Maxim Integrated DS28E01P-W18+1T Secure Authentication Chip

The DS28E01P-W18+1T from Maxim Integrated is a highly secure, single-chip solution that provides robust authentication and data protection services. This product is an essential component for systems where the integrity and security of data are of utmost importance. It is particularly useful in applications such as accessory identification, network hardware, software licensing, and consumable goods protection.

This authentication chip integrates a 1024-bit secure EEPROM with a SHA-1 engine, enabling it to perform challenge and response authentication with a host controller. The secure memory storage can be used to store cryptographic keys, certificates, or any sensitive data that requires restricted access and tamper-proof protection.

The DS28E01P-W18+1T operates over a wide voltage range of 2.8V to 5.25V and is specified over the industrial temperature range of -40°C to +85°C, making it suitable for a wide variety of environments and applications. It communicates via the 1-Wire® protocol, which allows for communication through a single data line (plus ground) for simple and cost-effective integration into existing systems.

One of the key features of this device is its unique, factory-lasered and tested 64-bit registration number that ensures no two chips are alike. This unique ID provides an absolute way to identify and authenticate the device, thus preventing counterfeiting and unauthorized usage.

In terms of security, the DS28E01P-W18+1T offers a high level of protection. Its EEPROM is write-protected after each programming session, and a secure hash algorithm (SHA-1) ensures that the stored data cannot be compromised. The device also includes a decrement-only counter that can be used to prevent replay attacks and ensure a consumable product or software license has not been duplicated or exceeded its authorized use.

For developers and system integrators, Maxim Integrated provides comprehensive support, including detailed datasheets, application notes, and reference designs, to facilitate the integration of the DS28E01P-W18+1T into their projects. Its robust security features and ease of use make it a trusted choice for securing sensitive applications in a variety of industries.