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1-Wire ECDSA Secure Authenticator

The DS28E30 Provides a Highly Secure and Easily Deployed Turnkey Authentication Solution with ECDSA.

Product Details

Key Features

Parametric specs for Secure Authenticators
Crypto Engine Asymmetric
End Equipment Asset Tracking
Battery ID and Authentication
Identification and Calibration
Medical Consumable ID
Medical Sensor Authentication and Calibration
Secure Authentication of Accessories and Peripherals
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 3Kbit
Oper. Temp. (°C) -40 to +85
Package/Pins ULTRA THIN WLP/4
Budgetary
Price (See Notes)
0.66
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Simplified Block Diagram

Technical Docs

Data Sheet 1-Wire ECDSA Secure Authenticator Feb 03, 2022

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Parameters

Parametric specs for Secure Authenticators
Crypto Engine Asymmetric
End Equipment Asset Tracking
Battery ID and Authentication
Identification and Calibration
Medical Consumable ID
Medical Sensor Authentication and Calibration
Secure Authentication of Accessories and Peripherals
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 3Kbit
Oper. Temp. (°C) -40 to +85
Package/Pins ULTRA THIN WLP/4
Budgetary
Price (See Notes)
0.66

Key Features

  • Robust Countermeasures Protect Against Security Attacks
    • All Stored Data Cryptographically Protected from Discovery
  • ECC P-256 Secure Compute Engine
    • Preprogrammed and Write-Protected ECC P-256 Key Pair
    • FIPS 186-4 Compliant ECDSA for Strong Challenge/Response Authentication
    • ECDSA Authenticated R/W of Configurable Memory
  • SP800-90B TRNG Used for Secure ECDSA Nonces
  • Supplemental Features Enable Easy Integration into End Applications
    • 17-Bit, One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
    • 3Kb of Secure EEPROM for User Data, Keys, Certificate, and Secure Counter
    • Unique and Unalterable Factory-Programmed, 64-Bit Identification Number (ROM ID)
    • Authenticity Verification with ECDSA Using Preprogrammed Maxim Certificate
    • Advanced 1-Wire Protocol Minimizes Interface to Single Contact
    • Full-Time Overdrive Communication Speed
    • Operating Range: -40°C to +85°C, 1.62V to 5V
    • 4-Bump WLP
    • 3.5μA (typ) Input Load Current
    • High ESD Immunity of 1-Wire Pin: ±8kV Human Body Model (HBM), typ

Applications/Uses

  • Accessory and Peripheral Secure Authentication
  • Battery Authentication and Charge Cycle Tracking
  • Medical Tools/Accessories Authentication and Calibration

Description

The DS28E30 provides a highly secure and easily deployed turnkey authentication solution based on the FIPS-186 ECDSA standard. The secure authenticator combines ECDSA challenge and response authentication with secured EEPROM for the storage of the keys and user data.

The device provides a core set of cryptographic tools derived from integrated blocks including an asymmetric hardware engine, a true random number generator (TRNG), 3Kb of secure EEPROM, a decrement-only counter, and a unique 64-bit ROM identification number (ROM ID). The ECC public/private key capabilities operate from the NIST-defined P-256 curve to provide a FIPS 186-compliant ECDSA signature generation function to support a bidirectional asymmetric key authentication model. The unique ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application. In addition, authenticity of the chip can be verified with a Maxim-provided public key certificate. The device communicates over the single-contact 1-Wire® bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as a node address in the case of a multidevice 1-Wire network.

Simplified Block Diagram

DS28E30: Functional Diagram DS28E30: Functional Diagram Zoom icon

Technical Docs

Data Sheet 1-Wire ECDSA Secure Authenticator Feb 03, 2022

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 .