2MB-10

Atmel Crypto Products Portfolio Family of Secure Authentication Solutions Atmel Crypto Products Portfolio The Atmel® Crypto Products Portfolio offers full system security solution options for a wide variety of applications. The Portfolio consists of both client and host hardware security ICs, which provide authentication, encryption and secure data storage capabilities. Why hardware security? Confidential data or secrets stored by unsecured means, such as in standard memories, are vulnerable to attack and exposure. Hardware security ICs include many sophisticated design features specifically aimed at keeping confidential data and core secrets safe from hackers, thereby protecting corporate revenue, valuable intellectual property and limiting potential liability exposure. System security is only as strong as the weakest link. This well-known phrase should remain in the forefront of any system developer’s mind as they conceptualize a secure system design. Many systems today are deployed with a hardware security solution on the client side, while the hostside secrets are stored in unsecured memories (Figure 1). For those who recognize this hostside implementation as a potential weakness, Atmel offers host-side hardware security companion ICs specifically designed to eliminate this weakness (Figure 2). Crypto Products host companion ICs implement the host algorithm in hardware and securely store and manage the host secrets, thereby strengthening the systemlevel security and reducing development time. The Crypto Products Portfolio is ideally suited for a variety of applications, and in some cases more than one product in the Portfolio can provide a solution for a given application. For example, if an application requires both authentication and secure memory storage in a wired environment, Atmel CryptoMemory® may be the best solution. If a contactless interface is desired, Atmel CryptoRF®, along with the supporting Reader IC, is an excellent choice. In cases where the strength of a 256-bit key size is preferred, Atmel CryptoAuthentication™ is the answer. Lastly, when a high security standards-based solution is required, Atmel CryptoController™ (TPM) is a great choice. 1 Applications Markets • Authentication • IP protection • Encrypted software downloads • Software and media antipiracy • Firmware copy prevention • System integrity • Secure communication • Physical, network and computer access control • Secure key exchange • • • • • • Metering GPS Printers Set top boxes Portable media players Anti-cloning of consumables • Filters • Cartridges • Chemical reagents • Batteries • PDA/Cell phones • Medical devices • E-purse Figure 1. Client only hardware security Algorithm Client Hardware Security IC Microprocessor Keys Client Host Figure 2. Client and host hardware security Client Hardware Security IC Microprocessor Client Algorithm Host Hardware Security IC Keys Host Atmel Crypto Products Portfolio Atmel Crypto Products Portfolio Family of Secure Authentication Solutions Atmel Crypto Authentication Atmel® CryptoAuthentication™ is the first family of secure authentication ICs using the SHA-256 hash algorithm with a 256-bit key length, providing robust hardware authentication at a very cost-effective price. With CryptoAuthentication, Atmel ATSHA204 developers can easily implement secure authentication and validation of physical or logical elements in virtually all microprocessor-based systems using the straightforward 256-bit challenge/ response protocol. It is ideal for handheld electronic systems or any embedded system where space is at a premium with features such as a tiny 3-pin SOT23 package and a single-wire interface. Implementing host side security to provide a full system solution is now easier than ever. The Atmel ATSHA204 includes both client and host security capability, offloading key storage and the execution algorithms from the MCU, significantly reducing both system cost and complexity. When using the Atmel ATSHA204 on the host, systems designers no longer need to worry about the cryptographic algorithms for their systems. Figure 3. Key Features Advantages • Secure authentication and key exchange • Superior SHA-256 hash algorithm • Best-in-class 256-bit key length • Guaranteed unique serial number • High-speed I2C and single-wire interface options • 1.8 – 5.5V communications • 4-Kbit EEPROM for key and data storage •