Chip combines secure hash algorithm and PUF to protect IoT, industrial and medical

“It is a secure I2C co-processor with built-in 1-Wire master that combines FIPS202-compliant secure hash algorithm [SHA-3] challenge and response authentication with Maxim’s ChipDNA feature to provide protection against security attacks,” said Mouser, which is stocking the part.

ChipDNA is Maxin’s brand for its ‘physically uncloneable function’ (PUF) – which uses random fabrication variation to produce an on-chip key that is repeatable over time, temperature and rail voltage.

“Attempts to probe or observe ChipDNA operation modifies the underlying circuit characteristics, which prevents discovery of the unique value used by the chip cryptographic functions,” said Mouser.

An actively-monitored die shield is said to detects and react to intrusion attempts, and there is a unique and unalterable factory programmed
64bit ID number.

Features:

• FIPS 202-compliant SHA-3 algorithm for bidirectional authentication
• FIPS 198-compliant keyed-hash message authentication code (HMAC)
• TRNG with NIST SP 800-90B compliant entropy source

I2C communication is available up to 1MHz.

Operation is over 2.2V to 3.63V and -40°C to +85°C, and the package is a 3 x 3mm 6pin TDFN-EP.