Maxim Integrated DS1961S-F5# Secure Memory iButton

The Maxim Integrated DS1961S-F5# is a robust, secure memory iButton designed to provide a tamper-proof data storage solution with advanced cryptographic features. This device is part of Maxim's renowned iButton family, which offers high durability and ease-of-use in a variety of data logging, access control, and asset tracking applications. The DS1961S-F5# integrates 1024 bits of EEPROM memory with a unique, factory-lasered and tested 64-bit registration number that ensures absolute traceability because no two parts are alike.

One of the standout features of the DS1961S-F5# is its implementation of the challenge-and-response authentication protocol based on a secure hash algorithm (SHA-1). This cryptographic process ensures that the data integrity and the authenticity of the iButton can be verified at any time, making it an ideal choice for sensitive applications where security is paramount.

The DS1961S-F5# also includes a write cycle counter for each memory page, which can be used to verify the freshness of the data and to prevent replay attacks. The memory is partitioned into 256-bit pages, each with its own 32-bit write cycle counter and 160-bit secret. This design allows for the creation of data records that can be effectively sealed, preventing unauthorized alterations. Additionally, the device supports the creation of up to three secret keys, enabling multiple levels of access control and further enhancing security.

Constructed to withstand harsh environments, the DS1961S-F5# is encased in a durable stainless-steel can, which provides not only physical protection but also ensures a degree of water resistance, making it suitable for use in wet or corrosive environments. The iButton form factor allows for easy attachment to items or carriers and enables touch communication when placed into a reader, simplifying the interface and eliminating the need for wires or connectors.

Overall, the Maxim Integrated DS1961S-F5# is a powerful, secure, and versatile choice for applications that require reliable data storage and stringent security measures. Its combination of unique identification, cryptographic security, and environmental resilience makes it a top choice for businesses and organizations looking to safeguard their critical data.