DeepCover I2C Secure SHA-3 Authenticator with ChipDNA PUF Protection

Protect Your Development Investment with Crypto-Strong Authentication and Advanced Physical Security



The DS28C50 secure authenticator combines FIPS202-compliant secure hash algorithm (SHA-3) challenge and response authentication with Maxim’s patented ChipDNA™ technology, a physically unclonable function (PUF) to provide a cost-effective solution with the ultimate protection against security attacks. The ChipDNA implementation utilizes 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, thus preventing discovery of the unique value used by the chip cryptographic functions. The DS28C50 utilizes the ChipDNA output as key content to cryptographically secure all device-stored data. With ChipDNA capability, the device provides a core set of cryptographic tools derived from integrated blocks including a SHA-3 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 unique ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application. The DS28C50 communicates over a I²C network.


  • 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
  • Efficient Secure Hash Algorithm Authenticates Peripherals
    • FIPS 202-Compliant SHA-3 Algorithm for Challenge/Response Authentication
    • FIPS 198-Compliant Keyed-Hash Message Authentication Code (HMAC)
    • 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
    • One GPIO Pin with Optional Authentication Control
    • 2Kb of EEPROM for User Data, Key, and Control Registers
    • Unique and Unalterable Factory Programmed 64-Bit Identification Number (ROM ID)
    • Operating Range: 3.3V ±10%, -40°C to +85°C
    • 6-Pin TDFN-EP Package (3mm x 3mm)
    • I2C Communication, up to 1MHz


  • アクセサリおよび周辺装置のセキュア認証
  • 医療用センサーおよび器具の認証
  • IoTノード暗号保護
  • プリンタカートリッジの識別および認証
  • 使用に制限のある消耗品の安全な管理
Part NumberCrypto EngineApplicationsMemory TypeMemory SizeBus TypeVSUPPLY
Deep CoverOper. Temp.
See Notes
DS28C50 NEW!Symmetric
Access Control
Asset Tracking
IP Protection
Identification Systems
Medical Sensor Authentication and Calibration
PCB ID and Authentication
Print Cartridge Authentication
Printer Cartridge Configuration and Monitoring
Rack Card Security
Secure Access Control
Secure Authentication of Accessories and Peripherals
EEPROM2K x 1I2C2.97 to 3.63Yes-40 to +85
$0.94 @1k
全Secure Authenticators (31)


信頼性レポートをリクエスト: DS28c50 
デバイス   ウェハープロセス   プロセス技術   サンプルサイズ   不合格   FIT (25°C)   FIT (55°C)  

注: 不良率はプロセス技術ごとにまとめられ、関連する型番にマッピングされます。 不良率はテストされたユニット数に大きく依存します。

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DeepCover® I2CセキュアSHA-3認証用IC、ChipDNA PUF保護内蔵

  • 堅牢な対策によってセキュリティ攻撃に対する保護を提供
  • 効率的なセキュアハッシュアルゴリズムによってペリフェラルを認証
  • 補助機能によって最終アプリケーションへの容易な統合を実現

DeepCover I2C Secure SHA-3 Authenticator with ChipDNA PUF Protection

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


  • ECC-P256演算エンジン
  • SHA-256演算エンジン
  • ECDHで確立された鍵を使用する設定可能メモリのSHA-256ワンタイムパッド暗号化R/W