Mouser Electronics is now stocking up DS28E84 and DS28E39 DeepCover authenticators from Maxim Integrated. These secure authenticators will allow engineers to bring-in an additional layer of security to applications like medical sensors, secure peripherals, device management, and IoT (Internet of Things) nodes.
Fig. 1: Image Showing LPR-Integrated Maxim’s DS28E84
The two type of authenticators that are being discussed here will help engineers design medical devices less vulnerable to invasive attacks. These devices offers a basic set of cryptographic tools extracted from integrated blocks like a FIPS-compliant true random number generator, one decrement-only counter, as well as asymmetric ECC-P256 hardware engine. The list of devices also include onboard nonvolatile memory. These provide an unmatched 64-bit ROM identification number. This number will be employed as a fundamental input parameter for cryptographic operations as well as electronic serial number inside the application.
It is an Elliptic Curve Digital Signature Algorithm (ECDSA) public key-based secure authenticator loaded with Maxim’s patented ChipDNA™ PUF (Physically Unclonable Function) technology. Underlying circuit characteristics are modified through repeated close observation of ChipDNA. This prevents discovery of any unmatched value used by chip cryptographic functions.
This one is a radiation-resistant secure authenticator specifically meant for medical devices. The high radiation exposure used for sterilization processes can easily damage and disrupt the ideal NVM (Non Volatile Memory) used in auto identification, calibration, and manufacturing data by medical devices. It also features a high radiation resistance that goes as high as 50 kilograys permitting user-programmable calibration as well as manufacturing data prior medical sterilization. This keeps the medical device secure against unauthorized reuse strengthening the safety line for patient.
Both DS28E84 and DS28E39 interact over single-contact 1-Wire bus at both overdrive and standard speeds permitting simple integration inside designs. This communication adheres to 1-Wire protocol with ROM ID behaving as node address with respect to multi-device 1-Wire network.