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Radiation-tolerant secure authenticator designed to withstand harsh environments
Medical device designers can protect surgical tool data from memory-disruptive, high-energy gamma radiation used in sterilization, while simultaneously providing tool security with capabilities such as secure tool use management and counterfeit prevention, with the DS28E83 DeepCover® secure authenticator from Maxim Integrated Products, Inc.
This is a product release announcement by Maxim Integrated Products, Inc.. The issuer is solely responsible for its content.
As the industry’s first secure authentication solution designed for gamma sterilization exposure, it enhances patient safety and includes both elliptic curve digital signature algorithm (ECDSA) and Secure Hash Algorithm-256 (SHA-256)-based cryptographic features. The 1-Wire® interface allows for simple integration into designs. Medical device manufacturers commonly sterilize limited-use surgical tools or sensors through a gamma or e-beam process. High radiation exposure used in either process can disrupt and damage the standard, non-volatile memory (NVM) that electronic medical devices use for auto identification, as well as calibration and manufacturing data. This can jeopardize medical device data and patient safety, both of which are of critical importance for medical device manufacturers. The DS28E83 secure authenticator integrates a radiation-tolerant NVM to prevent data loss during sterilization. With this capability, device designers can implement cost-affordable protection from unauthorized re-use and aftermarket device counterfeiting. By allowing electronic surgical instruments to undergo gamma or e-beam sterilization, the DS28E83 greatly enhances patient safety. Authentication is implemented through industry-standard and application-efficient elliptic-curve, public-key cryptography to protect patients against the risks associated with non-qualified counterfeit devices or incidental re-use. The IC, which is easy to integrate into a customer’s design using Maxim’s single-contact 1-Wire interface, is applicable for medical surgical tools and sensor applications. Key Advantages Enhanced Patient Safety: Robust NVM withstands radiation exposure of up to 75kGy (kiloGray) used in gamma and e-beam medical sterilization Device Counterfeiting, Overuse, and Security Breach Protection:
- ECDSA P256 asymmetric secure authentication
- SHA-256 hash-based message authentication code (HMAC) symmetric key secure authentication
- National Institute of Standards and Technology Special Publication (NIST SP) 800-90B compliant true random number generator for ECDSA signatures and HMAC operations
- One general-purpose input/output (GPIO) pin with selectable authentication control provides the option for a secure switch
- 10kb secured memory for keys, certificates, and user data
- Unique factory-programmed, read-only serial number for tool identification and cryptographic operations
- The DS28E83 is available at Maxim’s website for $1.22 (1000-up, FOB USA); also available with select authorized distributors
- DS28E83EVKIT# evaluation kit is available for $65
- Details about DS28E83: www.maximintegrated.com/products/DS28E83
- Hi-res image: http://bit.ly/DS28E83Image
- Block diagram: http://bit.ly/DS28E83Block
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