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DS28E15：DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM

Protect Your Development Investment with Crypto-Strong Authentication and Advanced Physical Security

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 (DS28E15) combines secure challenge and response authentication functionality based on the FIPS180-3 specified Secure Hash Algorithm (SHA-256) with 512 bits 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 DS28E15 generates the SHA-256 message authentication code (MAC) 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 preprogram device data including the SHA-256 secret. The DS28E15 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.

Key Features 512-Bit EEPROM with SHA-256 Authentication for Reads and Writes Symmetric-Key-Based Bidirectional Secure Authentication Model Based on SHA-256 Strong Authentication with a High-Bit-Count User-Programmable Secret and Input Challenge 512 Bits of User EEPROM Partitioned Into Two 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 Minimalist 1-Wire Interface Lowers Cost and Interface Complexity Reduces Control, Address, Data, Power, and Programming Signals to a Single Data Pin ±8kV HBM ESD Protection (typ) 2-Pin SFN, 6-Pin TDFN-EP, and 6-Pin TSOC Packages Operating Range: 3.3V ±10%, -40°C to +85°C

DS28E15: Typical Application Circuit Applications/Uses Authentication of Consumables Secure Feature Control

DataSheet

Parametrics

Design kits & evaluation modules

• DS28E15EVKIT

Quality and Environmental Data

• DS28E15.pdf

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