IC provides strong public-key authentication

The DS28E35 DeepCover Secure Authenticator highly secure cryptographic IC features a FIPS 186-based, elliptic curve digital signature algorithm (ECDSA) engine to implement asymmetric (public-key) cryptography for a challenge-and-response authentication protocol between a host controller and attached peripherals, sensors, or modules. The chip uses a 1-Wire interface.

The chip operates with a key pair : a public key that resides with the host and an associated private key stored in the DS28E35. DeepCover technologies include advanced layout techniques, proprietary private key protection, and circuits that actively monitor for tampering. The IC operates from -40° to +85°C, comes in a 6-pin TSOC or 8-pin TDFN-EP package, and starts at $1.08 ea/1,000.