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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

Product Details

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the industry's most secure key storage possible. The Deepcover Secure Authenticator (DS28EL15) combines crypto-strong bidirectional secure challenge-and-response authentication functionality with an implementation based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256). A 512-bit userprogrammable EEPROM array provides nonvolatile storage of application data. Additional protected memory holds a read-protected secret for SHA-256 operations and settings for memory protection control. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. This unique ROM ID is used as a fundamental input parameter for cryptographic operations and also serves as an electronic serial number within the application. A bidirectional security model enables two-way authentication between a host system and slave-embedded DS28EL15. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28EL15 is authentic. Host-to-slave authentication is used to protect DS28EL15 user memory from being modified by a nonauthentic host. The DS28EL15 communicates over the single-contact 1-Wire® bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multidevice 1-Wire network.

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
  • 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
  • Single-Contact 1-Wire Interface
  • Operating Range: 1.8V ±5%, -40°C to +85°C
  • ±8kV HBM ESD Protection (typ)
  • 6-Pin TDFN-EP Package

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
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 512 bits
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/6
Budgetary
Price (See Notes)
$0.96 @1k
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Simplified Block Diagram

DS28EL15: Typical Application Circuit DS28EL15: Typical Application Circuit Zoom icon

Design & Development

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Additional Resources
Programming Options
Programming Secure Authenticators

Description

The DS28EL15 evaluation system (EV system) provides the hardware and software necessary to evaluate and program the DS28EL15 DeepCover® Secure Authenticator. EV system operation requires a host PC for user-friendly evaluation.
Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

This evaluation system includes a DS9400 USB-to-I2C PC adapter, a DS2465 EV board, a DS9120Q+ evaluation socket board for a TDFN DS28EL15, and five DS28EL15 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.

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Features

  • Complete EV System:
    • Five DS28EL15 ICs in TDFN-EP Package
    • One USB-to-I2C Module (DS9400#) Provides PC Connection
    • DS2465 EV 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
  • I2C Host Interface Supports 400kHz I2C Communication Speeds
  • EV Board Contains Convenient On-Board Test Points
  • Evaluation Software Will Be Provided Along with Full Evaluation Kit Data Sheet

Description

The DS9481R-200 is a USB-to-1-Wire® adapter for easy PC connectivity to 1-Wire devices. The adapter provides an RJ11 connector with the signals to communicate with all 1-Wire and iButton® devices that support a 1.8V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM devices. To provide a total hardware solution, the DS9481R-200 can readily be used with the family of DS9120 socket adapters to create a 1-Wire PC programmer for 1-Wire slave devices (contact factory for more information). The equivalent slave hardware solution for the iButton is the DS1402D-DR8.

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Features

  • Driver Support for Windows® 8, Windows 7, and Windows Vista® Operating Systems
  • Enumerates as a Virtual PC COM Port by Use of the Prolific PL-2303HXD USB-to-UART Bridge IC
  • Emulates the DS2480B 1-Wire Line Driving Functionality
  • 1-Wire EEPROM Programming
  • 1.8V Read/Write Operation to 1-Wire/iButton Devices
  • RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Family of Socket Adapters
  • Supports Standard and Overdrive 1-Wire Communication
  • Provides Strong Pullup to 1.8V
  • Fully Compliant with USB 2.0 Specification

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Support & Training

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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
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 512 bits
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/6
Budgetary
Price (See Notes)
$0.96 @1k

Key Features

  • 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
  • Single-Contact 1-Wire Interface
  • Operating Range: 1.8V ±5%, -40°C to +85°C
  • ±8kV HBM ESD Protection (typ)
  • 6-Pin TDFN-EP Package

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 industry's most secure key storage possible. The Deepcover Secure Authenticator (DS28EL15) combines crypto-strong bidirectional secure challenge-and-response authentication functionality with an implementation based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256). A 512-bit userprogrammable EEPROM array provides nonvolatile storage of application data. Additional protected memory holds a read-protected secret for SHA-256 operations and settings for memory protection control. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. This unique ROM ID is used as a fundamental input parameter for cryptographic operations and also serves as an electronic serial number within the application. A bidirectional security model enables two-way authentication between a host system and slave-embedded DS28EL15. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28EL15 is authentic. Host-to-slave authentication is used to protect DS28EL15 user memory from being modified by a nonauthentic host. The DS28EL15 communicates over the single-contact 1-Wire® bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multidevice 1-Wire network.

Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

Simplified Block Diagram

DS28EL15: Typical Application Circuit DS28EL15: Typical Application Circuit 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