DS28E39
Description
The DS28E39 is an ECDSA public-key-based bidirectional secure authenticator that incorporates Maxim’s patented Chip DNA™ feature
, a physically unclonable function (PUF) to provide a cost-effective solution with the ultimate protection against security attacks. Using the random variation of semiconductor device characteristics that naturally occur during wafer fabrication, the Chip DNA circuit generates a unique output value that is repeatable over time, temperature, and operating voltage. Attempts to probe or observe Chip DNA operation modifies the underlying circuit characteristics, preventing discovery of the unique value used by the chip cryptographic functions. The DS28E39 utilizes the Chip DNA output as key content to cryptographically secure all device stored data and optionally, under user control, as the private key for the ECDSA signing operation. With Chip DNA capability, the device provides a core set of cryptographic tools derived from integrated blocks including an...
