General Description
The MAX66250 secure authenticator combines FIPS 202-compliant Secure Hash Algorithm (SHA-3) challengeand response authentication with secured EEPROM.
The device provides a core set of cryptographic tools derived from integrated blocks including a SHA-3 engine, 256 bits of secured user 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 device communicates over an RF interface compliant with ISO/IEC 15693.

Benefits and Features
●Robust Countermeasures Protect against SecurityAttacks
•All Stored Data Cryptographically Protected fromDiscovery
●Efficient Secure Hash Algorithm to AuthenticatePeripherals
•FIPS 202-Compliant SHA-3 Algorithm forChallenge/Response Authentication
•FIPS 198-Compliant Keyed-Hash MessageAuthentication Code (HMAC)
●Supplemental Features Enable Easy Integration intoEnd Applications
•17-Bit One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
•Secure Storage for Secrets
•256 Bits of Secure EEPROM for User Data
•ISO/IEC 15693: up to 52.97kbps
•Unique and Unalterable Factory-Programmed64-Bit Identification Number (ROM ID) withCorresponding UID per ISO/IEC 15693

Applications
●Medical Tools/Accessories Authentication andCalibration
●Printer Cartridge Configuration and Monitoring
●System Intellectual Property Protection
●NFC-Enabled Embedded Systems
●Asset Tracking
●Access Control
●Driver Identification
●E-Cash