DS28C40

Deep Cover Automotive I²C Authenticator

Ensure Vehicle Safety and Reliability by Authenticating Automotive Components


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Description

The DS28C40 is a secure authenticator that provides a core set of cryptographic tools derived from integrated asymmetric (ECC-P256) and symmetric (SHA-256) security functions. In addition to the security services provided by the hardware implemented crypto engines, the device integrates a FIPS/NIST true random number generator (TRNG), 6kb of one-time programmable (OTP) memory for user data, keys and certificates, one configurable GPIO, and a unique 64-bit ROM identification number (ROM ID).

The ECC public/private key capabilities operate from the NIST defined P-256 curve and include FIPS 186-4 compliant ECDSA signature generation and verification to support a bidirectional asymmetric key authentication model. The SHA-256 secret-key capabilities are compliant with FIPS 180 and are flexibly used either in conjunction with ECDSA operations or independently for multiple HMAC functions.

The GPIO pin can be operated under command control and include configurability supporting authenticated and nonauthenticated operation including an ECDSA-based crypto-robust mode to support secure boot of a host processor.

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced security to provide the most secure key storage possible. To protect against device-level security attacks, invasive and noninvasive countermeasures are implemented including active die shield, encrypted storage of keys, and algorithmic methods.
DS28C40: Simplified Block Diagram DS28C40: Simplified Block Diagram Enlarge+

Key Features

  • ECC-P256 Compute Engine
    • FIPS 186 ECDSA P256 Signature Generation and Verification
    • ECDH Key Exchange for Session Key Establishment
    • ECDSA Authenticated R/W of Configurable Memory
  • SHA-256 Compute Engine
    • FIPS 198 HMAC for Bidirectional Authentication
  • SHA-256 One-Time Pad Encrypted R/W of Configurable Memory Using an ECDH Established Key
  • One GPIO Pin with Optional Authentication Control
    • Open-Drain, 4mA/0.4V
    • Optional SHA-256 or ECDSA Authenticated On/Off and State Read
    • Optional ECDSA Certificate Verification to Set On/Off after Multiblock Hash for Secure Boot
  • TRNG with NIST SP 800-90B Compliant Entropy Source with Function to Read Out
  • Optional Chip Generated Private/Public (Pr/Pu) Key Pairs for ECC Operations
  • 6Kb of One-Time Programmable (OTP) for User Data, Keys, and Certificates
  • Unique and Unalterable Factory Programmed 64-BitIdentification Number (ROM ID)
    • Optional Input Data Component to Crypto and Key Operations
  • I²C Communication Up to 1MHz
  • 3.3V ±10%, -40°C to +125°C Operating Range
  • 10-Pin, 3mm x 4mm TDFN Package
  • AEC-Q100 Grade 1

Applications/Uses

  • Automotive Secure Authentication
  • Identification and Calibration Automotive Parts/Tools/Accessories
  • IoT Node Crypto-Protection
  • Secure Authentication of Accessories and Peripherals
  • Secure Boot or Download of Firmware and/or System Parameters
  • Secure Storage of Cryptographic Keys for a Host Controller

DS28C40EVKIT: Evaluation System for the DS28C40

Technical Documents

User Guide 6856 DS28C40 Security User Guide

Quality and Environmental Data

Request Reliability Report for: DS28C40 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources


DS28C40
Deep Cover Automotive I²C Authenticator

  • ECC-P256 Compute Engine
  • SHA-256 Compute Engine
  • SHA-256 One-Time Pad Encrypted R/W of Configurable Memory Using an ECDH Established Key

DS28E16
1-Wire SHA-3 Secure Authenticator

  • Robust Countermeasures Protect Against Security Attacks
  • Efficient Secure Hash Algorithm Authenticates Peripherals
  • Supplemental Features Enable Easy Integration into End Applications

DS28E84
DeepCover Radiation Resistant, High-Capacity 1-Wire Secure Authenticator

  • High Radiation Resistance Allows User-Programmable Manufacturing or Calibration Data Before Medical Sterilization
  • ECC-P256 Compute Engine
  • SHA-256 Compute Engine

DS28E39
DeepCover Secure ECDSA Bidirectional Authenticator with ChipDNA PUF Protection

  • Robust Countermeasures Protect Against Security Attacks
  • ECDSA Authenticated R/W of Stored Data and Counter
  • Efficient Public-Key Authentication Solution to Authenticate Peripherals

DS2477
DeepCover Secure SHA-3 Coprocessor with ChipDNA PUF Protection

  • Robust Countermeasures Protect Against Security Attacks
  • Efficient Secure Hash Algorithm Authenticates and Manages Peripherals
  • Supplemental Features Enable Easy Integration into End Applications

Type ID PDF Title
User Guide 6856 DS28C40 Security User Guide

Electronics in Vehicles (ELIV) 2019
10/16/2019 - 10/17/2019, Bonn, Germany
The international VDI Congress ELIV (Electronics In Vehicles) is THE event for all experts in the field of electrical and electronical car engineering and integration of mechanical and electronical systems.

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