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DeepCover Secure Authenticator with 1-Wire SHA-256 and 4Kb User EEPROM

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

Product Details

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.

Key Features

  • 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

Applications/Uses

  • Identification and authentication of consumables
  • Reference Design License Management
  • Sensor/Accessory Authentication and Calibration
  • System Intellectual Property Protection
Parametric specs for Secure Authenticators
Crypto Engine Symmetric
Applications IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Rack Card Security
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 4K x 1
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SFN/2
TDFN/6
TO92/2
TO92/3
TSOC/6
Budgetary
Price (See Notes)
$1.03 @1k
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Simplified Block Diagram

DS28E25:標準アプリケーション回路 DS28E25:標準アプリケーション回路 Zoom icon

Design & Development

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Additional Resources
Programming Options
Programming Secure Authenticators

Description

The DS28E25 evaluation system (EV system) provides the hardware and software necessary to evaluate and program the DS28E25 DeepCover® Secure Authenticator. EV system operation requires a host PC for user-friendly evaluation.
This evaluation system includes a DS9400 USB-to-I2C PC adapter, a DS2465 EV board, a DS9120Q+ evaluation socket board for a TDFN DS28E25, and five DS28E25 sample devices in a TDFN package. The EV software runs on Windows® 8, Windows 7, Windows Vista®, and Windows XP® operating systems. Detailed instructions for downloading and installing software, as well as general EV system operation are included in the EV system data sheet; software and documentation are available at the link above.
Note: The DS2465 EV board and DS9400# subcomponents are not available for direct sale outside of evaluation systems. A data sheet specific to DS9400# is not available.

View Details

Features

  • EV Kit Contains
    • Five DS28E25 Devices in a TDFN-EP Package
    • One USB-to-I2C PC Adapter (DS9400#) Provides PC Connection
    • DS2465EVKIT# Evaluation Board Provides 1-Wire Interface and SHA-256 Coprocessor
    • One EV Board (DS9120Q+) with TDFN-EP Socket Provides Easy Chip Evaluation
  • USB-to-I2C Module Contains Prolific PL-2303HXD USB-to-UART Chip
    • Enumerates as a Virtual PC COM Port
    • Windows-Certified Logo USB Device Driver Available
    • Standard USB Cable Interface
  • EV Board Contains Convenient On-Board Test Points
  • Evaluation Software Will Be Provided Along with Full Evaluation Kit Data Sheet

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SIMULATION MODELS

DS28E25 IBIS Model

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Support & Training

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Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Secure Authenticators
Crypto Engine Symmetric
Applications IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Rack Card Security
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 4K x 1
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SFN/2
TDFN/6
TO92/2
TO92/3
TSOC/6
Budgetary
Price (See Notes)
$1.03 @1k

Key Features

  • 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

Applications/Uses

  • Identification and authentication of consumables
  • Reference Design License Management
  • Sensor/Accessory Authentication and Calibration
  • System Intellectual Property Protection

Description

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.

Simplified Block Diagram

DS28E25:標準アプリケーション回路 DS28E25:標準アプリケーション回路 Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal