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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

Key Features

Parametric specs for Secure Authenticators
Crypto Engine Symmetric
End Equipment 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)
1.02
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Simplified Block Diagram

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Parameters

Parametric specs for Secure Authenticators
Crypto Engine Symmetric
End Equipment 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)
1.02

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 .