DS2476

DeepCover Secure Coprocessor

Provides Affordable Elliptic-Curve Public-Key Authentication Security to Protect Your Development Investment


Please check latest availability status for a specific part variant.

Description

The DS2476 is a secure ECDSA and HMAC SHA-256 coprocessor companion to the DS28C36. The coprocessor can compute any required HMACs or ECDSA signatures to do any operation on the DS28C36. The DS2476 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 (RNG), 8Kb of secured EEPROM, a decrement-only counter, two pins of 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 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.

Two GPIO pins can be independently 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. This secure boot method can also be used to enable the coprocessor functions.

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.
DS2476: Typical Application Circuit DS2476: Typical Application Circuit Enlarge+

Key Features

  • ECC-256 Compute Engine
    • FIPS 186 ECDSA P256 Signature and Verification
    • ECDH Key Exchange with Authentication Prevents Man-in-the-Middle Attacks
    • ECDSA Authenticated R/W of Configurable Memory
  • FIPS 180 SHA-256 Compute Engine
    • HMAC
  • SHA-256 OTP (One-Time Pad) Encrypted R/W of Configurable Memory Through ECDH Established Key
  • Two GPIO Pins with Optional Authentication Control
    • Open-Drain, 4mA/0.4V
    • Optional SHA-256 or ECDSA Authenticated On/Off and State Read
    • Optional ECDSA Certificate to Set On/Off after Multiblock Hash for Secure Boot
  • RNG with NIST SP 800-90B Compliant Entropy Source with Function to Read Out
  • Optional Chip Generated Pr/Pu Key Pairs for ECC Operations
  • 17-Bit One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
  • 8Kbits of EEPROM for User Data, Keys, and Certificates
  • Unique and Unalterable Factory Programmed 64-Bit Identification Number (ROM ID)
    • Optional Input Data Component to Crypto and Key Operations
  • I²C Communication, 100kHz and 400kHz
  • Operating Range: 3.3V ±10%, -40°C to +85°C
  • 6-Pin TDFN Package

Applications/Uses

  • Accessory and Peripheral Secure Authentication
  • Controller
  • IoT Node Crypto-Protection
  • Parameters
  • Secure Boot or Download of Firmware and/or System
  • Secure Storage of Cryptographic Keys for a Host
Part NumberCrypto EngineApplicationsMemory TypeMemory SizeBus TypeVSUPPLY
(V)
Deep CoverOper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
DS2476 Asymmetric
Companion Coprocessor
IP Protection
Medical Consumable ID
Medical Sensor Authentication and Calibration
PCB ID and Authentication
Print Cartridge Authentication
Printer Cartridge Configuration and Monitoring
Secure Access Control
EEPROM4K x 1I2C2.97 to 3.63Yes-40 to +85
TDFN-EP/6
$1.08 @1k
See All Secure Authenticators (28)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


DS28C36EVKIT: Evaluation Kit for the DS28C36 and DS2476
DS28E36: DeepCover Secure Authenticator
DS28E36EVKIT: Evaluation Kit for the DS28E36/DS2476
DS28E83EVKIT: Evaluation Kit for the DS28E83/DS2476

CAD Symbols and Footprints

  • DS2476Q+T
  • DS2476Q+U
  • 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.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


    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

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    • High Radiation Resistance Allows User-Programmable Manufacturing or Calibration Data Before Medical Sterilization
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    • 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


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