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DeepCover Secure ECDSA Bidirectional Authenticator with ChipDNA PUF Protection

Protect Your Design Using Crypto-Strong Authentication Secured with a Physically Unclonable Function

Product Details

Key Features

Applications/Uses

Parametric specs for Secure Authenticators
Crypto Engine Asymmetric
End Equipment IP Protection
Medical Consumable ID
Medical Sensor Authentication and Calibration
PCB ID and Authentication
Print Cartridge Authentication
Printer Cartridge Configuration and Monitoring
Rack Card Security
Bus Type I2C
Memory Type EEPROM
Memory Size 2K x 1
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 Asymmetric
End Equipment IP Protection
Medical Consumable ID
Medical Sensor Authentication and Calibration
PCB ID and Authentication
Print Cartridge Authentication
Printer Cartridge Configuration and Monitoring
Rack Card Security
Bus Type I2C
Memory Type EEPROM
Memory Size 2K x 1
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/6
Budgetary
Price (See Notes)
1.02

Key Features

  • Robust Countermeasures Protect Against Security Attacks
    • Patented Physically Unclonable Function Secures Device Data
    • Actively Monitored Die Shield Detects and Reacts to Intrusion Attempts
    • All Stored Data Cryptographically Protected from Discovery
  • ECDSA Authenticated R/W of Stored Data and Counter
  • Efficient Public-Key Authentication Solution to Authenticate Peripherals
    • FIPS 186-Compliant ECDSA P256 Signature for Challenge/Response Authentication
    • ChipDNA Generated Public/Private Key Pair.
    • TRNG with NIST SP 800-90B Compliant Entropy Source
  • Supplemental Features Enable Easy Integration into End Applications
    • 17-Bit One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
    • 2Kb of EEPROM for User Data, Key, Control Registers, and Certificate
    • Unique and Unalterable Factory Programmed 64-Bit Identification Number (ROM ID)
    • I2C Communication: Up to 200kHz
    • Operating Range: 3.3V ±10%, -40°C to +85°C
    • 6-Pin TDFN-EP Package (3mm x 3mm)

Applications/Uses

  • Authentication of Medical Sensors and Tools
  • Secure Management of Limited Use Consumables
  • IoT Node Authentication
  • Peripheral Authentication
  • Reference Design License Management
  • Printer Cartridge Identification and Authentication

Description

The DS28C39 is an ECDSA public-key-based bidirectional secure authenticator that incorporates Maxim’s patented ChipDNA™ feature, a physically unclonable function (PUF) to provide a cost-effective solution with the ultimate protection against security attacks. Using the random variation of semiconductor device characteristics that naturally occur during wafer fabrication, the ChipDNA circuit generates a unique output value that is repeatable over time, temperature, and operating voltage. Attempts to probe or observe ChipDNA operation modifies the underlying circuit characteristics, preventing discovery of the unique value used by the chip cryptographic functions. The DS28C39 utilizes the ChipDNA output as key content to cryptographically secure all device stored data and as the private key for the ECDSA signing operation. With ChipDNA capability, the device provides a core set of cryptographic tools derived from integrated blocks including an asymmetric (ECC-P256) hardware engine, a FIPS/NIST-compliant true random number generator (TRNG), 2Kb of secured 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. The unique ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application. Lastly, the DS28C39 supports I2C communication at the 100kHz standard mode.

Simplified Block Diagram

DS28C39: Typical Application Circuit DS28C39: 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 .