Authenticator

DeepCover embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The DeepCover Secure Authenticator (DS28E25) combines secure challenge-and-response authentication functionality based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256) with 4Kb of user-programmable EEPROM. Additional secure memory holds a secret/key for SHA-256 operations. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. The SHA-256 message authentication code (MAC), which the DS28E25 generates, is computed from data in the user memory, the SHA-256 secret, a host controller random challenge, and the 64-bit ROM ID. A secure and low-cost factory-programming service is available to pre-program device data including the SHA-256 secret. The DS28E25 communicates over Maxim"s single-contact 1-Wire bus. Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

• Symmetric-Key-Based Bidirectional Secure Authentication Model Based on SHA-256
• Sophisticated Die-Level Methods and Circuits for Tamper Protection of Sensitive Data and Signals
• Dedicated Hardware-Accelerated SHA Engine for Generating SHA-256 MACs
• Strong Authentication with a High Bit Count, User-Programmable Secret, and Input Challenge
• 4096 Bits of User EEPROM Partitioned Into 16 Pages of 256 Bits
• User-Programmable and Irreversible EEPROM Protection Modes Including Authentication, Write and Read Protect, and OTP/EPROM Emulation
• Unique, Factory-Programmed 64-Bit Identification Number
• Single-Contact 1-Wire Interface Communicates with Host at Up to 76.9kbps
• Operating Range: 3.3V ±10%, -40°C to +85°C
• ±8kV HBM ESD Protection (typ)
• 2-Pin SFN, 2-Pin TO-92, 6-Pin TDFN, and 6-Pin TSOC Packages