Authenticator secures IoT nodes

Public-key and secret-key crypto functions add a level of IP and device integrity to industrial, medical, and IoT products, says Maxim Integrated, as it unveils the DS28C36 DeepCover secure authenticator.

It provides a targeted set of asymmetric-key and symmetric-key cryptographic tools in a compact package. Asymmetric public-key features are supported with the P256 based elliptic curve cryptography (ECC) algorithm and symmetric secret-key with SHA-256. It monitors or limits peripheral usage with authenticated EEPROM settings and a 17bit decrement-only counter

Two authenticated GPIO pins have optional secure state control and level sensing as well as the ability to enhance secure download/boot features. There are also countermeasures to protect against invasive and non-invasive security attacks.

It safeguards critical system data by only making accessible stored sensitive data through encrypted R/W with a key established through a Diffie-Hellman (ECDH) based protocol.

End applications include bi-directional authentication, secure storage of system data (such as system crypto keys), verification of system-critical data, secure boot, and end product usage control. For applications where the host system microcontroller has insufficient computing resources for ECC algorithms or lacks required secure storage for a SHA-256 symmetric key, the companion DS2476 co-processor, can be used.

The authenticator is offered in a 3.0 x 3.0mm TDFN package, and operates from -40 to +85 degrees C.

http://www.maximintegrated.com

Comments

    Leave a Reply

    You must be logged in to post a comment.

    Latest News from Softei

    This news story is brought to you by softei.com, 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 yourself informed on the latest technology news and new products from around the globe. Simply click this link to register here: Softei Registration