Coprocessor delivers authentication and physical security

Posted By : Mick Elliott
Coprocessor delivers authentication and physical security

A secure coprocessor from Maxim Integrated that provides additional levels of authentication and device integrity protection for industrial systems, medical sensors, and Internet of Things (IoT) tools is in stock at distributor Mouser Electronics.

The DS2477 DeepCover coprocessor has built-in 1-Wire master that combines FIPS202-compliant secure hash algorithm (SHA-3) challenge and response authentication with Maxim’s patented ChipDNA feature to provide a cost-effective solution with the ultimate protection against security attacks.

The device utilises the ChipDNA output as key content to cryptographically secure all device-stored data.

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.

The ChipDNA circuit, a physically unclonable technology, uses a random variation of semiconductor device characteristics that naturally occur during wafer fabrication.

It generates a unique output value that is repeatable over time, temperature, and operating voltage, and provides a core set of cryptographic tools derived from integrated blocks.

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