Request Security User Guide and Developer Software EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. DS28C39 DeepCover Secure ECDSA Bidirectional Authenticator with ChipDNA PUF Protection General Description Benefits and Features The DS28C39 is an ECDSA public-key-based bidirectional Robust Countermeasures Protect Against Security secure authenticator that incorporates Maxims patented Attacks ChipDNA feature, a physically unclonable function Patented Physically Unclonable Function Secures (PUF) to provide a cost-effective solution with the ultimate Device Data protection against security attacks. Using the random vari- Actively Monitored Die Shield Detects and Reacts to Intrusion Attempts ation of semiconductor device characteristics that naturally occur during wafer fabrication, the ChipDNA circuit gener- All Stored Data Cryptographically Protected from Discovery ates a unique output value that is repeatable over time, temperature, and operating voltage. Attempts to probe or ECDSA Authenticated R/W of Stored Data and observe ChipDNA operation modifies the underlying circuit Counter characteristics, preventing discovery of the unique value Efficient Public-Key Authentication Solution to used by the chip cryptographic functions. The DS28C39 Authenticate Peripherals utilizes the ChipDNA output as key content to cryptograph- FIPS 186-Compliant ECDSA P256 Signature for ically secure all device stored data and as the private key Challenge/Response Authentication for the ECDSA signing operation. With ChipDNA capabil- ChipDNA Generated Public/Private Key Pair. ity, the device provides a core set of cryptographic tools TRNG with NIST SP 800-90B Compliant Entropy derived from integrated blocks including an asymmetric Source (ECC-P256) hardware engine, a FIPS/NIST-compliant Supplemental Features Enable Easy Integration into true random number generator (TRNG), 2Kb of secured End Applications EEPROM, a decrement-only counter and a unique 64-bit 17-Bit One-Time Settable, Nonvolatile Decrement- ROM identification number (ROM ID). The ECC public/ pri- Only Counter with Authenticated Read vate key capabilities operate from the NIST-defined P-256 2Kb of EEPROM for User Data, Key, Control curve to provide a FIPS 186-compliant ECDSA signature Registers, and Certificate generation function. The unique ROM ID is used as a Unique and Unalterable Factory Programmed fundamental input parameter for cryptographic operations 64-Bit Identification Number (ROM ID) and serves as an electronic serial number within the appli- 2 2 I C Communication: Up to 200kHz cation. Lastly, the DS28C39 supports I C communication Operating Range: 3.3V 10%, -40C to +85C at the 100kHz standard mode. 6-Pin TDFN-EP Package (3mm x 3mm) Applications Authentication of Medical Sensors and Tools Secure Management of Limited Use Consumables Ordering Information appears at end of data sheet. IoT Node Authentication Peripheral Authentication Reference Design License Management DeepCover is a registered trademark and ChipDNA is a trademark of Maxim Integrated Products, Inc. Printer Cartridge Identification and Authentication 19-100700 Rev 0 11/19DS28C39 DeepCover Secure ECDSA Bidirectional Authenticator with ChipDNA PUF Protection Typical Application Circuit V CC V V CC CC VCC V CC IO SDA PIOA SCL PIOB IO Rp V CC DS2476 C 1 DS28C39 C 2 I C SDA PORT SCL GND GND Maxim Integrated 2 www.maximintegrated.com