DS28E35
Info: : PRODUCTION
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DS28E35

DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM

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

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.37
Features
  • ECDSA Engine for Public-Key Signature Using a Defined SEC Domain Parameter Set
  • On-Chip Hardware Random Number Generator
  • Private and Public Key Can Be Computed by the Device or Loaded from Outside with Optional Automatic Locking
  • Separate User-Programmable and Lockable Memory Space to Store a Public-Key Certificate
  • 17-Bit One-Time Settable, Nonvolatile Decrement-On-Command Counter
  • SHA-256 Engine to Compute a Hash of EEPROM Page Data and Host Challenge for Subsequent ECDSA Signing
  • 1024 Bit of User EEPROM Organized as Four Pages of 256 Bits
  • Programmable and Irreversible User EEPROM Protection Modes Including Write Protection, Read Protection, and OTP/EPROM Emulation for Individual Memory Pages
  • Unique Factory-Programmed 64-Bit Identification Number
  • Single-Contact 1-Wire Interface Communicates with Host at Up to 76.9kbps
  • Operating Range: 3.3V ±10%, -40°C to +85°C
  • ±8kV HBM ESD Protection (typ) for IO Pin
  • 8-Pin TDFN and 6-Pin TSOC Packages
Additional Details
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DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.
The DeepCover Secure Authenticator (DS28E35) provides a highly secure solution for a host controller to authenticate peripherals based on the industry standard (FIPS 186) public-key based Elliptic Curve Digital Signature Algorithm (ECDSA). The ECDSA engine computes keys and signatures using a pseudorandom curve over a prime field according to the “Standards for Efficient Cryptography (SEC)”. The private and public key can be computed by the device or installed by the user and optionally locked. Separate memory space is set aside to store and lock a public-key certificate as it is needed to verify authenticity. In addition to ECDSA-related memory, the device has 1024 bits of user memory that is organized as four pages of 256 bits. Page protection modes include write protection, read protection, and one-time-programmable (OTP) memory emulation modes. The DS28E35 also features a one-time settable, nonvolatile 17-bit decrement-on-command counter, which can be used to keep track of the lifetime of the object to which the DS28E35 is attached. 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. The DS28E35 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 multi-device 1-Wire network.

Applications

  • Authentication of Consumables
  • Medical Sensors
  • Peripheral Authentication
  • Printer Cartridge Identification and Authentication
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Part Models 4
1ku List Price Starting From $1.37

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS28E35P+
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DS28E35P+T
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DS28E35Q+T
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DS28E35Q+U
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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

DS28E35EVKIT

Evaluation System for the DS28E35

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DS28E35EVKIT

Evaluation System for the DS28E35

Evaluation System for the DS28E35

Features and Benefits

  • Demonstrates the Features of the DS28E35 DeepCover 1-Wire ECDSA Authenticator with 1Kb User EEPROM
  • Demonstrates the Features of the DS2475 DeepCover ECDSA Coprocessor with 1-Wire Master
  • I2C and 1-Wire Sequences Are Logged to Aid Firmware Designers’ Understanding of DS2475 and DS28E35
  • 1-Wire USB Adapter Creates a Virtual COM Port on Any PC
  • Fully Compliant with USB Specification v2.0
  • Software Runs on Windows 8, Windows 7, Windows Vista, and Windows XP, 32-bit and 64-bit Versions
  • 3.3V ±3% 1-Wire Operating Voltage
  • Convenient On-Board Test Points, TSOC, and TO-92 Sockets
  • Evaluation Software Available by Request

Product Detail

The DS28E35 evaluation system (EV system) provides the hardware and software necessary to exercise the features of the DS28E35 and DS2475. The EV system consists of a five DS28E35 devices in a 6-pin TSOC package, a DS9120PA evaluation TSOC socket board, DS28E35 plug-in module, and a DS28E35+ USB-to-1-Wire® adapter. The evaluation software runs under Windows® 8, Windows 7, Windows Vista®, and Windows XP® operating systems, both 32-bit and 64-bit versions. It provides a handy user interface to exercise the features of the DS28E35 and DS2475.

Tools & Simulations

Tools & Simulations 1

Reference Designs

Reference Designs 1

MAXREFDES44

Secure Authentication Design with 1-Wire ECDSA and Xilinx Zynq SoC

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MAXREFDES44

Secure Authentication Design with 1-Wire ECDSA and Xilinx Zynq SoC

Secure Authentication Design with 1-Wire ECDSA and Xilinx Zynq SoC

Features and Benefits

Features

  • ECDSA authentication
  • 1-Wire interface
  • Example source code
  • Pmod-compatible form factor

Competitive Advantages

  • Crypto-strong authentication
  • Fast performance with hardware acceleration
  • No VCC pin required for peripheral authentication
View Detailed Reference Design external link

Part Used 1

Design & Integration Tools

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ZIP

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