Maxim claims authenticator IC is first with SHA3-256 cryptographic engine

The SHA3-256 authentication IC and ChipDNA physically unclonable function (PUF) technology are combined in the DS28E50 DeepCover secure hash algorithm 3 (SHA3-256) authenticator IC from Maxim Integrated Products. By virtue of the SHA3-256, the DS28E50 delivers technology for challenge-and-response authentication, providing the strongest defence against counterfeiting, unauthorised use and other application problems in a secure IC, claims Maxim. It is also practical for teams with limited, or no, cryptography expertise, adds the company.

The DS28E50 provides embedded system developers with advanced ability to prevent counterfeiting, aftermarket cloning and unauthorised use of smart, connected industrial, medical and consumer devices. It is believed to provide the industry’s first SHA3-256 authentication IC, and integrates Maxim’s patented ChipDNA PUF technology to prevent the IC-level attacks that are routinely attempted on security ICs. ChipDNA technology is derived from the naturally occurring random analogue characteristics of fundamental MOSFET devices. It uses secret keys that protect all stored data. The keys are generated only when needed and are never stored on the chip.

The IC includes secured EEPROM for end-application data with multiple configurable and irreversible memory-protection modes. No device-level firmware development is required, although firmware is needed for the host-side microcontroller. A factory programming service is available for simplified secure key management.

The DS28E50 IC requires just 3.3V and operates from -40 to +85 degrees C. It includes ±8kV human-body model (HBM) electrostatic discharge (ESD) protection, and is housed in a six-pin, 3.0 x 3.0mm TDFN package.

The DS28E50 is available now direct from Maxim and its authorised distributors. An evaluation kit, the DS28E50EVKIT# is also available.

This news story is brought to you by, the specialist site dedicated to delivering information about what’s new in the electronics industry, with daily news updates, new products and industry news.

To stay up-to-date, register to receive our weekly newsletters and keep informed of the latest technology news and new products from around the globe. Simply click this link to register here:

Readers can also register to receive the monthly newsletter from our sister site, This is the only website dedicated to developers of wearable electronic products. Simply click this link to register: